You should target the smallest, not the largest, supported pixel resolution by the devices your app can run on.
Say if there's an actual Mac computer that can run OS X 10.9 and has a native screen resolution of only 1280x720 then that's the resolution you should focus on. Any higher and your game won't correctly run on this device and you could as well remove that device from your supported devices list.
You can rely on upscaling to match larger screen sizes, but you can't rely on downscaling to preserve possibly important image details such as text or smaller game objects.
The next most important step is to pick a fitting aspect ratio, be it 4:3 or 16:9 or 16:10, that ideally is the native aspect ratio on most of the supported devices. Make sure your game only scales to fit on devices with a different aspect ratio.
You could scale to fill but then you must ensure that on all devices the cropped areas will not negatively impact gameplay or the use of the app in general (ie text or buttons outside the visible screen area). This will be harder to test as you'd actually have to have one of those devices or create a custom build that crops the view accordingly.
Alternatively you can design multiple versions of your game for specific and very common screen resolutions to provide the best game experience from 13" through 27" displays. Optimized designs for iMac (desktop) and a Macbook (notebook) devices make the most sense, it'll be harder to justify making optimized versions for 13" and 15" plus 21" and 27" screens.
But of course this depends a lot on the game. For example a tile-based world game could simply provide a larger viewing area onto the world on larger screen resolutions rather than scaling the view up. Provided that this does not alter gameplay, like giving the player an unfair advantage (specifically in multiplayer).
You should provide @2x images for the Retina Macbook Pro and future Retina Macs.
Yes, it is because you are using auto layout. Setting the view frame and resizing mask will not work.
You should read Working with Auto Layout Programmatically and Visual Format Language.
You will need to get the current constraints, add the text field, adjust the contraints for the text field, then add the correct constraints on the text field.
First get the size of screen.
Size size = MediaQuery.of(context).size;
After this you can get width
and multiply it with 0.5
to get 50% of screen width.
double width50 = size.width * 0.5;
But problem generally comes in height
, by default when we use
double screenHeight = size.height;
The height we get is global height which includes StatusBar
+ notch
+ AppBar
height. So, in order to get the left height of the device, we need to subtract padding
height (StatusBar
+ notch
) and AppBar
height from total height. Here is how we do it.
double abovePadding = MediaQuery.of(context).padding.top;
double appBarHeight = appBar.preferredSize.height;
double leftHeight = screenHeight - abovePadding - appBarHeight;
Now we can use following to get 50% of our screen in height.
double height50 = leftHeight * 0.5
let button: UIButton = UIButton()
button.setImage(UIImage(named:"imagename"), for: .normal)
button.addTarget(self, action:#selector(YourClassName.backAction(_sender:)), for: .touchUpInside)
button.frame = CGRect.init(x: 5, y: 100, width: 45, height: 45)
view.addSubview(button)
@objc public func backAction(_sender: UIButton) {
}
Updated 2018
Make sure your table includes the table
class. This is because Bootstrap 4 tables are "opt-in" so the table
class must be intentionally added to the table.
http://codeply.com/go/zJLXypKZxL
Bootstrap 3.x also had some CSS to reset the table cells so that they don't float..
table td[class*=col-], table th[class*=col-] {
position: static;
display: table-cell;
float: none;
}
I don't know why this isn't is Bootstrap 4 alpha, but it may be added back in the final release. Adding this CSS will help all columns to use the widths set in the thead
..
UPDATE (as of Bootstrap 4.0.0)
Now that Bootstrap 4 is flexbox, the table cells will not assume the correct width when adding col-*
. A workaround is to use the d-inline-block
class on the table cells to prevent the default display:flex of columns.
Another option in BS4 is to use the sizing utils classes for width...
<thead>
<tr>
<th class="w-25">25</th>
<th class="w-50">50</th>
<th class="w-25">25</th>
</tr>
</thead>
Lastly, you could use d-flex
on the table rows (tr), and the col-*
grid classes on the columns (th,td)...
<table class="table table-bordered">
<thead>
<tr class="d-flex">
<th class="col-3">25%</th>
<th class="col-3">25%</th>
<th class="col-6">50%</th>
</tr>
</thead>
<tbody>
<tr class="d-flex">
<td class="col-sm-3">..</td>
<td class="col-sm-3">..</td>
<td class="col-sm-6">..</td>
</tr>
</tbody>
</table>
Note: Changing the TR to display:flex can alter the borders
There are numerous Flexbox bugs in IE11 and other browsers - see flexbox on Can I Use -> Known Issues, where the following are listed under IE11:
display: flex
and flex-direction: column
will not properly calculate their flexed childrens' sizes if the container has min-height
but no explicit height
propertymin-height
is usedAlso see Philip Walton's Flexbugs list of issues and workarounds.
There is no rule to achieve that using CSS only, besides the object-fit
(that you are currently using), which has partial support in EDGE1 so if you want to use this in IE, you have to use a object-fit polyfill in case you want to use just the element img
, otherwise you have to do some workarounds.
You can see the the object-fit
support here
You can use a simple JS snippet to detect if the object-fit
is supported and then replace the img
for a svg
//ES6 version
if ('objectFit' in document.documentElement.style === false) {
document.addEventListener('DOMContentLoaded', () => {
document.querySelectorAll('img[data-object-fit]').forEach(image => {
(image.runtimeStyle || image.style).background = `url("${image.src}") no-repeat 50%/${image.currentStyle ? image.currentStyle['object-fit'] : image.getAttribute('data-object-fit')}`
image.src = `data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='${image.width}' height='${image.height}'%3E%3C/svg%3E`
})
})
}
//ES5 version transpiled from code above with BabelJS
if ('objectFit' in document.documentElement.style === false) {
document.addEventListener('DOMContentLoaded', function() {
document.querySelectorAll('img[data-object-fit]').forEach(function(image) {
(image.runtimeStyle || image.style).background = "url(\"".concat(image.src, "\") no-repeat 50%/").concat(image.currentStyle ? image.currentStyle['object-fit'] : image.getAttribute('data-object-fit'));
image.src = "data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='".concat(image.width, "' height='").concat(image.height, "'%3E%3C/svg%3E");
});
});
}
_x000D_
img {
display: inline-flex;
width: 175px;
height: 175px;
margin-right: 10px;
border: 1px solid red
}
[data-object-fit='cover'] {
object-fit: cover
}
[data-object-fit='contain'] {
object-fit: contain
}
_x000D_
<img data-object-fit='cover' src='//picsum.photos/1200/600' />
<img data-object-fit='contain' src='//picsum.photos/1200/600' />
<img src='//picsum.photos/1200/600' />
_x000D_
1 - EDGE has now partial support for object-fit
since version 16, and by partial, it means only works in img
element (future version 18 still has only partial support)
Google recently changed the terms of use of its Google Maps APIs; if you were already using them on a website (different from localhost) prior to June 22nd, 2016, nothing will change for you; otherwise, you will get the aforementioned issue and need an API key in order to fix your error. The free API key is valid up to 25,000 map loads per day.
In this article you will find everything you may need to know regarding the topic, including a tutorial to fix your error:
Google Maps API error: MissingKeyMapError [SOLVED]
Also, remember to replace YOUR_API_KEY with your actual API key!
Fileservice.cs
:
public class FileService : IFileService
{
private readonly IWebHostEnvironment env;
public FileService(IWebHostEnvironment env)
{
this.env = env;
}
public string Upload(IFormFile file)
{
var uploadDirecotroy = "uploads/";
var uploadPath = Path.Combine(env.WebRootPath, uploadDirecotroy);
if (!Directory.Exists(uploadPath))
Directory.CreateDirectory(uploadPath);
var fileName = Guid.NewGuid() + Path.GetExtension(file.FileName);
var filePath = Path.Combine(uploadPath, fileName);
using (var strem = File.Create(filePath))
{
file.CopyTo(strem);
}
return fileName;
}
}
IFileService
:
namespace studentapps.Services
{
public interface IFileService
{
string Upload(IFormFile file);
}
}
StudentController
:
[HttpGet]
public IActionResult Create()
{
var student = new StudentCreateVM();
student.Colleges = dbContext.Colleges.ToList();
return View(student);
}
[HttpPost]
public IActionResult Create([FromForm] StudentCreateVM vm)
{
Student student = new Student()
{
DisplayImage = vm.DisplayImage.FileName,
Name = vm.Name,
Roll_no = vm.Roll_no,
CollegeId = vm.SelectedCollegeId,
};
if (ModelState.IsValid)
{
var fileName = fileService.Upload(vm.DisplayImage);
student.DisplayImage = fileName;
getpath = fileName;
dbContext.Add(student);
dbContext.SaveChanges();
TempData["message"] = "Successfully Added";
}
return RedirectToAction("Index");
}
for me the "workaround" solution was to remove the "_normal" from the end of the string
Check it out below:
I want columns One and Two to shrink/grow to fit rather than being fixed.
Have you tried: flex-basis: auto
or this:
flex: 1 1 auto
, which is short for:
flex-grow: 1
(grow proportionally)flex-shrink: 1
(shrink proportionally)flex-basis: auto
(initial size based on content size)or this:
main > section:first-child {
flex: 1 1 auto;
overflow-y: auto;
}
main > section:nth-child(2) {
flex: 1 1 auto;
overflow-y: auto;
}
main > section:last-child {
flex: 20 1 auto;
display: flex;
flex-direction: column;
}
Related:
It's also possible to use AlamofireImage (https://github.com/Alamofire/AlamofireImage)
let size = CGSize(width: 30.0, height: 30.0)
let aspectScaledToFitImage = image.af_imageAspectScaled(toFit: size)
The function in the previous post gave me a blurry result.
I found a link where we can generate our own white icon,
try this link to generate white icon of your launcher icon.
Open this Link and upload your ic_launcher or notification icon
Here is my example of how to change the arrows for Slick Carousel in React to anything you would like. First you need to set the nextArrow and prevArrow in settings to a function then return a div in that function with whatever icon you would like to use. For mine I used Font Awesome. Then you will need to add a className in your icon, you will see that in the NextArrow and PrevArrow functions. Then add the scss code to customize whatever you would like.
JSX Code:
function NextArrow(props) {
const { style, onClick } = props;
return (
<div style={{ ...style, display: "block" }} onClick={onClick}>
<FontAwesomeIcon icon={faChevronRight} size="3x" className="slick-arrow-icon-right" />
</div>
);
}
function PrevArrow(props) {
const { style, onClick } = props;
return (
<div style={{ ...style, display: "block" }} onClick={onClick}>
<FontAwesomeIcon icon={faChevronLeft} size="3x" className="slick-arrow-icon-left" />
</div>
);
}
function SlickCarouselArrowChange(props) {
var settings = {
className: "slider variable-width",
dots: true,
infinite: true,
centerMode: true,
slidesToShow: 1,
slidesToScroll: 1,
variableWidth: true,
autoplay: true,
autoplaySpeed: 2000,
nextArrow: <NextArrow />,
prevArrow: <PrevArrow />,
};
return (
<div className="slick-slider">
<Slider {...settings}>
{props.searchResults.map((image, index) => (
<div key={index}>
<img src={image.urls.small} />{" "}
</div>
))}
</Slider>
</div>
);
}
SCSS Code:
.slick-arrow-icon-left,
.slick-arrow-icon-right {
position: absolute;
display: block;
cursor: pointer;
background: transparent;
color: black;
top: 50%;
-webkit-transform: translate(0, -50%);
-ms-transform: translate(0, -50%);
transform: translate(0, -50%);
padding: 0;
border: none;
outline: none;
transition: 0.5s ease-in-out;
&:hover,
&:focus {
outline: none;
background: transparent;
color: black;
font-size: 40px;
&::before {
opacity: 1;
}
}
}
.slick-arrow-icon-left {
left: -50px;
[dir="rtl"] & {
left: auto;
right: -50px;
}
}
.slick-arrow-icon-right {
right: -50px;
[dir="rtl"] & {
left: -50px;
right: auto;
}
}
Example Link:
https://slick-carousel-arrow-change.herokuapp.com/
Source Code:
**After setting the width and the height of the image then use the resizeMode property by setting it to cover or contain.The following blocks of code translate from normal css to react-native StyleSheet
// In normal css
.image{
width: 100px;
height: 100px;
object-fit: cover;
}
// in react-native StyleSheet
image:{
width: 100;
height: 100;
resizeMode: "cover";
}
OR object-fit contain
// In normal css
.image{
width: 100px;
height: 100px;
object-fit: contain;
}
// in react-native StyleSheet
image:{
width: 100;
height: 100;
resizeMode: "contain";
}
TL;DR: Scan down to image, and then check out working project here.
Updating my answer for a simpler solution that I found..
In my case, I wanted to fix the width, and have variable height cells. I wanted a drop in, reusable solution that handled rotation and didn't require a lot of intervention.
What I arrived at, was override (just) systemLayoutFitting(...)
in the collection cell (in this case a base class for me), and first defeat UICollectionView's effort to set the wrong dimension on contentView
by adding a constraint for the known dimension, in this case, the width.
class EstimatedWidthCell: UICollectionViewCell {
override init(frame: CGRect) {
super.init(frame: frame)
contentView.translatesAutoresizingMaskIntoConstraints = false
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
contentView.translatesAutoresizingMaskIntoConstraints = false
}
override func systemLayoutSizeFitting(
_ targetSize: CGSize, withHorizontalFittingPriority
horizontalFittingPriority: UILayoutPriority,
verticalFittingPriority: UILayoutPriority) -> CGSize {
width.constant = targetSize.width
and then return the final size for the cell - used for (and this feels like a bug) the dimension of the cell itself, but not contentView
- which is otherwise constrained to a conflicting size (hence the constraint above). To calculate the correct cell size, I use a lower priority for the dimension that I wanted to float, and I get back the height required to fit the content within the width to which I want to fix:
let size = contentView.systemLayoutSizeFitting(
CGSize(width: targetSize.width, height: 1),
withHorizontalFittingPriority: .required,
verticalFittingPriority: verticalFittingPriority)
print("\(#function) \(#line) \(targetSize) -> \(size)")
return size
}
lazy var width: NSLayoutConstraint = {
return contentView.widthAnchor
.constraint(equalToConstant: bounds.size.width)
.isActive(true)
}()
}
But where does this width come from? It is configured via the estimatedItemSize
on the collection view's flow layout:
lazy var collectionView: UICollectionView = {
let view = UICollectionView(frame: CGRect(), collectionViewLayout: layout)
view.backgroundColor = .cyan
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
lazy var layout: UICollectionViewFlowLayout = {
let layout = UICollectionViewFlowLayout()
let width = view.bounds.size.width // should adjust for inset
layout.estimatedItemSize = CGSize(width: width, height: 10)
layout.scrollDirection = .vertical
return layout
}()
Finally, to handle rotation, I implement trailCollectionDidChange
to invalidate the layout:
override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
layout.estimatedItemSize = CGSize(width: view.bounds.size.width, height: 10)
layout.invalidateLayout()
super.traitCollectionDidChange(previousTraitCollection)
}
The final result looks like this:
And I have published a working sample here.
Windows solution: Replace spawn
with node-cross-spawn. For instance like this at the beginning of your app.js:
(function() {
var childProcess = require("child_process");
childProcess.spawn = require('cross-spawn');
})();
After a bit of trial and error... as mentioned in the possible answers, it turned out to require xfs_growfs
rather than resize2fs
.
CentOS 7,
fdisk /dev/xvda
Create new primary partition, set type as linux lvm
.
n
p
3
t
8e
w
Create a new primary volume and extend the volume group to the new volume.
partprobe
pvcreate /dev/xvda3
vgextend /dev/centos /dev/xvda3
Check the physical volume for free space, extend the logical volume with the free space.
vgdisplay -v
lvextend -l+288 /dev/centos/root
Finally perform an online resize to resize the logical volume, then check the available space.
xfs_growfs /dev/centos/root
df -h
Basically it involved 3 steps
fileprivate func setupName() {
lblName.text = "Hello world"
// Step 1
lblName.translatesAutoresizingMaskIntoConstraints = false
//Step 2
self.view.addSubview(lblName)
//Step 3
NSLayoutConstraint.activate([
lblName.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
lblName.centerYAnchor.constraint(equalTo: self.view.centerYAnchor)
])
}
This puts label "hello world" in center of screen.
Please refer link Autolayout constraints programmatically
The solution comprises 3 simple steps:
flowLayout.estimatedItemSize = UICollectionViewFlowLayout.automaticSize
collectionView(:cellForItemAt:)
to limit the width of contentView to width of collectionView.class ViewController: UIViewController, UICollectionViewDataSource {
...
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellId", for: indexPath) as! MultiLineCell
cell.textView.text = dummyTextMessages[indexPath.row]
cell.maxWidth = collectionView.frame.width
return cell
}
...
}
class MultiLineCell: UICollectionViewCell{
....
var maxWidth: CGFloat? {
didSet {
guard let maxWidth = maxWidth else {
return
}
containerViewWidthAnchor.constant = maxWidth
containerViewWidthAnchor.isActive = true
}
}
....
}
Since you want to enable self-sizing of UITextView, it has an additional step to;
So, whenever the width of contentView is set we'll adjust height of UITextView along in didSet
of maxWidth
.
Inside UICollectionViewCell:
var maxWidth: CGFloat? {
didSet {
guard let maxWidth = maxWidth else {
return
}
containerViewWidthAnchor.constant = maxWidth
containerViewWidthAnchor.isActive = true
let sizeToFitIn = CGSize(width: maxWidth, height: CGFloat(MAXFLOAT))
let newSize = self.textView.sizeThatFits(sizeToFitIn)
self.textViewHeightContraint.constant = newSize.height
}
}
These steps will get you the desired result.
Reference: Vadim Bulavin blog post - Collection View Cells Self-Sizing: Step by Step Tutorial
Screenshot:
From the docs:
Modals have two optional sizes, available via modifier classes to be placed on a .modal-dialog
: modal-lg
and modal-sm
(as of 3.1).
Also the modal dialogue will scale itself on small screens (as of 3.1.1).
Rucksack is brilliant, but you don't necessarily have to resort to build tools like Gulp or Grunt etc.
I made a demo using CSS Custom Properties (CSS Variables) to easily control the min and max font sizes.
Like so:
* {
/* Calculation */
--diff: calc(var(--max-size) - var(--min-size));
--responsive: calc((var(--min-size) * 1px) + var(--diff) * ((100vw - 420px) / (1200 - 420))); /* Ranges from 421px to 1199px */
}
h1 {
--max-size: 50;
--min-size: 25;
font-size: var(--responsive);
}
h2 {
--max-size: 40;
--min-size: 20;
font-size: var(--responsive);
}
It looks to me like the background images aren't actually background images...the site has the background images and the quotes in sibling divs with the children of the div containing the images having been assigned position: fixed; The quotes div is also given a transparent background.
wrapper div{
image wrapper div{
div for individual image{ <--- Fixed position
image <--- relative position
}
}
quote wrapper div{
div for individual quote{
quote
}
}
}
You could achieve that simply by wrapping the image by a <div>
and adding overflow: hidden
to that element:
<div class="img-wrapper">
<img src="..." />
</div>
.img-wrapper {
display: inline-block; /* change the default display type to inline-block */
overflow: hidden; /* hide the overflow */
}
Also it's worth noting that <img>
element (like the other inline elements) sits on its baseline by default. And there would be a 4~5px
gap at the bottom of the image.
That vertical gap belongs to the reserved space of descenders like: g j p q y. You could fix the alignment issue by adding vertical-align
property to the image with a value other than baseline
.
Additionally for a better user experience, you could add transition
to the images.
Thus we'll end up with the following:
.img-wrapper img {
transition: all .2s ease;
vertical-align: middle;
}
The simplest way is to set the background-size
CSS property to cover
:
.jumbotron {
background-image: url("../img/jumbotron_bg.jpg");
background-size: cover;
}
Try to slightly modify your code:
Sub forEachWs()
Dim ws As Worksheet
For Each ws In ActiveWorkbook.Worksheets
Call resizingColumns(ws)
Next
End Sub
Sub resizingColumns(ws As Worksheet)
With ws
.Range("A:A").ColumnWidth = 20.14
.Range("B:B").ColumnWidth = 9.71
.Range("C:C").ColumnWidth = 35.86
.Range("D:D").ColumnWidth = 30.57
.Range("E:E").ColumnWidth = 23.57
.Range("F:F").ColumnWidth = 21.43
.Range("G:G").ColumnWidth = 18.43
.Range("H:H").ColumnWidth = 23.86
.Range("i:I").ColumnWidth = 27.43
.Range("J:J").ColumnWidth = 36.71
.Range("K:K").ColumnWidth = 30.29
.Range("L:L").ColumnWidth = 31.14
.Range("M:M").ColumnWidth = 31
.Range("N:N").ColumnWidth = 41.14
.Range("O:O").ColumnWidth = 33.86
End With
End Sub
Note, resizingColumns
routine takes parametr - worksheet to which Ranges belongs.
Basically, when you're using Range("O:O")
- code operats with range from ActiveSheet, that's why you should use With ws
statement and then .Range("O:O")
.
And there is no need to use global variables (unless you are using them somewhere else)
This is a press down button example I've made:
<div>
<form id="forminput" action="action" method="POST">
...
</form>
<div style="right: 0px;bottom: 0px;position: fixed;" class="thumbnail">
<div class="image">
<a onclick="document.getElementById('forminput').submit();">
<img src="images/button.png" alt="Some awesome text">
</a>
</div>
</div>
</div>
the CSS file:
.thumbnail {
width: 128px;
height: 128px;
}
.image {
width: 100%;
height: 100%;
}
.image img {
-webkit-transition: all .25s ease; /* Safari and Chrome */
-moz-transition: all .25s ease; /* Firefox */
-ms-transition: all .25s ease; /* IE 9 */
-o-transition: all .25s ease; /* Opera */
transition: all .25s ease;
max-width: 100%;
max-height: 100%;
}
.image:hover img {
-webkit-transform:scale(1.05); /* Safari and Chrome */
-moz-transform:scale(1.05); /* Firefox */
-ms-transform:scale(1.05); /* IE 9 */
-o-transform:scale(1.05); /* Opera */
transform:scale(1.05);
}
.image:active img {
-webkit-transform:scale(.95); /* Safari and Chrome */
-moz-transform:scale(.95); /* Firefox */
-ms-transform:scale(.95); /* IE 9 */
-o-transform:scale(.95); /* Opera */
transform:scale(.95);
}
Enjoy it!
ok in addition to @user3096626 answer i think it will be more helpful if someone provided code example, the following example will show you how to fix image orientation comes from url (remote images):
Solution 1: using javascript (recommended)
because load-image library doesn't extract exif tags from url images only (file/blob), we will use both exif-js and load-image javascript libraries, so first add these libraries to your page as the follow:
<script src="https://cdnjs.cloudflare.com/ajax/libs/exif-js/2.1.0/exif.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-load-image/2.12.2/load-image.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-load-image/2.12.2/load-image-scale.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-load-image/2.12.2/load-image-orientation.min.js"></script>
Note the version 2.2 of exif-js seems has issues so we used 2.1
then basically what we will do is
a - load the image using window.loadImage()
b - read exif tags using window.EXIF.getData()
c - convert the image to canvas and fix the image orientation using window.loadImage.scale()
d - place the canvas into the document
here you go :)
window.loadImage("/your-image.jpg", function (img) {
if (img.type === "error") {
console.log("couldn't load image:", img);
} else {
window.EXIF.getData(img, function () {
var orientation = EXIF.getTag(this, "Orientation");
var canvas = window.loadImage.scale(img, {orientation: orientation || 0, canvas: true});
document.getElementById("container").appendChild(canvas);
// or using jquery $("#container").append(canvas);
});
}
});
of course also you can get the image as base64 from the canvas object and place it in the img src attribute, so using jQuery you can do ;)
$("#my-image").attr("src",canvas.toDataURL());
here is the full code on: github: https://github.com/digital-flowers/loadimage-exif-example
Solution 2: using html (browser hack)
there is a very quick and easy hack, most browsers display the image in the right orientation if the image is opened inside a new tab directly without any html (LOL i don't know why), so basically you can display your image using iframe by putting the iframe src attribute as the image url directly:
<iframe src="/my-image.jpg"></iframe>
Solution 3: using css (only firefox & safari on ios)
there is css3 attribute to fix image orientation but the problem it is only working on firefox and safari/ios it is still worth mention because soon it will be available for all browsers (Browser support info from caniuse)
img {
image-orientation: from-image;
}
Source Link
Method 1) Display type flex
.child-element{ display: flex; justify-content: center; align-items: center; }
Method 2) 2D Transform
.child-element { top: 50%; left: 50%; transform: translate(-50% , -50%); position: absolute; }
See other methods here
If all your trying to do is fill the div this might help someone else, if aspect ratio is not important, is responsive.
.img-fill > img {
min-height: 100%;
min-width: 100%;
}
DEMO: Resizing images with JS and HTML Canvas Demo fiddler.
You may find 3 different methods to do this resize, that will help you understand how the code is working and why.
https://jsfiddle.net/1b68eLdr/93089/
Full code of both demo, and TypeScript method that you may want to use in your code, can be found in the GitHub project.
https://github.com/eyalc4/ts-image-resizer
This is the final code:
export class ImageTools {
base64ResizedImage: string = null;
constructor() {
}
ResizeImage(base64image: string, width: number = 1080, height: number = 1080) {
let img = new Image();
img.src = base64image;
img.onload = () => {
// Check if the image require resize at all
if(img.height <= height && img.width <= width) {
this.base64ResizedImage = base64image;
// TODO: Call method to do something with the resize image
}
else {
// Make sure the width and height preserve the original aspect ratio and adjust if needed
if(img.height > img.width) {
width = Math.floor(height * (img.width / img.height));
}
else {
height = Math.floor(width * (img.height / img.width));
}
let resizingCanvas: HTMLCanvasElement = document.createElement('canvas');
let resizingCanvasContext = resizingCanvas.getContext("2d");
// Start with original image size
resizingCanvas.width = img.width;
resizingCanvas.height = img.height;
// Draw the original image on the (temp) resizing canvas
resizingCanvasContext.drawImage(img, 0, 0, resizingCanvas.width, resizingCanvas.height);
let curImageDimensions = {
width: Math.floor(img.width),
height: Math.floor(img.height)
};
let halfImageDimensions = {
width: null,
height: null
};
// Quickly reduce the size by 50% each time in few iterations until the size is less then
// 2x time the target size - the motivation for it, is to reduce the aliasing that would have been
// created with direct reduction of very big image to small image
while (curImageDimensions.width * 0.5 > width) {
// Reduce the resizing canvas by half and refresh the image
halfImageDimensions.width = Math.floor(curImageDimensions.width * 0.5);
halfImageDimensions.height = Math.floor(curImageDimensions.height * 0.5);
resizingCanvasContext.drawImage(resizingCanvas, 0, 0, curImageDimensions.width, curImageDimensions.height,
0, 0, halfImageDimensions.width, halfImageDimensions.height);
curImageDimensions.width = halfImageDimensions.width;
curImageDimensions.height = halfImageDimensions.height;
}
// Now do final resize for the resizingCanvas to meet the dimension requirments
// directly to the output canvas, that will output the final image
let outputCanvas: HTMLCanvasElement = document.createElement('canvas');
let outputCanvasContext = outputCanvas.getContext("2d");
outputCanvas.width = width;
outputCanvas.height = height;
outputCanvasContext.drawImage(resizingCanvas, 0, 0, curImageDimensions.width, curImageDimensions.height,
0, 0, width, height);
// output the canvas pixels as an image. params: format, quality
this.base64ResizedImage = outputCanvas.toDataURL('image/jpeg', 0.85);
// TODO: Call method to do something with the resize image
}
};
}}
If you are using the Master.Site template in Visual Studio 15, the base project has "Site.css" which OVERRIDES the width of form-control fields.
I could not get the width of my text boxes to get any wider than about 300px wide. I tried EVERYTHING and nothing worked. I found that there is a setting in Site.css which was causing the problem.
Get rid of this and you can get control over your field widths.
/* Set widths on the form inputs since otherwise they're 100% wide */
input[type="text"],
input[type="password"],
input[type="email"],
input[type="tel"],
input[type="select"] {
max-width: 280px;
}
This Code May be Help you : [ Both maximizing and preventing resizing on a JFrame ]
frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
frame.setVisible(true);
frame.setResizable(false);
it's 2021 and here's a fantastically easy plugin to upload anything:
https://pqina.nl/filepond/?ref=pqina
add your element:
<input type="file"
class="filepond"
name="filepond"
multiple
data-allow-reorder="true"
data-max-file-size="3MB"
data-max-files="3">
Register any additional plugins:
FilePond.registerPlugin(
FilePondPluginImagePreview,
FilePondPluginImageExifOrientation,
FilePondPluginFileValidateSize,
FilePondPluginImageEdit);
Then wire in the element:
// Select the file input and use
// create() to turn it into a pond
FilePond.create(
document.querySelector('input'),
// Use Doka.js as image editor
imageEditEditor: Doka.create({
utils: ['crop', 'filter', 'color']
})
);
I use this with the additional Doka image editor to upload and transform images at https://www.yoodu.co.uk
crazy simple to setup and the guys who run it are great at support.
As you can tell I'm a fanboy.
Example of using border-collapse: separate; as
ol[type="I"]>li{
display: table;
border-collapse: separate;
border-spacing: 1rem;
}
Change your TableView Style:
self.tableview = [[UITableView alloc] initwithFrame:frame style:UITableViewStyleGrouped];
As per apple documentation for UITableView:
UITableViewStylePlain- A plain table view. Any section headers or footers are displayed as inline separators and float when the table view is scrolled.
UITableViewStyleGrouped- A table view whose sections present distinct groups of rows. The section headers and footers do not float.
Hope this small change will help you ..
You can use android:windowSoftInputMode="stateAlwaysHidden|adjustResize"
in AndroidManifest.xml for your current activity,
and use android:fitsSystemWindows="true"
in styles or rootLayout.
Had the same problem and none of the CSS solutions presented here worked.
What worked for me was setting up a height="360" without setting any width. My photos aren't the same size and like this they have room to adjust their with but keep the height fixed.
CSS
body {
background: rgb(204,204,204);
}
page[size="A4"] {
background: white;
width: 21cm;
height: 29.7cm;
display: block;
margin: 0 auto;
margin-bottom: 0.5cm;
box-shadow: 0 0 0.5cm rgba(0,0,0,0.5);
}
@media print {
body, page[size="A4"] {
margin: 0;
box-shadow: 0;
}
}
HTML
<page size="A4"></page>
<page size="A4"></page>
<page size="A4"></page>
Look for 'responsive SVG' it is pretty simple to make a SVG responsive and you don't have to worry about sizes any more.
Here is how I did it:
d3.select("div#chartId")_x000D_
.append("div")_x000D_
// Container class to make it responsive._x000D_
.classed("svg-container", true) _x000D_
.append("svg")_x000D_
// Responsive SVG needs these 2 attributes and no width and height attr._x000D_
.attr("preserveAspectRatio", "xMinYMin meet")_x000D_
.attr("viewBox", "0 0 600 400")_x000D_
// Class to make it responsive._x000D_
.classed("svg-content-responsive", true)_x000D_
// Fill with a rectangle for visualization._x000D_
.append("rect")_x000D_
.classed("rect", true)_x000D_
.attr("width", 600)_x000D_
.attr("height", 400);
_x000D_
.svg-container {_x000D_
display: inline-block;_x000D_
position: relative;_x000D_
width: 100%;_x000D_
padding-bottom: 100%; /* aspect ratio */_x000D_
vertical-align: top;_x000D_
overflow: hidden;_x000D_
}_x000D_
.svg-content-responsive {_x000D_
display: inline-block;_x000D_
position: absolute;_x000D_
top: 10px;_x000D_
left: 0;_x000D_
}_x000D_
_x000D_
svg .rect {_x000D_
fill: gold;_x000D_
stroke: steelblue;_x000D_
stroke-width: 5px;_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>_x000D_
_x000D_
<div id="chartId"></div>
_x000D_
Note: Everything in the SVG image will scale with the window width. This includes stroke width and font sizes (even those set with CSS). If this is not desired, there are more involved alternate solutions below.
More info / tutorials:
http://thenewcode.com/744/Make-SVG-Responsive
http://soqr.fr/testsvg/embed-svg-liquid-layout-responsive-web-design.php
This may be too simplistic of an answer (I am still new here), but what I have done in the past to remedy this situation is figured out the percentage of the screen I would like the image to take up. For example, there is one webpage I am working on where the logo must take up 30% of the screen size to look best. I played around and finally tried this code and it has worked for me thus far:
img {
width:30%;
height:auto;
}
That being said, this will change all of your images to be 30% of the screen size at all times. To get around this issue, simply make this a class and apply it to the image that you desire to be at 30% directly. Here is an example of the code I wrote to accomplish this on the aforementioned site:
the CSS portion:
.logo {
position:absolute;
right:25%;
top:0px;
width:30%;
height:auto;
}
the HTML portion:
<img src="logo_001_002.png" class="logo">
Alternatively, you could place ever image you hope to automatically resize into a div of its own and use the class tag option on each div (creating now class tags whenever needed), but I feel like that would cause a lot of extra work eventually. But, if the site calls for it: the site calls for it.
Hopefully this helps. Have a great day!
Since Android O, it's possible to auto resize text in xml:
https://developer.android.com/preview/features/autosizing-textview.html
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:autoSizeTextType="uniform"
app:autoSizeMinTextSize="12sp"
app:autoSizeMaxTextSize="100sp"
app:autoSizeStepGranularity="2sp"
/>
Android O allows you to instruct a TextView to let the text size expand or contract automatically to fill its layout based on the TextView's characteristics and boundaries. This setting makes it easier to optimize the text size on different screens with dynamic content.
The Support Library 26.0 Beta provides full support to the autosizing TextView feature on devices running Android versions prior to Android O. The library provides support to Android 4.0 (API level 14) and higher. The android.support.v4.widget package contains the TextViewCompat class to access features in a backward-compatible fashion.
In my case the only work solution was:
bad_table
ENGINE=MyISAM ...bad_table
Short answer:
const base64Canvas = canvas.toDataURL("image/jpeg").split(';base64,')[1];
If you are using Scene Builder, you will see at the right an accordion panel which normally has got three options ("Properties", "Layout" and "Code"). In the second one ("Layout"), you will see an option called "[parent layout] Constraints" (in your case "AnchorPane Constrainsts").
You should put "0" in the four sides of the element wich represents the parent layout.
Try this :
width:auto;
margin-right:50px;
For the height of a div to be responsive, it must be inside a parent element with a defined height to derive it's relative height from.
If you set the height of the container holding the image and text box on the right, you can subsequently set the heights of its two children to be something like 75% and 25%.
However, this will get a bit tricky when the site layout gets narrower and things will get wonky. Try setting the padding on .contentBg to something like 5.5%.
My suggestion is to use Media Queries to tweak the padding at different screen sizes, then bump everything into a single column when appropriate.
Put a large div inside the div, center that, and the center the image inside that div.
This centers it horizontally:
HTML:
<div class="imageContainer">
<div class="imageCenterer">
<img src="http://placekitten.com/200/200" />
</div>
</div>
CSS:
.imageContainer {
width: 100px;
height: 100px;
overflow: hidden;
position: relative;
}
.imageCenterer {
width: 1000px;
position: absolute;
left: 50%;
top: 0;
margin-left: -500px;
}
.imageCenterer img {
display: block;
margin: 0 auto;
}
Demo: http://jsfiddle.net/Guffa/L9BnL/
To center it vertically also, you can use the same for the inner div, but you would need the height of the image to place it absolutely inside it.
I encountered this same problem today. As suggested in this answer, the problem was an unclean xib. In my case the unclean xib was the result of updating a xib that was being loaded by something other than the view controller it was associated with.
Xcode let me create and populate a new outlet and connected it to the file's owner even though I explicitly connected it to the source of the correct view controller. Here's the code generated by Xcode:
<placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="LoginViewController"]]>
<connections>
<outlet property="hostLabel" destination="W4x-T2-Mcm" id="c3E-1U-sVf"/>
</connections>
</placeholder>
When I ran my app it crashed with the same not key value coding-compliant
error. To correct the problem, I removed the outlet from the File's Owner in Interface Builder and connected it explicitly to the view controller object on the left outline instead of to the code in the assistant editor.
Not nice, but works:
int[] a = {1, 2, 3};
// make a one bigger
a = Arrays.copyOf(a, a.length + 1);
for (int i : a)
System.out.println(i);
as stated before, go with ArrayList
Instead using sScrollX,sScrollY use separate div style
.scrollStyle
{
height:200px;overflow-x:auto;overflow-y:scroll;
}
Add below after datatable call in script
jQuery('.dataTable').wrap('<div class="scrollStyle" />');
Its working perfectly after many tries.
I've been looking at the markdown syntax used in github [...], I can't figure out how to center an image
TL;DR
No you can't by only relying on Markdown syntax. Markdown doesn't care with positioning.
Note: Some markdown processors support inclusion of HTML (as rightfully pointed out by @waldyr.ar), and in the GitHub case you may fallback to something like <div style="text-align:center"><img src="..." /></div>
. Beware that there's no guarantee the image will be centered if your repository is forked in a different hosting environment (Codeplex, BitBucket, ...) or if the document isn't read through a browser (Sublime Text Markdown preview, MarkdownPad, VisualStudio Web Essentials Markdown preview, ...).
Note 2: Keep in mind that even within the GitHub website, the way markdown is rendered is not uniform. The wiki, for instance, won't allow such css positional trickery.
Unabridged version
The Markdown syntax doesn't provide one with the ability to control the position of an image.
In fact, it would be borderline against the Markdown philosophy to allow such formatting, as stated in the "Philosophy" section
"A Markdown-formatted document should be publishable as-is, as plain text, without looking like it’s been marked up with tags or formatting instructions. "
Markdown files are rendered by github.com website through the use of the Ruby Redcarpet library.
Redcarpet exposes some extensions (such as strikethrough, for instance) which are not part of standard Markdown syntax and provide additional "features". However, no supported extension allow you to center an image.
Use inline styles:
<div class="button" style="width:60px;height:100px;">This is a button</div>
I have followed SO questions and answers from each search query. But they all are related with specific one.
At the basic, I mean before you are going to write down a format (may be a simple one) it will gives you a warnings.
From iOS 8.0 by default views are size classes. Even if you disable size classes it will still contains some auto layout constraints.
So if you are planning to set constrains via code using VFL. Then you must take care of one below line.
// Remove constraints if any.
[self.view removeConstraints:self.view.constraints];
I had search a lot in SO, but the solution was lies in Apple Sample Code.
So you must have to remove default constraints before planning to add new one.
A quick and simple option:
Move content from old disk to inside new disk:
vboxmanage clonehd "source-disk.vmdk" "new-disk.vmdk" --existing
Turn on machine
Warning
If new disk is shorter than source, you will loss the data located from the new disk size position on the source disk.
You may prevent this deallocating delta space, where delta = size(source-disk) - size(new-disk), at the end of source disk inside OS before step 1.
As per the question, i have listed the answers in javascript
By Selecting TagName
document.getElementsByTagName('textarea')[0].style.resize = "none";
By Selecting Id
document.getElementById('textArea').style.resize = "none";
If you want to remove CSS transitions, transformations and animations from the current webpage you can just execute this little script I wrote (inside your browsers console):
let filePath = "https://dl.dropboxusercontent.com/s/ep1nzckmvgjq7jr/remove_transitions_from_page.css";
let html = `<link rel="stylesheet" type="text/css" href="${filePath}">`;
document.querySelector("html > head").insertAdjacentHTML("beforeend", html);
It uses vanillaJS to load this css-file. Heres also a github repo in case you want to use this in the context of a scraper (Ruby-Selenium): remove-CSS-animations-repo
var img = new Image();
$(img).load(function(){
$('.container').append($(this));
}).attr({
src: someRemoteImage
}).error(function(){
//do something if image cannot load
});
Typescript
async resizeImg(file: Blob): Promise<Blob> {
let img = document.createElement("img");
img.src = await new Promise<any>(resolve => {
let reader = new FileReader();
reader.onload = (e: any) => resolve(e.target.result);
reader.readAsDataURL(file);
});
await new Promise(resolve => img.onload = resolve)
let canvas = document.createElement("canvas");
let ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0);
let MAX_WIDTH = 1000;
let MAX_HEIGHT = 1000;
let width = img.naturalWidth;
let height = img.naturalHeight;
if (width > height) {
if (width > MAX_WIDTH) {
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
}
} else {
if (height > MAX_HEIGHT) {
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
}
}
canvas.width = width;
canvas.height = height;
ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0, width, height);
let result = await new Promise<Blob>(resolve => { canvas.toBlob(resolve, 'image/jpeg', 0.95); });
return result;
}
This is a very old, but still very useful thread. I came here recently with the same issue. I suggest protecting the sheet when appropriate and unprotecting it when the filter row (eg Row 1) is selected. My solution doesn't use password protection - I don't need it (its a safeguard, not a security feature). I can't find an event handler that recognizes selection of a filter button - so I gave the instruction to my users to first select the filter cell then click the filter button. Here's what I advocate, (I only change protection if it needs to be changed, that may or may not save time - I don't know, but it "feels" right):
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Const FilterRow = 1
Dim c As Range
Dim NotFilterRow As Boolean
Dim oldstate As Boolean
Dim ws As Worksheet
Set ws = ActiveSheet
oldstate = ws.ProtectContents
NotFilterRow = False
For Each c In Target.Cells
NotFilterRow = c.Row <> FilterRow
If NotFilterRow Then Exit For
Next c
If NotFilterRow <> oldstate Then
If NotFilterRow Then
ws.Protect
Else
ws.Unprotect
End If
End If
Set ws = Nothing
End Sub
Try absolute positioning:
<div style="position:relative;width:100%;">
<div id="help" style="
position:absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
z-index:1;">
<img src="/portfolio/space_1_header.png" border="0" style="width:100%;">
</div>
</div>
function myResizeFunction() {
...
}
$(function() {
$(window).resize(myResizeFunction).trigger('resize');
});
This will cause your resize handler to trigger on window resize and on document ready. Of course, you can attach your resize handler outside of the document ready handler if you want .trigger('resize')
to run on page load instead.
UPDATE: Here's another option if you don't want to make use of any other third-party libraries.
This technique adds a specific class to your target element so you have the advantage of controlling the styling through CSS only (and avoiding inline styling).
It also ensures that the class is only added or removed when the actual threshold point is triggered and not on each and every resize. It will fire at one threshold point only: when the height changes from <= 818 to > 819 or vice versa and not multiple times within each region. It's not concerned with any change in width.
function myResizeFunction() {
var $window = $(this),
height = Math.ceil($window.height()),
previousHeight = $window.data('previousHeight');
if (height !== previousHeight) {
if (height < 819)
previousHeight >= 819 && $('.footer').removeClass('hgte819');
else if (!previousHeight || previousHeight < 819)
$('.footer').addClass('hgte819');
$window.data('previousHeight', height);
}
}
$(function() {
$(window).on('resize.optionalNamespace', myResizeFunction).triggerHandler('resize.optionalNamespace');
});
As an example, you might have the following as some of your CSS rules:
.footer {
bottom: auto;
left: auto;
position: static;
}
.footer.hgte819 {
bottom: 3px;
left: 0;
position: absolute;
}
Use #element{ height:100vh}
This will set the height of the #element
to 100% of viewport
.
Hope this helps.
<div id ="container"> <img src = "http://animalia-life.com/data_images/duck/duck9.jpg"/>
#container img {
max-width:250px;
max-height:250px;
width: 250px;
height: 250px;
border:1px solid #000;
}
The img will lose aspect ratio
Here is another (working) solution : just resize your images to the size you want :)
.pdflink:after {
display: block;
width: 20px;
height: 10px;
content:url('/images/pdf.png');
}
you need pdf.png to be 20px * 10px for this to work. The 20px/10px in the css are here to give the size of the block so that the elements that come after the block are not all messed up with the image
Don't forget to keep a copy of the raw image in its original size
hi firstly there seems to be many 'errors' in your html where you are missing closing tags, you could try wrapping the contents of your <body>
in a fixed width <div style="margin: 0 auto; width: 900px>
to achieve what you have done with the body {margin: 0 10% 0 10%}
HTML:
<span>
<img src="example.png"/>
</span>
CSS:
span {
display: inline-block;
}
img {
width: 50%;
}
This has got to be one of the simplest solutions using the container element approach.
When using the container element approach, this question is a variation of this question. The trick is to let the container element shrinkwrap the child image, so it will have a size equal to that of the unsized image. Thus, when setting width
property of the image as a percentage value, the image is scaled relative to its original scale.
Some of the other shrinkwrapping-enabling properties and property values are: float: left/right
, position: fixed
and min/max-width
, as mentioned in the linked question. Each has its own side-effects, but display: inline-block
would be a safer choice. Matt has mentioned float: left/right
in his answer, but he wrongly attributed it to overflow: hidden
.
Edit: As mentioned by trojan, you can also take advantage of the newly introduced CSS3 intrinsic & extrinsic sizing module:
HTML:
<figure>
<img src="example.png"/>
</figure>
CSS:
figure {
width: intrinsic;
}
img {
width: 50%;
}
However, not all popular browser versions support it at the time of writing.
Have you tried capturing the div resize event and doing .fnDraw()
on the datatable? fnDraw
should resize the table for you
The Qt documentations has an Image Viewer example which demonstrates handling resizing images inside a QLabel
. The basic idea is to use QScrollArea
as a container for the QLabel
and if needed use label.setScaledContents(bool)
and scrollarea.setWidgetResizable(bool)
to fill available space and/or ensure QLabel inside is resizable.
Additionally, to resize QLabel while honoring aspect ratio use:
label.setPixmap(pixmap.scaled(width, height, Qt::KeepAspectRatio, Qt::FastTransformation));
The width
and height
can be set based on scrollarea.width()
and scrollarea.height()
.
In this way there is no need to subclass QLabel.
Another way is to change properties "AutoSize" (set to True) and "AutosizeMode" (set to GrowAndShrink).
This has the effect of the form autosizing to the elements on it and never allowing the user to change its size.
Zeeshan Tufail and Womble answers in Swift 5 with small improvements.
Here we have extension with 2 functions to scale image to maxLength
of any dimension and jpeg compression.
extension UIImage {
func aspectFittedToMaxLengthData(maxLength: CGFloat, compressionQuality: CGFloat) -> Data {
let scale = maxLength / max(self.size.height, self.size.width)
let format = UIGraphicsImageRendererFormat()
format.scale = scale
let renderer = UIGraphicsImageRenderer(size: self.size, format: format)
return renderer.jpegData(withCompressionQuality: compressionQuality) { context in
self.draw(in: CGRect(origin: .zero, size: self.size))
}
}
func aspectFittedToMaxLengthImage(maxLength: CGFloat, compressionQuality: CGFloat) -> UIImage? {
let newImageData = aspectFittedToMaxLengthData(maxLength: maxLength, compressionQuality: compressionQuality)
return UIImage(data: newImageData)
}
}
I have used:
let originY: CGFloat = self.navigationController!.navigationBar.frame.maxY
Working great if you want to get the navigation bar height AND its Y origin.
Nice question. A lot of the answers here had a solution directly contradicting what you were asking
"I know how to use jQuery to assign width, height, etc. to an element, but what I'm trying to do is actually change the value defined in the stylesheet so that the dynamically-created value can be assigned to multiple elements.
"
jQuery .css
styles elements inline: it doesn't change the physical CSS rule! If you want to do this, I would suggest using a vanilla JavaScript solution:
document.styleSheets[0].cssRules[0].cssText = "\
#myID {
myRule: myValue;
myOtherRule: myOtherValue;
}";
This way, you're setting the stylesheet css rule, not appending an inline style.
Hope this helps!
It's relative to default browser font-size unless you override it with a value in pt or px.
LinearLayout YOUR_LinearLayout =(LinearLayout)findViewById(R.id.YOUR_LinearLayout)
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
/*width*/ ViewGroup.LayoutParams.MATCH_PARENT,
/*height*/ 100,
/*weight*/ 1.0f
);
YOUR_LinearLayout.setLayoutParams(param);
This is pretty much an exact copy of the top answer, but instead of a link, it's just the part of the code that matters, translated to be IMO more readable and easier to understand. A few other small changes include using cloneNode(), and not putting html into a js string. Small stuff, but you can copy and paste this as is and it will work.
The way it works is by making two invisible divs fill the element you're watching, and then putting a trigger in each, and setting a scroll position that will lead to triggering a scroll change if the size changes.
All real credit goes to Marc J, but if you're just looking for the relevant code, here it is:
window.El = {}
El.resizeSensorNode = undefined;
El.initResizeNode = function() {
var fillParent = "display: block; position: absolute; left: 0; top: 0; right: 0; bottom: 0; overflow: hidden; z-index: -1; visibility: hidden;";
var triggerStyle = "position: absolute; left: 0; top: 0; transition: 0s;";
var resizeSensor = El.resizeSensorNode = document.createElement("resizeSensor");
resizeSensor.style = fillParent;
var expandSensor = document.createElement("div");
expandSensor.style = fillParent;
resizeSensor.appendChild(expandSensor);
var trigger = document.createElement("div");
trigger.style = triggerStyle;
expandSensor.appendChild(trigger);
var shrinkSensor = expandSensor.cloneNode(true);
shrinkSensor.firstChild.style = triggerStyle + " width: 200%; height: 200%";
resizeSensor.appendChild(shrinkSensor);
}
El.onSizeChange = function(domNode, fn) {
if (!domNode) return;
if (domNode.resizeListeners) {
domNode.resizeListeners.push(fn);
return;
}
domNode.resizeListeners = [];
domNode.resizeListeners.push(fn);
if(El.resizeSensorNode == undefined)
El.initResizeNode();
domNode.resizeSensor = El.resizeSensorNode.cloneNode(true);
domNode.appendChild(domNode.resizeSensor);
var expand = domNode.resizeSensor.firstChild;
var expandTrigger = expand.firstChild;
var shrink = domNode.resizeSensor.childNodes[1];
var reset = function() {
expandTrigger.style.width = '100000px';
expandTrigger.style.height = '100000px';
expand.scrollLeft = 100000;
expand.scrollTop = 100000;
shrink.scrollLeft = 100000;
shrink.scrollTop = 100000;
};
reset();
var hasChanged, frameRequest, newWidth, newHeight;
var lastWidth = domNode.offsetWidth;
var lastHeight = domNode.offsetHeight;
var onResized = function() {
frameRequest = undefined;
if (!hasChanged) return;
lastWidth = newWidth;
lastHeight = newHeight;
var listeners = domNode.resizeListeners;
for(var i = 0; listeners && i < listeners.length; i++)
listeners[i]();
};
var onScroll = function() {
newWidth = domNode.offsetWidth;
newHeight = domNode.offsetHeight;
hasChanged = newWidth != lastWidth || newHeight != lastHeight;
if (hasChanged && !frameRequest) {
frameRequest = requestAnimationFrame(onResized);
}
reset();
};
expand.addEventListener("scroll", onScroll);
shrink.addEventListener("scroll", onScroll);
}
I tried to add to @user686605's work:
1) changed the cursor to col-resize at the th border
2) fixed the highlight text issue when resizing
I partially succeeded at both. Maybe someone who is better at CSS can help move this forward?
http://jsfiddle.net/telefonica/L2f7F/4/
HTML
<!--Click on th and drag...-->
<table>
<thead>
<tr>
<th><div class="noCrsr">th 1</div></th>
<th><div class="noCrsr">th 2</div></th>
</tr>
</thead>
<tbody>
<tr>
<td>td 1</td>
<td>td 2</td>
</tr>
</tbody>
</table>
JS
$(function() {
var pressed = false;
var start = undefined;
var startX, startWidth;
$("table th").mousedown(function(e) {
start = $(this);
pressed = true;
startX = e.pageX;
startWidth = $(this).width();
$(start).addClass("resizing");
$(start).addClass("noSelect");
});
$(document).mousemove(function(e) {
if(pressed) {
$(start).width(startWidth+(e.pageX-startX));
}
});
$(document).mouseup(function() {
if(pressed) {
$(start).removeClass("resizing");
$(start).removeClass("noSelect");
pressed = false;
}
});
});
CSS
table {
border-width: 1px;
border-style: solid;
border-color: black;
border-collapse: collapse;
}
table td {
border-width: 1px;
border-style: solid;
border-color: black;
}
table th {
border: 1px;
border-style: solid;
border-color: black;
background-color: green;
cursor: col-resize;
}
table th.resizing {
cursor: col-resize;
}
.noCrsr {
cursor: default;
margin-right: +5px;
}
.noSelect {
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
I am using an ImageView in an RelativeLayout that overlays with my normal layout. No code required. It sizes the image to the full height of the screen (or any other layout you use) and then crops the picture left and right to fit the width. In my case, if the user turns the screen, the picture may be a tiny bit too small. Therefore I use match_parent, which will make the image stretch in width if too small.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/main_backgroundImage"
android:layout_width="match_parent"
//comment: Stretches picture in the width if too small. Use "wrap_content" does not stretch, but leaves space
android:layout_height="match_parent"
//in my case I always want the height filled
android:layout_alignParentTop="true"
android:scaleType="centerCrop"
//will crop picture left and right, so it fits in height and keeps aspect ratio
android:contentDescription="@string/image"
android:src="@drawable/your_image" />
<LinearLayout
android:id="@+id/main_root"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
</LinearLayout>
</RelativeLayout>
We're doing this to create thumbnails of images:
BufferedImage tThumbImage = new BufferedImage( tThumbWidth, tThumbHeight, BufferedImage.TYPE_INT_RGB );
Graphics2D tGraphics2D = tThumbImage.createGraphics(); //create a graphics object to paint to
tGraphics2D.setBackground( Color.WHITE );
tGraphics2D.setPaint( Color.WHITE );
tGraphics2D.fillRect( 0, 0, tThumbWidth, tThumbHeight );
tGraphics2D.setRenderingHint( RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR );
tGraphics2D.drawImage( tOriginalImage, 0, 0, tThumbWidth, tThumbHeight, null ); //draw the image scaled
ImageIO.write( tThumbImage, "JPG", tThumbnailTarget ); //write the image to a file
The 60 you're passing is just the initial capacity for internal storage. It's a hint on how big you think it might be, yet of course it's not limited by that. If you need to preset values you'll have to set them yourself, e.g.:
for (int i = 0; i < 60; i++) {
list.add(0);
}
I could care less about IE6, as long as it works in IE8, Firefox 4, and Safari 5
This makes me happy.
Try this: Live Demo
display: table
is surprisingly good. Once you don't care about IE7, you're free to use it. It doesn't really have any of the usual downsides of <table>
.
CSS:
#container {
background: #ccc;
display: table
}
#left, #right {
display: table-cell
}
#left {
width: 150px;
background: #f0f;
border: 5px dotted blue;
}
#right {
background: #aaa;
border: 3px solid #000
}
i wrote a litte wrapper function on my own...
onResize = function(fn) {
if(!fn || typeof fn != 'function')
return 0;
var args = Array.prototype.slice.call(arguments, 1);
onResize.fnArr = onResize.fnArr || [];
onResize.fnArr.push([fn, args]);
onResize.loop = function() {
$.each(onResize.fnArr, function(index, fnWithArgs) {
fnWithArgs[0].apply(undefined, fnWithArgs[1]);
});
};
$(window).on('resize', function(e) {
window.clearTimeout(onResize.timeout);
onResize.timeout = window.setTimeout("onResize.loop();", 300);
});
};
Here is the usage:
var testFn = function(arg1, arg2) {
console.log('[testFn] arg1: '+arg1);
console.log('[testFn] arg2: '+arg2);
};
// document ready
$(function() {
onResize(testFn, 'argument1', 'argument2');
});
Use the FormBorderStyle
property. Make it FixedSingle
:
this.FormBorderStyle = FormBorderStyle.FixedSingle;
I started with Chase's AutoResizeTextView class, and made a minor change so it would fit both vertically and horizontally.
I also discovered a bug which causes a Null Pointer Exception in the Layout Editor (in Eclipse) under some rather obscure conditions.
Change 1: Fit the text both vertically and horizontally
Chase's original version reduces the text size until it fits vertically, but allows the text to be wider than the target. In my case, I needed the text to fit a specified width.
This change makes it resize until the text fits both vertically and horizontally.
In resizeText(
int,
int)
change from:
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
while(textHeight > height && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
}
to:
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
int textWidth = getTextWidth(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
while(((textHeight >= height) || (textWidth >= width) ) && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
textWidth = getTextWidth(text, textPaint, width, targetTextSize);
}
Then, at the end of the file, append the getTextWidth()
routine; it's just a slightly modified getTextHeight()
. It probably would be more efficient to combine them to one routine which returns both height and width.
// Set the text size of the text paint object and use a static layout to render text off screen before measuring
private int getTextWidth(CharSequence source, TextPaint paint, int width, float textSize) {
// Update the text paint object
paint.setTextSize(textSize);
// Draw using a static layout
StaticLayout layout = new StaticLayout(source, paint, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, true);
layout.draw(sTextResizeCanvas);
return layout.getWidth();
}
Change 2: Fix a EmptyStackException in the Eclipse Android Layout Editor
Under rather obscure and very precise conditions, the Layout Editor will fail to display the graphical display of the layout; it will throw an "EmptyStackException: null" exception in com.android.ide.eclipse.adt.
The conditions required are:
- create an AutoResizeTextView widget
- create a style for that widget
- specify the text item in the style; not in the widget definition
as in:
res/layout/main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<com.ajw.DemoCrashInADT.AutoResizeTextView
android:id="@+id/resizingText"
style="@style/myTextStyle" />
</LinearLayout>
res/values/myStyles.xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="myTextStyle" parent="@android:style/Widget.TextView">
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_width">fill_parent</item>
<item name="android:text">some message</item>
</style>
</resources>
With these files, selecting the Graphical Layout tab when editing main.xml
will display:
error!
EmptyStackException: null
Exception details are logged in Window > Show View > Error Log
instead of the graphical view of the layout.
To keep an already too-long story shorter, I tracked this down to the following lines (again in resizeText
):
// If there is a max text size set, use the lesser of that and the default text size
float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;
The problem is that under the specific conditions, mTextSize is never initialized; it has the value 0.
With the above, targetTextSize
is set to zero (as a result of Math.min).
That zero is passed to getTextHeight()
(and getTextWidth()
) as the textSize
argument. When it gets to
layout.draw(sTextResizeCanvas);
we get the exception.
It's more efficient to test if (mTextSize == 0)
at the beginning of resizeText()
rather than testing in getTextHeight()
and getTextWidth()
; testing earlier saves all the intervening work.
With these updates, the file (as in my crash-demo test app) is now:
//
// from: http://stackoverflow.com/questions/5033012/auto-scale-textview-text-to-fit-within-bounds
//
//
package com.ajw.DemoCrashInADT;
import android.content.Context;
import android.graphics.Canvas;
import android.text.Layout.Alignment;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.widget.TextView;
/**
* Text view that auto adjusts text size to fit within the view. If the text
* size equals the minimum text size and still does not fit, append with an
* ellipsis.
*
* 2011-10-29 changes by Alan Jay Weiner
* * change to fit both vertically and horizontally
* * test mTextSize for 0 in resizeText() to fix exception in Layout Editor
*
* @author Chase Colburn
* @since Apr 4, 2011
*/
public class AutoResizeTextView extends TextView {
// Minimum text size for this text view
public static final float MIN_TEXT_SIZE = 20;
// Interface for resize notifications
public interface OnTextResizeListener {
public void onTextResize(TextView textView, float oldSize, float newSize);
}
// Off screen canvas for text size rendering
private static final Canvas sTextResizeCanvas = new Canvas();
// Our ellipse string
private static final String mEllipsis = "...";
// Registered resize listener
private OnTextResizeListener mTextResizeListener;
// Flag for text and/or size changes to force a resize
private boolean mNeedsResize = false;
// Text size that is set from code. This acts as a starting point for
// resizing
private float mTextSize;
// Temporary upper bounds on the starting text size
private float mMaxTextSize = 0;
// Lower bounds for text size
private float mMinTextSize = MIN_TEXT_SIZE;
// Text view line spacing multiplier
private float mSpacingMult = 1.0f;
// Text view additional line spacing
private float mSpacingAdd = 0.0f;
// Add ellipsis to text that overflows at the smallest text size
private boolean mAddEllipsis = true;
// Default constructor override
public AutoResizeTextView(Context context) {
this(context, null);
}
// Default constructor when inflating from XML file
public AutoResizeTextView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
// Default constructor override
public AutoResizeTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mTextSize = getTextSize();
}
/**
* When text changes, set the force resize flag to true and reset the text
* size.
*/
@Override
protected void onTextChanged(final CharSequence text, final int start,
final int before, final int after) {
mNeedsResize = true;
// Since this view may be reused, it is good to reset the text size
resetTextSize();
}
/**
* If the text view size changed, set the force resize flag to true
*/
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
if (w != oldw || h != oldh) {
mNeedsResize = true;
}
}
/**
* Register listener to receive resize notifications
*
* @param listener
*/
public void setOnResizeListener(OnTextResizeListener listener) {
mTextResizeListener = listener;
}
/**
* Override the set text size to update our internal reference values
*/
@Override
public void setTextSize(float size) {
super.setTextSize(size);
mTextSize = getTextSize();
}
/**
* Override the set text size to update our internal reference values
*/
@Override
public void setTextSize(int unit, float size) {
super.setTextSize(unit, size);
mTextSize = getTextSize();
}
/**
* Override the set line spacing to update our internal reference values
*/
@Override
public void setLineSpacing(float add, float mult) {
super.setLineSpacing(add, mult);
mSpacingMult = mult;
mSpacingAdd = add;
}
/**
* Set the upper text size limit and invalidate the view
*
* @param maxTextSize
*/
public void setMaxTextSize(float maxTextSize) {
mMaxTextSize = maxTextSize;
requestLayout();
invalidate();
}
/**
* Return upper text size limit
*
* @return
*/
public float getMaxTextSize() {
return mMaxTextSize;
}
/**
* Set the lower text size limit and invalidate the view
*
* @param minTextSize
*/
public void setMinTextSize(float minTextSize) {
mMinTextSize = minTextSize;
requestLayout();
invalidate();
}
/**
* Return lower text size limit
*
* @return
*/
public float getMinTextSize() {
return mMinTextSize;
}
/**
* Set flag to add ellipsis to text that overflows at the smallest text size
*
* @param addEllipsis
*/
public void setAddEllipsis(boolean addEllipsis) {
mAddEllipsis = addEllipsis;
}
/**
* Return flag to add ellipsis to text that overflows at the smallest text
* size
*
* @return
*/
public boolean getAddEllipsis() {
return mAddEllipsis;
}
/**
* Reset the text to the original size
*/
public void resetTextSize() {
super.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTextSize);
mMaxTextSize = mTextSize;
}
/**
* Resize text after measuring
*/
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
if (changed || mNeedsResize) {
int widthLimit = (right - left) - getCompoundPaddingLeft()
- getCompoundPaddingRight();
int heightLimit = (bottom - top) - getCompoundPaddingBottom()
- getCompoundPaddingTop();
resizeText(widthLimit, heightLimit);
}
super.onLayout(changed, left, top, right, bottom);
}
/**
* Resize the text size with default width and height
*/
public void resizeText() {
int heightLimit = getHeight() - getPaddingBottom() - getPaddingTop();
int widthLimit = getWidth() - getPaddingLeft() - getPaddingRight();
resizeText(widthLimit, heightLimit);
}
/**
* Resize the text size with specified width and height
*
* @param width
* @param height
*/
public void resizeText(int width, int height) {
CharSequence text = getText();
// Do not resize if the view does not have dimensions or there is no
// text
// or if mTextSize has not been initialized
if (text == null || text.length() == 0 || height <= 0 || width <= 0
|| mTextSize == 0) {
return;
}
// Get the text view's paint object
TextPaint textPaint = getPaint();
// Store the current text size
float oldTextSize = textPaint.getTextSize();
// If there is a max text size set, use the lesser of that and the
// default text size
float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize)
: mTextSize;
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
int textWidth = getTextWidth(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min
// text size, incrementally try smaller sizes
while (((textHeight > height) || (textWidth > width))
&& targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
textWidth = getTextWidth(text, textPaint, width, targetTextSize);
}
// If we had reached our minimum text size and still don't fit, append
// an ellipsis
if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
// Draw using a static layout
StaticLayout layout = new StaticLayout(text, textPaint, width,
Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
layout.draw(sTextResizeCanvas);
int lastLine = layout.getLineForVertical(height) - 1;
int start = layout.getLineStart(lastLine);
int end = layout.getLineEnd(lastLine);
float lineWidth = layout.getLineWidth(lastLine);
float ellipseWidth = textPaint.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the
// ellipsis
while (width < lineWidth + ellipseWidth) {
lineWidth = textPaint.measureText(text.subSequence(start, --end + 1)
.toString());
}
setText(text.subSequence(0, end) + mEllipsis);
}
// Some devices try to auto adjust line spacing, so force default line
// spacing
// and invalidate the layout as a side effect
textPaint.setTextSize(targetTextSize);
setLineSpacing(mSpacingAdd, mSpacingMult);
// Notify the listener if registered
if (mTextResizeListener != null) {
mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
}
// Reset force resize flag
mNeedsResize = false;
}
// Set the text size of the text paint object and use a static layout to
// render text off screen before measuring
private int getTextHeight(CharSequence source, TextPaint paint, int width,
float textSize) {
// Update the text paint object
paint.setTextSize(textSize);
// Draw using a static layout
StaticLayout layout = new StaticLayout(source, paint, width,
Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, true);
layout.draw(sTextResizeCanvas);
return layout.getHeight();
}
// Set the text size of the text paint object and use a static layout to
// render text off screen before measuring
private int getTextWidth(CharSequence source, TextPaint paint, int width,
float textSize) {
// Update the text paint object
paint.setTextSize(textSize);
// Draw using a static layout
StaticLayout layout = new StaticLayout(source, paint, width,
Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, true);
layout.draw(sTextResizeCanvas);
return layout.getWidth();
}
}
A big thank you to Chase for posting the initial code. I enjoyed reading through it to see how it worked, and I'm pleased to be able to add to it.
Well, this is possible, and the other answers posted are perfectly valid, but you could take a brute force approach and prevent the default behavior of mousedown
on images. Which, is to start dragging the image.
Something like this:
window.onload = function () {
var images = document.getElementsByTagName('img');
for (var i = 0; img = images[i++];) {
img.ondragstart = function() { return false; };
}
};
Well, you pretty much gave yourself the answer. In your CSS give the containing element a min-width. If you have to support IE6 you can use the min-width-trick:
#container {
min-width:800px;
width: auto !important;
width:800px;
}
That will effectively give you 800px min-width in IE6 and any up-to-date browsers.
Neither of the posted answers worked for me. Setting position: absolute
for the child element did work however.
I don't know if my solution is best practice, but I achieved loading a bitmap with my desired scaling by using the inDensity
and inTargetDensity
options. inDensity
is 0
initially when not loading a drawable resource, so this approach is for loading non resource images.
The variables imageUri
, maxImageSideLength
and context
are parameters of my method. I posted only the method implementation without the wrapping AsyncTask for clarity.
ContentResolver resolver = context.getContentResolver();
InputStream is;
try {
is = resolver.openInputStream(imageUri);
} catch (FileNotFoundException e) {
Log.e(TAG, "Image not found.", e);
return null;
}
Options opts = new Options();
opts.inJustDecodeBounds = true;
BitmapFactory.decodeStream(is, null, opts);
// scale the image
float maxSideLength = maxImageSideLength;
float scaleFactor = Math.min(maxSideLength / opts.outWidth, maxSideLength / opts.outHeight);
// do not upscale!
if (scaleFactor < 1) {
opts.inDensity = 10000;
opts.inTargetDensity = (int) ((float) opts.inDensity * scaleFactor);
}
opts.inJustDecodeBounds = false;
try {
is.close();
} catch (IOException e) {
// ignore
}
try {
is = resolver.openInputStream(imageUri);
} catch (FileNotFoundException e) {
Log.e(TAG, "Image not found.", e);
return null;
}
Bitmap bitmap = BitmapFactory.decodeStream(is, null, opts);
try {
is.close();
} catch (IOException e) {
// ignore
}
return bitmap;
Open your .svg
file with a text editor (it's just XML), and look for something like this at the top:
<svg ... width="50px" height="50px"...
Erase width and height attributes; the defaults are 100%, so it should stretch to whatever the container allows it.
If You want to check only when scroll ended, in Vanilla JS, You can come up with a solution like this:
Super Super compact
var t
window.onresize = () => { clearTimeout(t) t = setTimeout(() => { resEnded() }, 500) }
function resEnded() { console.log('ended') }
All 3 possible combinations together (ES6)
var t
window.onresize = () => {
resizing(this, this.innerWidth, this.innerHeight) //1
if (typeof t == 'undefined') resStarted() //2
clearTimeout(t); t = setTimeout(() => { t = undefined; resEnded() }, 500) //3
}
function resizing(target, w, h) {
console.log(`Youre resizing: width ${w} height ${h}`)
}
function resStarted() {
console.log('Resize Started')
}
function resEnded() {
console.log('Resize Ended')
}
A Simply Swift,
Step 1: Create One SubClass of UITableViewCell
Step 2: Add this method to SubClass of UITableViewCell
override func layoutSubviews() {
super.layoutSubviews()
self.imageView?.frame = CGRectMake(0, 0, 10, 10)
}
Step 3: Create cell object using that SubClass in cellForRowAtIndexPath
,
Ex: let customCell:CustomCell = CustomCell(style: UITableViewCellStyle.Default, reuseIdentifier: "Cell")
Step 4: Enjoy
I used this single line of code to create a new UIImage which is scaled. Set the scale and orientation params to achieve what you want. The first line of code just grabs the image.
// grab the original image
UIImage *originalImage = [UIImage imageNamed:@"myImage.png"];
// scaling set to 2.0 makes the image 1/2 the size.
UIImage *scaledImage =
[UIImage imageWithCGImage:[originalImage CGImage]
scale:(originalImage.scale * 2.0)
orientation:(originalImage.imageOrientation)];
This can be easily done using the CSS3 Flexbox, a feature which will be used in the future(When <IE9
is completely dead) by almost every browser.
Check the Browser Compatibility Table
HTML
<div class="container">
<div class="left">
Left
</div>
<div class="center">
Center
</div>
<div class="right">
Right
</div>
</div>
CSS
.container {
display: flex;
flex-flow: row nowrap; /* Align on the same line */
justify-content: space-between; /* Equal margin between the child elements */
}
Output:
.container {_x000D_
display: flex;_x000D_
flex-flow: row nowrap; /* Align on the same line */_x000D_
justify-content: space-between; /* Equal margin between the child elements */_x000D_
}_x000D_
_x000D_
/* For Presentation, not needed */_x000D_
_x000D_
.container > div {_x000D_
background: #5F85DB;_x000D_
padding: 5px;_x000D_
color: #fff;_x000D_
font-weight: bold;_x000D_
font-family: Tahoma;_x000D_
}
_x000D_
<div class="container">_x000D_
<div class="left">_x000D_
Left_x000D_
</div>_x000D_
<div class="center">_x000D_
Center_x000D_
</div>_x000D_
<div class="right">_x000D_
Right_x000D_
</div>_x000D_
</div>
_x000D_
I had a table view inside scroll view and had to calculate tableView's height and resize it accordingly. Those are steps I've taken:
0) add a UIView to your scrollView (probably will work without this step but i did it to avoid any possible conflicts) - this will be a containr view for your table view. If you take this step , then set the views borders right to tableview's ones.
1) create a subclass of UITableView:
class IntrinsicTableView: UITableView {
override var contentSize:CGSize {
didSet {
self.invalidateIntrinsicContentSize()
}
}
override var intrinsicContentSize: CGSize {
self.layoutIfNeeded()
return CGSize(width: UIViewNoIntrinsicMetric, height: contentSize.height)
}
}
2) set class of a table view in Storyboard to IntrinsicTableView: screenshot: http://joxi.ru/a2XEENpsyBWq0A
3) Set the heightConstraint to your table view
4) drag the IBoutlet of your table to your ViewController
5) drag the IBoutlet of your table's height constraint to your ViewController
6) add this method into your ViewController:
override func viewWillLayoutSubviews() {
super.updateViewConstraints()
self.yourTableViewsHeightConstraint?.constant = self.yourTableView.intrinsicContentSize.height
}
Hope this helps
http://nodeca.github.io/pica/demo/
In modern browser you can use canvas to load/save image data. But you should keep in mind several things if you resize image on the client:
So something interesting that I found a while ago while working with canvas that might be helpful:
To resize the canvas control on its own, you need to use the height=""
and width=""
attributes (or canvas.width
/canvas.height
elements). If you use CSS to resize the canvas, it will actually stretch (i.e.: resize) the content of the canvas to fit the full canvas (rather than simply increasing or decreasing the area of the canvas.
It'd be worth a shot to try drawing the image into a canvas control with the height and width attributes set to the size of the image and then using CSS to resize the canvas to the size you're looking for. Perhaps this would use a different resizing algorithm.
It should also be noted that canvas has different effects in different browsers (and even different versions of different browsers). The algorithms and techniques used in the browsers is likely to change over time (especially with Firefox 4 and Chrome 6 coming out so soon, which will place heavy emphasis on canvas rendering performance).
In addition, you may want to give SVG a shot, too, as it likely uses a different algorithm as well.
Best of luck!
You can simply use this one line code to resize your image in visual basic .net
Public Shared Function ResizeImage(ByVal InputImage As Image) As Image
Return New Bitmap(InputImage, New Size(64, 64))
End Function
Where;
You can also simply use the jQuery plugin and package for TinyMCE it sorts out these kinds of issues.
I created a extension method that is much simpiler than the answers that are posted. and the aspect ratio is applied without cropping the image.
public static Image Resize(this Image image, int width, int height) {
var scale = Math.Min(height / (float)image.Height, width / (float)image.Width);
return image.GetThumbnailImage((int)(image.Width * scale), (int)(image.Height * scale), () => false, IntPtr.Zero);
}
Example usage:
using (var img = Image.FromFile(pathToOriginalImage)) {
using (var thumbnail = img.Resize(60, 60)){
// Here you can do whatever you need to do with thumnail
}
}
This solved my problem completely:
.gm-style-iw {
overflow: visible !important;
height: auto !important;
width: auto !important;
}
Just use percentage widths and fixed table layout:
<table>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
</table>
with
table { table-layout: fixed; }
td { width: 33%; }
Fixed table layout is important as otherwise the browser will adjust the widths as it sees fit if the contents don't fit ie the widths are otherwise a suggestion not a rule without fixed table layout.
Obviously, adjust the CSS to fit your circumstances, which usually means applying the styling only to a tables with a given class or possibly with a given ID.
Matthias' answer is mostly right but it's still not filling the entire screen as it has a small padding on each side (pointed out by @Holmes). In addition to his code, we could fix this by extending Theme.Dialog style and add some attributes like this.
<style name="MyDialog" parent="@android:style/Theme.Dialog">
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowNoTitle">true</item>
</style>
Then we simply declare Activity with theme set to MyDialog
:
<activity
android:name=".FooActivity"
android:theme="@style/MyDialog" />
I use this, and it works with all browsers:
<html>
<head>
<title>Stretched Background Image</title>
<style type="text/css">
/* Remove margins from the 'html' and 'body' tags, and ensure the page takes up full screen height. */
html, body {height:100%; margin:0; padding:0;}
/* Set the position and dimensions of the background image. */
#page-background {position:fixed; top:0; left:0; width:100%; height:100%;}
/* Specify the position and layering for the content that needs to appear in front of the background image. Must have a higher z-index value than the background image. Also add some padding to compensate for removing the margin from the 'html' and 'body' tags. */
#content {position:relative; z-index:1; padding:10px;}
</style>
<!-- The above code doesn't work in Internet Explorer 6. To address this, we use a conditional comment to specify an alternative style sheet for IE 6. -->
<!--[if IE 6]>
<style type="text/css">
html {overflow-y:hidden;}
body {overflow-y:auto;}
#page-background {position:absolute; z-index:-1;}
#content {position:static;padding:10px;}
</style>
<![endif]-->
</head>
<body>
<div id="page-background"><img src="http://www.quackit.com/pix/milford_sound/milford_sound.jpg" width="100%" height="100%" alt="Smile"></div>
<div id="content">
<h2>Stretch that Background Image!</h2>
<p>This text appears in front of the background image. This is because we've used CSS to layer the content in front of the background image. The background image will stretch to fit your browser window. You can see the image grow and shrink as you resize your browser.</p>
<p>Go on, try it - resize your browser!</p>
</div>
</body>
</html>
And old post... bit still. Resizing is one thing, but it can leave resized images uncentered, and looking a bit unorganised. So I added a few lines to the original post to add a left margin to centralise any resized images.
$(".schs_bonsai_image_slider_image").each(function()
{
var maxWidth = 787; // Max width for the image
var maxHeight = 480; // Max height for the image
var ratio = 0; // Used for aspect ratio
var width = $(this).width(); // Current image width
var height = $(this).height(); // Current image height
// Check if the current width is larger than the max
if(width > maxWidth)
{
ratio = maxWidth / width; // get ratio for scaling image
$(this).css("width", maxWidth); // Set new width
$(this).css("height", height * ratio); // Scale height based on ratio
height = height * ratio; // Reset height to match scaled image
width = width * ratio; // Reset width to match scaled image
}
// Check if current height is larger than max
if(height > maxHeight)
{
ratio = maxHeight / height; // get ratio for scaling image
$(this).css("height", maxHeight); // Set new height
$(this).css("width", width * ratio); // Scale width based on ratio
width = width * ratio; // Reset width to match scaled image
height = height * ratio; // Reset height to match scaled image
}
var newwidth = $(this).width();
var parentwidth=$(this).parent().width();
var widthdiff=(parentwidth-newwidth)/2;
$(this).css("margin-left",widthdiff);
});
A little improvement from Schnapple's version
int nLastColumn = dgv.Columns.Count - 1;
for (int i = 0; i < dgv.Columns.Count; i++)
{
if (nLastColumn == i)
{
dgv.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
}
else
{
dgv.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
}
}
for (int i = 0; i < dgv.Columns.Count; i++)
{
int colw = dgv.Columns[i].Width;
dgv.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
dgv.Columns[i].Width = colw;
}
I developed an ultimate solution for image scaling in Swift.
You can use it to resize image to fill, aspect fill or aspect fit specified size.
You can align image to center or any of four edges and four corners.
And also you can trim extra space which is added if aspect ratios of original image and target size are not equal.
enum UIImageAlignment {
case Center, Left, Top, Right, Bottom, TopLeft, BottomRight, BottomLeft, TopRight
}
enum UIImageScaleMode {
case Fill,
AspectFill,
AspectFit(UIImageAlignment)
}
extension UIImage {
func scaleImage(width width: CGFloat? = nil, height: CGFloat? = nil, scaleMode: UIImageScaleMode = .AspectFit(.Center), trim: Bool = false) -> UIImage {
let preWidthScale = width.map { $0 / size.width }
let preHeightScale = height.map { $0 / size.height }
var widthScale = preWidthScale ?? preHeightScale ?? 1
var heightScale = preHeightScale ?? widthScale
switch scaleMode {
case .AspectFit(_):
let scale = min(widthScale, heightScale)
widthScale = scale
heightScale = scale
case .AspectFill:
let scale = max(widthScale, heightScale)
widthScale = scale
heightScale = scale
default:
break
}
let newWidth = size.width * widthScale
let newHeight = size.height * heightScale
let canvasWidth = trim ? newWidth : (width ?? newWidth)
let canvasHeight = trim ? newHeight : (height ?? newHeight)
UIGraphicsBeginImageContextWithOptions(CGSizeMake(canvasWidth, canvasHeight), false, 0)
var originX: CGFloat = 0
var originY: CGFloat = 0
switch scaleMode {
case .AspectFit(let alignment):
switch alignment {
case .Center:
originX = (canvasWidth - newWidth) / 2
originY = (canvasHeight - newHeight) / 2
case .Top:
originX = (canvasWidth - newWidth) / 2
case .Left:
originY = (canvasHeight - newHeight) / 2
case .Bottom:
originX = (canvasWidth - newWidth) / 2
originY = canvasHeight - newHeight
case .Right:
originX = canvasWidth - newWidth
originY = (canvasHeight - newHeight) / 2
case .TopLeft:
break
case .TopRight:
originX = canvasWidth - newWidth
case .BottomLeft:
originY = canvasHeight - newHeight
case .BottomRight:
originX = canvasWidth - newWidth
originY = canvasHeight - newHeight
}
default:
break
}
self.drawInRect(CGRectMake(originX, originY, newWidth, newHeight))
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
}
There are examples of applying this solution below.
Gray rectangle is target site image will be resized to.
Blue circles in light blue rectangle is the image (I used circles because it's easy to see when it's scaled without preserving aspect).
Light orange color marks areas that will be trimmed if you pass trim: true
.
Aspect fit before and after scaling:
Another example of aspect fit:
Aspect fit with top alignment:
Aspect fill:
Fill:
I used upscaling in my examples because it's simpler to demonstrate but solution also works for downscaling as in question.
For JPEG compression you should use this :
let compressionQuality: CGFloat = 0.75 // adjust to change JPEG quality
if let data = UIImageJPEGRepresentation(image, compressionQuality) {
// ...
}
You can check out my gist with Xcode playground.
There's ImageJ, which boasts to be the
world's fastest pure Java image processing program
It can be used as a library in another application. It's architecture is not brilliant, but it does basic image processing tasks.
give this style to td: width: 1%;
In a word - speed. An index for up to a million rows fits in a 32-bit word, so it can be used efficiently on 32-bit processors. Function arguments that fit in a CPU register are extremely efficient, while ones that are larger require accessing memory on each function call, a far slower operation. Updating a spreadsheet can be an intensive operation involving many cell references, so speed is important. Besides, the Excel team expects that anyone dealing with more than a million rows will be using a database rather than a spreadsheet.
Has anyone considered contenteditable? No messing around with scrolling,a nd the only JS I like about it is if you plan on saving the data on blur... and apparently, it's compatible on all of the popular browsers : http://caniuse.com/#feat=contenteditable
Just style it to look like a text box, and it autosizes... Make its min-height the preferred text height and have at it.
What's cool about this approach is that you can save and tags on some of the browsers.
http://jsfiddle.net/gbutiri/v31o8xfo/
var _auto_value = '';
$(document).on('blur', '.autosave', function(e) {
var $this = $(this);
if ($this.text().trim() == '') {
$this.html('');
}
// The text is here. Do whatever you want with it.
$this.addClass('saving');
if (_auto_value !== $this.html() || $this.hasClass('error')) {
// below code is for example only.
$.ajax({
url: '/echo/json/?action=xyz_abc',
data: 'data=' + $this.html(),
type: 'post',
datatype: 'json',
success: function(d) {
console.log(d);
$this.removeClass('saving error').addClass('saved');
var k = setTimeout(function() {
$this.removeClass('saved error')
}, 500);
},
error: function() {
$this.removeClass('saving').addClass('error');
}
});
} else {
$this.removeClass('saving');
}
}).on('focus mouseup', '.autosave', function() {
var $this = $(this);
if ($this.text().trim() == '') {
$this.html('');
}
_auto_value = $this.html();
}).on('keyup', '.autosave', function(e) {
var $this = $(this);
if ($this.text().trim() == '') {
$this.html('');
}
});
_x000D_
body {
background: #3A3E3F;
font-family: Arial;
}
label {
font-size: 11px;
color: #ddd;
}
.autoheight {
min-height: 16px;
font-size: 16px;
margin: 0;
padding: 10px;
font-family: Arial;
line-height: 20px;
box-sizing: border-box;
-o-box-sizing: border-box;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
overflow: hidden;
display: block;
resize: none;
border: 0;
outline: none;
min-width: 200px;
background: #ddd;
max-height: 400px;
overflow: auto;
}
.autoheight:hover {
background: #eee;
}
.autoheight:focus {
background: #fff;
}
.autosave {
-webkit-transition: all .2s;
-moz-transition: all .2s;
transition: all .2s;
position: relative;
float: none;
}
.autoheight * {
margin: 0;
padding: 0;
}
.autosave.saving {
background: #ff9;
}
.autosave.saved {
background: #9f9;
}
.autosave.error {
background: #f99;
}
.autosave:hover {
background: #eee;
}
.autosave:focus {
background: #fff;
}
[contenteditable=true]:empty:before {
content: attr(placeholder);
color: #999;
position: relative;
top: 0px;
/*
For IE only, do this:
position: absolute;
top: 10px;
*/
cursor: text;
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<label>Your Name</label>
<div class="autoheight autosave contenteditable" contenteditable="true" placeholder="Your Name"></div>
_x000D_
calc()
.The expression calc(100vh - 30px)
represents the remaining height. Where 100vh
is the height of the browser and the usage of calc()
effectively displaces the height of the other element.
body {_x000D_
margin: 0;_x000D_
}_x000D_
.banner {_x000D_
background: #f00;_x000D_
height: 30px;_x000D_
}_x000D_
iframe {_x000D_
display: block;_x000D_
background: #000;_x000D_
border: none;_x000D_
height: calc(100vh - 30px);_x000D_
width: 100%;_x000D_
}
_x000D_
<div class="banner"></div>_x000D_
<iframe></iframe>
_x000D_
Support for calc()
here; support for viewport relative units here.
Set the display
of the common parent element to flex
, along with flex-direction: column
(assuming you want the elements to stack on top of each other). Then set flex-grow: 1
on the child iframe
element in order for it to fill the remaining space.
body {_x000D_
margin: 0;_x000D_
}_x000D_
.parent {_x000D_
display: flex;_x000D_
flex-direction: column;_x000D_
min-height: 100vh;_x000D_
}_x000D_
.parent .banner {_x000D_
background: #f00;_x000D_
width: 100%;_x000D_
height: 30px;_x000D_
}_x000D_
.parent iframe {_x000D_
background: #000;_x000D_
border: none;_x000D_
flex-grow: 1;_x000D_
}
_x000D_
<div class="parent">_x000D_
<div class="banner"></div>_x000D_
<iframe></iframe>_x000D_
</div>
_x000D_
Since this approach has less support1, I'd suggest going with the aforementioned approach.
1Though it seems to work in Chrome/FF, it doesn't work in IE (the first method works in all current browsers).
This is the easiest method i have found using prototype:
Main.html:
<html>
<head>
<script src="prototype.js"></script>
<script>
function init() {
var iframe = $(document.getElementById("iframe"));
var iframe_content = $(iframe.contentWindow.document.getElementById("iframe_content"));
var cy = iframe_content.getDimensions().height;
iframe.style.height = cy + "px";
}
</script>
</head>
<body onload="init()">
<iframe src="./content.html" id="iframe" frameBorder="0" scroll="no"></iframe>
<br>
this is the next line
</body>
</html>
content.html:
<html>
<head>
<script src="prototype.js"></script>
<style>
body {
margin: 0px;
padding: 0px;
}
</style>
</head>
<body>
<div id="iframe_content" style="max-height:200px;">
Sub content<br>
Sub content<br>
...
...
...
</div>
</body>
</html>
This seems to work (so far) in all the major browsers.
If you do not need to handle iframe content from a different domain, try this code, it will solve the problem completely and it's simple:
<script language="JavaScript">
<!--
function autoResize(id){
var newheight;
var newwidth;
if(document.getElementById){
newheight=document.getElementById(id).contentWindow.document .body.scrollHeight;
newwidth=document.getElementById(id).contentWindow.document .body.scrollWidth;
}
document.getElementById(id).height= (newheight) + "px";
document.getElementById(id).width= (newwidth) + "px";
}
//-->
</script>
<iframe src="usagelogs/default.aspx" width="100%" height="200px" id="iframe1" marginheight="0" frameborder="0" onLoad="autoResize('iframe1');"></iframe>
As rcar says, you can't without losing some quality, the best you can do in c# is:
Bitmap newImage = new Bitmap(newWidth, newHeight);
using (Graphics gr = Graphics.FromImage(newImage))
{
gr.SmoothingMode = SmoothingMode.HighQuality;
gr.InterpolationMode = InterpolationMode.HighQualityBicubic;
gr.PixelOffsetMode = PixelOffsetMode.HighQuality;
gr.DrawImage(srcImage, new Rectangle(0, 0, newWidth, newHeight));
}
document.getElementById('myDiv').style.height = 500;
This is the very basic JS code required to adjust the height of your object dynamically. I just did this very thing where I had some auto height property, but when I add some content via XMLHttpRequest
I needed to resize my parent div and this offsetheight property did the trick in IE6/7 and FF3
Here's another technique for autosizing a textarea.
Code: (plain vanilla JavaScript)
function FitToContent(id, maxHeight)
{
var text = id && id.style ? id : document.getElementById(id);
if (!text)
return;
/* Accounts for rows being deleted, pixel value may need adjusting */
if (text.clientHeight == text.scrollHeight) {
text.style.height = "30px";
}
var adjustedHeight = text.clientHeight;
if (!maxHeight || maxHeight > adjustedHeight)
{
adjustedHeight = Math.max(text.scrollHeight, adjustedHeight);
if (maxHeight)
adjustedHeight = Math.min(maxHeight, adjustedHeight);
if (adjustedHeight > text.clientHeight)
text.style.height = adjustedHeight + "px";
}
}
Demo: (uses jQuery, targets on the textarea I'm typing into right now - if you have Firebug installed, paste both samples into the console and test on this page)
$("#post-text").keyup(function()
{
FitToContent(this, document.documentElement.clientHeight)
});
note that the span & group are indexed for multi capture groups in a regex
regex_with_3_groups=r"([a-z])([0-9]+)([A-Z])"
for match in re.finditer(regex_with_3_groups, string):
for idx in range(0, 4):
print(match.span(idx), match.group(idx))
One advantage your current approach does have is that it will raise an error if multiple rows are returned by the predicate. To reproduce that you can use.
SELECT @currentTerm = currentterm,
@termID = termid,
@endDate = enddate
FROM table1
WHERE iscurrent = 1
IF( @@ROWCOUNT <> 1 )
BEGIN
RAISERROR ('Unexpected number of matching rows',
16,
1)
RETURN
END
Forever takes command line options for output:
-l LOGFILE Logs the forever output to LOGFILE
-o OUTFILE Logs stdout from child script to OUTFILE
-e ERRFILE Logs stderr from child script to ERRFILE
For example:
forever start -o out.log -e err.log my-script.js
See here for more info
As we know filter and order by are removed from ANGULAR 2 and we need to write our own, here is a good example on plunker and detailed article
It used both filter as well as orderby, here is the code for order pipe
import { Pipe, PipeTransform } from '@angular/core';
@Pipe({ name: 'orderBy' })
export class OrderrByPipe implements PipeTransform {
transform(records: Array<any>, args?: any): any {
return records.sort(function(a, b){
if(a[args.property] < b[args.property]){
return -1 * args.direction;
}
else if( a[args.property] > b[args.property]){
return 1 * args.direction;
}
else{
return 0;
}
});
};
}
I recently faced this issue. I have 3 java applications that start with 1024m or 1280m heap size. Java is looking at the available space in swap, and if there is not enough memory available, the jvm exits.
To resolve the issue, I had to end several programs that had a large amount of virtual memory allocated.
I was running on x86-64 linux with a 64-bit jvm.
Respect to Biff, here's a few tweaks that let me use the method to bounce CSV from jQuery/Post against the server and come back as a CSV prompt to the user.
[Themed(false)]
public FileContentResult DownloadCSV()
{
var csvStringData = new StreamReader(Request.InputStream).ReadToEnd();
csvStringData = Uri.UnescapeDataString(csvStringData.Replace("mydata=", ""));
return File(new System.Text.UTF8Encoding().GetBytes(csvStringData), "text/csv", "report.csv");
}
You'll need the unescape line if you are hitting this from a form with code like the following,
var input = $("<input>").attr("type", "hidden").attr("name", "mydata").val(data);
$('#downloadForm').append($(input));
$("#downloadForm").submit();
"Access violation reading location 0x00000000" means that you're derefrencing a pointer that hasn't been initialized and therefore has garbage values. Those garbage values could be anything, but usually it happens to be 0
and so you try to read from the memory address 0x0
, which the operating system detects and prevents you from doing.
Check and make sure that the array invaders[]
is what you think it should be.
Also, you don't seem to be updating i
ever - meaning that you keep placing the same Invader
object into location 0
of invaders[]
at every loop iteration.
ContextLoaderListener
is optional. Just to make a point here: you can boot up a Spring application without ever configuring ContextLoaderListener
, just a basic minimum web.xml
with DispatcherServlet
.
Here is what it would look like:
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID"
version="2.5">
<display-name>Some Minimal Webapp</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
Create a file called dispatcher-servlet.xml
and store it under WEB-INF
. Since we mentioned index.jsp
in welcome list, add this file under WEB-INF
.
dispatcher-servlet.xml
In the dispatcher-servlet.xml
define your beans:
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<bean id="bean1">
...
</bean>
<bean id="bean2">
...
</bean>
<context:component-scan base-package="com.example" />
<!-- Import your other configuration files too -->
<import resource="other-configs.xml"/>
<import resource="some-other-config.xml"/>
<!-- View Resolver -->
<bean
id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property
name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
How about this? There's no need for key codes (at least in Lion, not sure about earlier), and a subroutine simplifies the main script.
The below script will ssh to localhost as user "me", enter password "myPassw0rd" after a 1 second delay, issue ls, delay 2 seconds, and then exit.
tell application "Terminal"
activate
my execCmd("ssh me@localhost", 1)
my execCmd("myPassw0rd", 0)
my execCmd("ls", 2)
my execCmd("exit", 0)
end tell
on execCmd(cmd, pause)
tell application "System Events"
tell application process "Terminal"
set frontmost to true
keystroke cmd
keystroke return
end tell
end tell
delay pause
end execCmd
TinyXML can be best for simple XML work but if you need more features then try Xerces from the apache project. Go to the following page to read more about its features.
I have not tested this, but a multi statement function caches the result set. There may be cases where there is too much going on for the optimizer to inline the function. For example suppose you have a function that returns a result from different databases depending on what you pass as a "Company Number". Normally, you could create a view with a union all then filter by company number but I found that sometimes sql server pulls back the entire union and is not smart enough to call the one select. A table function can have logic to choose the source.
A slight tweak on @CPU-100's answer, for the local FQDN:
[System.Net.DNS]::GetHostByName($Null).HostName
I have a Samsung Galaxy S4. Although visible from Devices, my phone was not listed as connected from Android Studio. I tried a few things independently, and then together, and found that only a combination of steps fixed the issue, so this is for you if measures listed above or on another site did not work on their own.
I repeat, only all 3 of these together fixed the issue, so if some fixes you have tried haven't worked, use these 3 and it could fix the problem for you. Best of luck.
There are helper classes in bootstrap 3 with contextual colors please use these classes in html attributes.
<p class="text-muted">...</p>
<p class="text-primary">...</p>
<p class="text-success">...</p>
<p class="text-info">...</p>
<p class="text-warning">...</p>
<p class="text-danger">...</p>
Reference: http://getbootstrap.com/css/#type
Based on what I read from different sources:
An await
expression does not block the thread on which it is executing. Instead, it causes the compiler to sign up the rest of the async
method as a continuation on the awaited task. Control then returns to the caller of the async
method. When the task completes, it invokes its continuation, and execution of the async
method resumes where it left off.
To wait for a single task
to complete, you can call its Task.Wait
method. A call to the Wait
method blocks the calling thread until the single class instance has completed execution. The parameterless Wait()
method is used to wait unconditionally until a task completes. The task simulates work by calling the Thread.Sleep
method to sleep for two seconds.
This article is also a good read.
Maybe std::ostream_iterator
and std::ostringstream
:
#include <vector>
#include <string>
#include <algorithm>
#include <sstream>
#include <iterator>
#include <iostream>
int main()
{
std::vector<int> vec;
vec.push_back(1);
vec.push_back(4);
vec.push_back(7);
vec.push_back(4);
vec.push_back(9);
vec.push_back(7);
std::ostringstream oss;
if (!vec.empty())
{
// Convert all but the last element to avoid a trailing ","
std::copy(vec.begin(), vec.end()-1,
std::ostream_iterator<int>(oss, ","));
// Now add the last element with no delimiter
oss << vec.back();
}
std::cout << oss.str() << std::endl;
}
From javadocs
next() Returns the next token if it matches the pattern constructed from the specified string. nextLine() Advances this scanner past the current line and returns the input that was skipped.
Which one you choose depends which suits your needs best. If it were me reading a whole file I would go for nextLine until I had all the file.
pluck(column_name)
This method is designed to perform select by a single column as direct SQL query Returns Array with values of the specified column name The values has same data type as column.
Examples:
Person.pluck(:id) # SELECT people.id FROM people
Person.uniq.pluck(:role) # SELECT DISTINCT role FROM people
Person.where(:confirmed => true).limit(5).pluck(:id)
see http://api.rubyonrails.org/classes/ActiveRecord/Calculations.html#method-i-pluck
Its introduced rails 3.2 onwards and accepts only single column. In rails 4, it accepts multiple columns
substring().
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html
The Adjusted R-squared is close to, but different from, the value of R2. Instead of being based on the explained sum of squares SSR and the total sum of squares SSY, it is based on the overall variance (a quantity we do not typically calculate), s2T = SSY/(n - 1) and the error variance MSE (from the ANOVA table) and is worked out like this: adjusted R-squared = (s2T - MSE) / s2T.
This approach provides a better basis for judging the improvement in a fit due to adding an explanatory variable, but it does not have the simple summarizing interpretation that R2 has.
If I haven't made a mistake, you should verify the values of adjusted R-squared and R-squared as follows:
s2T <- sum(anova(v.lm)[[2]]) / sum(anova(v.lm)[[1]])
MSE <- anova(v.lm)[[3]][2]
adj.R2 <- (s2T - MSE) / s2T
On the other side, R2 is: SSR/SSY, where SSR = SSY - SSE
attach(v)
SSE <- deviance(v.lm) # or SSE <- sum((epm - predict(v.lm,list(n_days)))^2)
SSY <- deviance(lm(epm ~ 1)) # or SSY <- sum((epm-mean(epm))^2)
SSR <- (SSY - SSE) # or SSR <- sum((predict(v.lm,list(n_days)) - mean(epm))^2)
R2 <- SSR / SSY
The accepted answer explained the problem well enough. However, the more Numpythonic approach for applying multiple conditions is to use numpy logical functions. In this case, you can use np.logical_and
:
np.where(np.logical_and(np.greater_equal(dists,r),np.greater_equal(dists,r + dr)))
Set to null. Then there are no references anymore and the object will become eligible for Garbage Collection. GC will automatically remove the object from the heap.
size_t should be defined in your standard library's headers. In my experience, it usually is simply a typedef to unsigned int. The point, though, is that it doesn't have to be. Types like size_t allow the standard library vendor the freedom to change its underlying data types if appropriate for the platform. If you assume size_t is always unsigned int (via casting, etc), you could run into problems in the future if your vendor changes size_t to be e.g. a 64-bit type. It is dangerous to assume anything about this or any other library type for this reason.
The following command will add all the lines(first field of the awk output)
awk '{s+=$1} END {print s}' filename
A simple alternative that allows you to determine dynamically the field on which the sorting is based:
$order_by = 'name';
usort($your_data, function ($a, $b) use ($order_by)
{
return strcmp($a->{$order_by}, $b->{$order_by});
});
This is based on the Closure class, which allows anonymous functions. It is available since PHP 5.3.
If by whitespaces you mean the ' ' character, my suggestion would just be a search/replace. As the others have hinted, set list
changes non printing characters to a visible character that's configured in listchars
.
To explicitly show spaces as some other character, something similar to the below should do the trick:
:%s/ /¦/g
Then just undo the change to go back again.
(to get the ¦ I pressed this exact key sequence: :%s/ /CTRL-KFB/g)
You actually need to understand the ApplicationContext
. It is an interface and it will have different implementations based on configuration.
As you are using new ClassPathXmlApplicationContext("applicationContext.xml");
, kindly pay attention to initial right hand-side , it says ClassPathXmlApplicationContext , so the XML must be present in the class path.
So drag your applicationContext.xml wherever it is to the src folder.
Gist: new ClassPathXmlApplicationContext as the name [ClassPathXml]will look for the xml file in the src folder of your project, so drag your xml file there only.
? ClassPathXmlApplicationContext
—Loads a context definition from an XML
file located in the classpath, treating context definition files as classpath
resources.
? FileSystemXmlApplicationContext
—Loads a context definition from an XML
file in the file system.
? XmlWebApplicationContext
—Loads context definitions from an XML file contained
within a web application.
You can modify the .form-control:focus
color without altering the bootstrap style in this way:
.form-control:focus {
border-color: #28a745;
box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}
.form-control:focus
and copy the parameters that you want to modify into your css. In this case is border-color
and box-shadow
.border-color
. In this case I choose to pick up the same green the bootstrap uses for their .btn-success
class, by searching for that particular class in the bootstrap.css page mentioned in the step 1.box-shadow
parameter without altering the fourth RGBA parameter (0.25) that bootstrap has for transparency.Right-click the title-bar icon of the Explorer window. You'll get the current folder's context menu, where you'll find the "command window here" item.
(Note that to see that menu item, you need to have the corresponding "power toy" installed, or you can create the right registry keys yourself to add that item to folders' context menus.)
Below is a fully functional example of what I believe you're trying to do (with a functional snippet).
Based on your question, you seem to be modifying 1 property in state
for all of your elements. That's why when you click on one, all of them are being changed.
In particular, notice that the state tracks an index of which element is active. When MyClickable
is clicked, it tells the Container
its index, Container
updates the state
, and subsequently the isActive
property of the appropriate MyClickable
s.
class Container extends React.Component {_x000D_
state = {_x000D_
activeIndex: null_x000D_
}_x000D_
_x000D_
handleClick = (index) => this.setState({ activeIndex: index })_x000D_
_x000D_
render() {_x000D_
return <div>_x000D_
<MyClickable name="a" index={0} isActive={ this.state.activeIndex===0 } onClick={ this.handleClick } />_x000D_
<MyClickable name="b" index={1} isActive={ this.state.activeIndex===1 } onClick={ this.handleClick }/>_x000D_
<MyClickable name="c" index={2} isActive={ this.state.activeIndex===2 } onClick={ this.handleClick }/>_x000D_
</div>_x000D_
}_x000D_
}_x000D_
_x000D_
class MyClickable extends React.Component {_x000D_
handleClick = () => this.props.onClick(this.props.index)_x000D_
_x000D_
render() {_x000D_
return <button_x000D_
type='button'_x000D_
className={_x000D_
this.props.isActive ? 'active' : 'album'_x000D_
}_x000D_
onClick={ this.handleClick }_x000D_
>_x000D_
<span>{ this.props.name }</span>_x000D_
</button>_x000D_
}_x000D_
}_x000D_
_x000D_
ReactDOM.render(<Container />, document.getElementById('app'))
_x000D_
button {_x000D_
display: block;_x000D_
margin-bottom: 1em;_x000D_
}_x000D_
_x000D_
.album>span:after {_x000D_
content: ' (an album)';_x000D_
}_x000D_
_x000D_
.active {_x000D_
font-weight: bold;_x000D_
}_x000D_
_x000D_
.active>span:after {_x000D_
content: ' ACTIVE';_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.6.1/react.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.6.1/react-dom.min.js"></script>_x000D_
<div id="app"></div>
_x000D_
In response to a comment about a "loop" version, I believe the question is about rendering an array of MyClickable
elements. We won't use a loop, but map, which is typical in React + JSX. The following should give you the same result as above, but it works with an array of elements.
// New render method for `Container`
render() {
const clickables = [
{ name: "a" },
{ name: "b" },
{ name: "c" },
]
return <div>
{ clickables.map(function(clickable, i) {
return <MyClickable key={ clickable.name }
name={ clickable.name }
index={ i }
isActive={ this.state.activeIndex === i }
onClick={ this.handleClick }
/>
} )
}
</div>
}
jcomeau@intrepid:~$ mystring="one two three four five"
jcomeau@intrepid:~$ echo "string length: ${#mystring}"
string length: 23
link Couting characters, words, lenght of the words and total lenght in a sentence
Try this one:
<button class="button" onclick="$('#target').toggle();">
Show/Hide
</button>
<div id="target" style="display: none">
Hide show.....
</div>
You might want to check out the angular-ui directive ui-if
if you just want to remove the ul
from the DOM when the list is empty:
<ul ui-if="!!events.length">
<li ng-repeat="event in events">{{event.title}}</li>
</ul>
You can use the npm modules jsdom and htmlparser to create and parse a DOM in Node.JS.
Other options include:
Out of all these options, I prefer using the Node.js option, because it uses the standard W3C DOM accessor methods and I can reuse code on both the client and server. I wish BeautifulSoup's methods were more similar to the W3C dom, and I think converting your HTML to XHTML to write XSLT is just plain sadistic.
You may find an answer with this example : errorbar_demo_features.py
"""
Demo of errorbar function with different ways of specifying error bars.
Errors can be specified as a constant value (as shown in `errorbar_demo.py`),
or as demonstrated in this example, they can be specified by an N x 1 or 2 x N,
where N is the number of data points.
N x 1:
Error varies for each point, but the error values are symmetric (i.e. the
lower and upper values are equal).
2 x N:
Error varies for each point, and the lower and upper limits (in that order)
are different (asymmetric case)
In addition, this example demonstrates how to use log scale with errorbar.
"""
import numpy as np
import matplotlib.pyplot as plt
# example data
x = np.arange(0.1, 4, 0.5)
y = np.exp(-x)
# example error bar values that vary with x-position
error = 0.1 + 0.2 * x
# error bar values w/ different -/+ errors
lower_error = 0.4 * error
upper_error = error
asymmetric_error = [lower_error, upper_error]
fig, (ax0, ax1) = plt.subplots(nrows=2, sharex=True)
ax0.errorbar(x, y, yerr=error, fmt='-o')
ax0.set_title('variable, symmetric error')
ax1.errorbar(x, y, xerr=asymmetric_error, fmt='o')
ax1.set_title('variable, asymmetric error')
ax1.set_yscale('log')
plt.show()
Which plots this:
I would recommend EasyInstall, a package management application for Python.
Once you've installed EasyInstall, you should be able to go to a command window and type:
easy_install simplejson
This may require putting easy_install.exe on your PATH first, I don't remember if the EasyInstall setup does this for you (something like C:\Python25\Scripts
).
When you write a lambda expression, the argument list to the left of ->
can be either a parenthesized argument list (possibly empty), or a single identifier without any parentheses. But in the second form, the identifier cannot be declared with a type name. Thus:
this.stops.stream().filter(Stop s-> s.getStation().getName().equals(name));
is incorrect syntax; but
this.stops.stream().filter((Stop s)-> s.getStation().getName().equals(name));
is correct. Or:
this.stops.stream().filter(s -> s.getStation().getName().equals(name));
is also correct if the compiler has enough information to figure out the types.
The two queries express the same question. Apparently the query optimizer chooses two different execution plans. My guess would be that the distinct
approach is executed like:
business_key
values to a temporary tableThe group by
could be executed like:
business key
in a hashtableThe first method optimizes for memory usage: it would still perform reasonably well when part of the temporary table has to be swapped out. The second method optimizes for speed, but potentially requires a large amount of memory if there are a lot of different keys.
Since you either have enough memory or few different keys, the second method outperforms the first. It's not unusual to see performance differences of 10x or even 100x between two execution plans.
Use this line to make this work while using the modal:true option.
open: function (type, data) {
$('.ui-widget-overlay').appendTo("form"); $(this).parent().appendTo("form");
},
I found the solution.
dim bExists
ssig="Unable to open registry key"
set wshShell= Wscript.CreateObject("WScript.Shell")
strKey = "HKEY_USERS\.Default\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Digest\"
on error resume next
present = WshShell.RegRead(strKey)
if err.number<>0 then
if right(strKey,1)="\" then 'strKey is a registry key
if instr(1,err.description,ssig,1)<>0 then
bExists=true
else
bExists=false
end if
else 'strKey is a registry valuename
bExists=false
end if
err.clear
else
bExists=true
end if
on error goto 0
if bExists=vbFalse then
wscript.echo strKey & " does not exist."
else
wscript.echo strKey & " exists."
end if
Java's equivalent of ternary operator
a ? b : c
is a simple IF in Kotlin in one line
if(a) b else c
there is no ternary operator (condition ? then : else), because ordinary if works fine in this role.
https://kotlinlang.org/docs/reference/control-flow.html#if-expression
Special case for Null comparison
you can use the Elvis operator
if ( a != null ) a else b
// equivalent to
a ?: b
.
(dot) files are hidden by default on Unix/Linux systems. Most likely, if you know they are .htaccess
files, then they are probably in the root folder for the website.
If you are using a command line (terminal) to access, then they will only show up if you use:
ls -a
If you are using a GUI application, look for a setting to "show hidden files" or something similar.
If you still have no luck, and you are on a terminal, you can execute these commands to search the whole system (may take some time):
cd /
find . -name ".htaccess"
This will list out any files it finds with that name.
I would recommend not to use HTTP authentication with custom scheme names. If you feel that you have something of generic use, you can define a new scheme, though. See http://greenbytes.de/tech/webdav/draft-ietf-httpbis-p7-auth-latest.html#rfc.section.2.3 for details.
using System;
using System.Security;
class Sample {
static void Main() {
string text = "Escape characters : < > & \" \'";
string xmlText = SecurityElement.Escape(text);
//output:
//Escape characters : < > & " '
Console.WriteLine(xmlText);
}
}
If you get code behind, use some like this
MyCustomObject myObject = new MyCustomObject();
myObject.name='try';
//OBJECT -> JSON
var javaScriptSerializer = new System.Web.Script.Serialization.JavaScriptSerializer();
string myObjectJson = javaScriptSerializer.Serialize(myObject);
//return JSON
Response.Clear();
Response.ContentType = "application/json; charset=utf-8";
Response.Write(myObjectJson );
Response.End();
So you return a json object serialized with all attributes of MyCustomObject.
I too was looking for this for Facebook reasons and none of the answers given so far worked as needed or are too complicated.
@Request.Url.GetLeftPart(UriPartial.Path)
Gets the full protocol, host and path "without" the querystring. Also includes the port if you are using something other than the default 80.
These days we don't have to call the constructor inside the component - we can directly call state={something:""}
, otherwise previously first we have do declare constructor with super()
to inherit every thing from React.Component
class
then inside constructor we initialize our state.
If using React.createClass
then define initialize state with the getInitialState
method.
df = pd.read_csv('filename.csv', sep='\t', header=0)
You can load the tsv file directly into pandas data frame by specifying delimitor and header.
find
command.In GNU find
, you can use -execdir
parameter:
find . -type d -execdir realpath "{}" ';'
or by using -exec
parameter:
find . -type d -exec sh -c 'cd -P "$0" && pwd -P' {} \;
or with xargs
command:
find . -type d -print0 | xargs -0 -L1 sh -c 'cd "$0" && pwd && echo Do stuff'
Or using for loop:
for d in */; { echo "$d"; }
For recursivity try extended globbing (**/
) instead (enable by: shopt -s extglob
).
For more examples, see: How to go to each directory and execute a command? at SO
The problem was that you opened the Node.js repl while everyone automatically assumed you were in the command prompt. For what it's worth you can run a javascript file from the repl with the .load
command. For example:
.load c:/users/username/documents/script.js
The same command can also be used in the command prompt if you first start node inside the command prompt by entering node
with no arguments (assuming node is in PATH).
I find it fascinating that 1)everyone assumed you were in the command prompt rather than repl, 2)no one seems to know about .load
, and 3)this has 273 upvotes, proving that a lot of other node.js beginners are similarly confused.
You will need something more that a http request to interact with a WCF service UNLESS your WCF service has a REST interface. Either look for a SOAP web service API that runs on android or make your service RESTful. You will need .NET 3.5 SP1 to do WCF REST services:
You cannot cast an int to a char* to get a string. Try this:
std::ostringstream sstream;
sstream << "select logged from login where id = " << ClientID;
std::string query = sstream.str();
It is indeed probably allocated from the heap, but without the sources there is no way of knowing.
The typical implementation (taken from some code I have in emacs already) would be:
Singleton * Singleton::getInstance() {
if (!instance) {
instance = new Singleton();
};
return instance;
};
...and rely on the program going out of scope to clean up afterwards.
If you work on a platform where cleanup must be done manually, I'd probably add a manual cleanup routine.
Another issue with doing it this way is that it isn't thread-safe. In a multithreaded environment, two threads could get through the "if" before either has a chance to allocate the new instance (so both would). This still isn't too big of a deal if you are relying on program termination to clean up anyway.
Your getting the error because you're probably doing it on your Local server environment. You need to skip the certificates check when the cURL call is made. For that just add the following options
curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($c, CURLOPT_SSL_VERIFYHOST, 0);
As this is the first result on google and there's no C++20 answer yet, here's how to use std::chrono to do this:
#include <chrono>
//...
using namespace std::chrono;
int64_t timestamp = duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count();
In versions of C++ before 20, system_clock's epoch being Unix epoch is a de-facto convention, but it's not standardized. If you're not on C++20, use at your own risk.
Fontawesome has a perfect solution to this.
I implemented the same. just on your main .css file add this
.gi-2x{font-size: 2em;}
.gi-3x{font-size: 3em;}
.gi-4x{font-size: 4em;}
.gi-5x{font-size: 5em;}
In your example you just have to do this.
<div class = "jumbotron">
<span class="glyphicon glyphicon-globe gi-5x"></span>
</div>
In Year 2019, we can use Javascript's ES6 Spread syntax to do it concisely and efficiently
data = [...data, {"label": 2, "value": 13}]
Examples
var data = [_x000D_
{"label" : "1", "value" : 12},_x000D_
{"label" : "1", "value" : 12},_x000D_
{"label" : "1", "value" : 12},_x000D_
];_x000D_
_x000D_
data = [...data, {"label" : "2", "value" : 14}] _x000D_
console.log(data)
_x000D_
For your case (i know it was in 2011), we can do it with map() & forEach() like below
var lab = ["1","2","3","4"];_x000D_
var val = [42,55,51,22];_x000D_
_x000D_
//Using forEach()_x000D_
var data = [];_x000D_
val.forEach((v,i) => _x000D_
data= [...data, {"label": lab[i], "value":v}]_x000D_
)_x000D_
_x000D_
//Using map()_x000D_
var dataMap = val.map((v,i) => _x000D_
({"label": lab[i], "value":v})_x000D_
)_x000D_
_x000D_
console.log('data: ', data);_x000D_
console.log('dataMap : ', dataMap);
_x000D_
In a class you might call it like this:
public static string GetIPAddress(HttpRequestBase request)
{
string ip;
try
{
ip = request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (!string.IsNullOrEmpty(ip))
{
if (ip.IndexOf(",") > 0)
{
string[] ipRange = ip.Split(',');
int le = ipRange.Length - 1;
ip = ipRange[le];
}
} else
{
ip = request.UserHostAddress;
}
} catch { ip = null; }
return ip;
}
I used this in a razor app with great results.
Try to do...
DELIMITER $$
CREATE TRIGGER aumentarsalario
BEFORE INSERT
ON empregados
FOR EACH ROW
BEGIN
if (NEW.SALARIO < 900) THEN
set NEW.SALARIO = NEW.SALARIO + (NEW.SALARIO * 0.1);
END IF;
END $$
DELIMITER ;
$file = file("links.txt");
print_r($file);
This will be accept the txt file as array. So write anything to the links.txt file (use one line for one element) after, run this page :) your array will be $file
If the repository is on GitHub, you can use the open source Android app Octodroid which displays the size of the repository by default.
For example, with the mptcp repository:
Disclaimer: I didn't create Octodroid.
Starting with Spring Security version 3.2, the custom functionality that has been implemented by some of the older answers, exists out of the box in the form of the @AuthenticationPrincipal
annotation that is backed by AuthenticationPrincipalArgumentResolver
.
An simple example of it's use is:
@Controller
public class MyController {
@RequestMapping("/user/current/show")
public String show(@AuthenticationPrincipal CustomUser customUser) {
// do something with CustomUser
return "view";
}
}
CustomUser needs to be assignable from authentication.getPrincipal()
Here are the corresponding Javadocs of AuthenticationPrincipal and AuthenticationPrincipalArgumentResolver
I think that you're stuck with the workaround you mentioned in your edit.
I would start by converting every formula on the sheet to text roughly like this:
Dim r As Range
For Each r In Worksheets("Sheet1").UsedRange
If (Left$(r.Formula, 1) = "=") Then
r.Formula = "'ZZZ" & r.Formula
End If
Next r
where the 'ZZZ
uses the '
to signify a text value and the ZZZ
as a value that we can look for when we want to convert the text back to being a formula. Obviously if any of your cells actually start with the text ZZZ
then change the ZZZ
value in the VBA macro to something else
When the re-arranging is complete, I would then convert the text back to a formula like this:
For Each r In Worksheets("Sheet1").UsedRange
If (Left$(r.Formula, 3) = "ZZZ") Then
r.Formula = Mid$(r.Formula, 4)
End If
Next r
One real downside to this method is that you can't see the results of any formula while you are re-arranging. You may find that when you convert back from text to formula that you have a slew of #REF
errors for example.
It might be beneficial to work on this in stages and convert back to formulas every so often to check that no catastrophes have occurred
Just to clarify what moonlightcheese stated: To trigger a button click event through code in Android provide the following:
buttonName.performClick();
There is a benefit of private methods absence. You can move the logic that you intended to hide to the separate class and use it as delegate. In this case you can mark delegate object as private and it will not be visible from outside. Moving logic to the separate class (maybe several) makes better design of your project. Cause your classes become simpler and your methods are grouped in classes with proper names.
The easiest way would be to create a new (simple) Maven project using the "new project" wizard. You can then migrate your source into the Maven folder structure + the auto generated POM file.
Use android vollley, it is very fast and you can betterm manipulate requests. Send post request using Volley and receive in PHP
Basically, you will create a map with key-value params for the php request(POST/GET), the php will do the desired processing and you will return the data as JSON(json_encode()). Then you can either parse the JSON as needed or use GSON from Google to let it do the parsing.
flash message after redirect will available in controller not in view. to show in view get in controller's action and pass it view
This one use HTML5 localStorage
to store active tab
$('a[data-toggle="tab"]').on('shown.bs.tab', function(e) {
localStorage.setItem('activeTab', $(e.target).attr('href'));
});
var activeTab = localStorage.getItem('activeTab');
if (activeTab) {
$('#navtab-container a[href="' + activeTab + '"]').tab('show');
}
ref: http://www.tutorialrepublic.com/faq/how-to-keep-the-current-tab-active-on-page-reload-in-bootstrap.php https://www.w3schools.com/bootstrap/bootstrap_ref_js_tab.asp
If your array of objects are complex like:
$scope.friends = [{ name: John , uuid: 1234}, {name: Joe, uuid, 5678}];
And your current model was set to something like:
$scope.user.friend = {name:John, uuid: 1234};
It helped to use the track by
function on uuid (or any unique field), as long as the ng-model="user.friend" also has a uuid:
<select ng-model="user.friend"
ng-options="friend as friend.name for friend in friends track by friend.uuid">
</select>
When just a single result is needed, then no loop should be used. Just fetch the row right away.
In case you need to fetch the entire row into associative array:
$row = $result->fetch_assoc();
in case you need just a single value
$row = $result->fetch_row();
$value = $row[0] ?? false;
The last example will return the first column from the first returned row, or false
if no row was returned. It can be also shortened to a single line,
$value = $result->fetch_row()[0] ?? false;
Below are complete examples for different use cases
When variables are to be used in the query, then a prepared statement must be used. For example, given we have a variable $id
:
$query = "SELECT ssfullname, ssemail FROM userss WHERE ud=?";
$stmt = $conn->prepare($query);
$stmt->bind_param("s", $id);
$stmt->execute()
$result = $stmt->get_result();
$row = $result->fetch_assoc();
// in case you need just a single value
$query = "SELECT count(*) FROM userss WHERE id=?";
$stmt = $conn->prepare($query);
$stmt->bind_param("s", $id);
$stmt->execute()
$result = $stmt->get_result();
$value = $result->fetch_row()[0] ?? false;
The detailed explanation of the above process can be found in my article. As to why you must follow it is explained in this famous question
In your case, where no variables to be used in the query, you can use the query()
method:
$query = "SELECT ssfullname, ssemail FROM userss ORDER BY ssid";
$result = $conn->query($query);
// in case you need an array
$row = $result->fetch_assoc();
// OR in case you need just a single value
$value = $result->fetch_row()[0] ?? false;
By the way, although using raw API while learning is okay, consider using some database abstraction library or at least a helper function in the future:
// using a helper function
$sql = "SELECT email FROM users WHERE id=?";
$value = prepared_select($conn, $sql, [$id])->fetch_row[0] ?? false;
// using a database helper class
$email = $db->getCol("SELECT email FROM users WHERE id=?", [$id]);
As you can see, although a helper function can reduce the amount of code, a class' method could encapsulate all the repetitive code inside, making you to write only meaningful parts - the query, the input parameters and the desired result format (in the form of the method's name).
This will do it:
while d:
k, v = d.popitem()
# now use k and v ...
A dictionary in boolean context is False if empty, True otherwise.
There is no "first" item in a dictionary, because dictionaries aren't ordered. But popitem will remove and return some item for you each time.
Why it is hard
Popular font formats like TrueType and OpenType are vector outline formats: they use Bezier curves to define the boundary of the letter.
Transforming those formats into arrays of pixels (rasterization) is too specific and out of OpenGL's scope, specially because OpenGl does not have non-straight primitives (e.g. see Why is there no circle or ellipse primitive in OpenGL?)
The easiest approach is to first raster fonts ourselves on the CPU, and then give the array of pixels to OpenGL as a texture.
OpenGL then knows how to deal with arrays of pixels through textures very well.
Texture atlas
We could raster characters for every frame and re-create the textures, but that is not very efficient, specially if characters have a fixed size.
The more efficient approach is to raster all characters you plan on using and cram them on a single texture.
And then transfer that to the GPU once, and use it texture with custom uv coordinates to choose the right character.
This approach is called a texture atlas and it can be used not only for textures but also other repeatedly used textures, like tiles in a 2D game or web UI icons.
The Wikipedia picture of the full texture, which is itself taken from freetype-gl, illustrates this well:
I suspect that optimizing character placement to the smallest texture problem is an NP-hard problem, see: What algorithm can be used for packing rectangles of different sizes into the smallest rectangle possible in a fairly optimal way?
The same technique is used in web development to transmit several small images (like icons) at once, but there it is called "CSS Sprites": https://css-tricks.com/css-sprites/ and are used to hide the latency of the network instead of that of the CPU / GPU communication.
Non-CPU raster methods
There also exist methods which don't use the CPU raster to textures.
CPU rastering is simple because it uses the GPU as little as possible, but we also start thinking if it would be possible to use the GPU efficiency further.
This FOSDEM 2014 video explains other existing techniques:
Fonts inside of the 3D geometry with perspective
Rendering fonts inside of the 3D geometry with perspective (compared to an orthogonal HUD) is much more complicated, because perspective could make one part of the character much closer to the screen and larger than the other, making an uniform CPU discretization (e.g. raster, tesselation) look bad on the close part. This is actually an active research topic:
Distance fields are one of the popular techniques now.
The examples that follow were all tested on Ubuntu 15.10.
Because this is a complex problem as discussed previously, most examples are large, and would blow up the 30k char limit of this answer, so just clone the respective Git repositories to compile.
They are all fully open source however, so you can just RTFS.
FreeType solutions
FreeType looks like the dominant open source font rasterization library, so it would allow us to use TrueType and OpenType fonts, making it the most elegant solution.
https://github.com/rougier/freetype-gl
Was a set of examples OpenGL and freetype, but is more or less evolving into a library that does it and exposes a decent API.
In any case, it should already be possible to integrate it on your project by copy pasting some source code.
It provides both texture atlas and distance field techniques out of the box.
Demos under: https://github.com/rougier/freetype-gl/tree/master/demos
Does not have a Debian package, and it a pain to compile on Ubuntu 15.10: https://github.com/rougier/freetype-gl/issues/82#issuecomment-216025527 (packaging issues, some upstream), but it got better as of 16.10.
Does not have a nice installation method: https://github.com/rougier/freetype-gl/issues/115
Generates beautiful outputs like this demo:
libdgx https://github.com/libgdx/libgdx/tree/1.9.2/extensions/gdx-freetype
Examples / tutorials:
Other font rasterizers
Those seem less good than FreeType, but may be more lightweight:
Anton's OpenGL 4 Tutorials example 26 "Bitmap fonts"
The font was created by the author manually and stored in a single .png
file. Letters are stored in an array form inside the image.
This method is of course not very general, and you would have difficulties with internationalization.
Build with:
make -f Makefile.linux64
Output preview:
opengl-tutorial chapter 11 "2D fonts"
Textures are generated from DDS files.
The tutorial explains how the DDS files were created, using CBFG and Paint.Net.
Output preview:
For some reason Suzanne is missing for me, but the time counter works fine: https://github.com/opengl-tutorials/ogl/issues/15
FreeGLUT
GLUT has glutStrokeCharacter
and FreeGLUT is open source...
https://github.com/dcnieho/FreeGLUT/blob/FG_3_0_0/src/fg_font.c#L255
OpenGLText
https://github.com/tlorach/OpenGLText
TrueType raster. By NVIDIA employee. Aims for reusability. Haven't tried it yet.
ARM Mali GLES SDK Sample
http://malideveloper.arm.com/resources/sample-code/simple-text-rendering/ seems to encode all characters on a PNG, and cut them from there.
SDL_ttf
Source: https://github.com/cirosantilli/cpp-cheat/blob/d36527fe4977bb9ef4b885b1ec92bd0cd3444a98/sdl/ttf.c
Lives in a separate tree to SDL, and integrates easily.
Does not provide a texture atlas implementation however, so performance will be limited: How to render fonts and text with SDL2 efficiently?
Related threads
data = """a,b,c
d,e,f
g,h,i
j,k,l"""
print(data.split()) # ['a,b,c', 'd,e,f', 'g,h,i', 'j,k,l']
str.split
, by default, splits by all the whitespace characters. If the actual string has any other whitespace characters, you might want to use
print(data.split("\n")) # ['a,b,c', 'd,e,f', 'g,h,i', 'j,k,l']
Or as @Ashwini Chaudhary suggested in the comments, you can use
print(data.splitlines())
window.open(skey, "_blank", "toolbar=1, scrollbars=1, resizable=1, width=" + 1015 + ", height=" + 800);
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.with-nav-tabs.panel-warning .nav-tabs>li.dropdown .dropdown-menu>.active>a,_x000D_
.with-nav-tabs.panel-warning .nav-tabs>li.dropdown .dropdown-menu>.active>a:hover,_x000D_
.with-nav-tabs.panel-warning .nav-tabs>li.dropdown .dropdown-menu>.active>a:focus {_x000D_
color: #fff;_x000D_
background-color: #8a6d3b;_x000D_
}_x000D_
_x000D_
_x000D_
/********************************************************************/_x000D_
_x000D_
_x000D_
/*** PANEL DANGER ***/_x000D_
_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li>a,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li>a:hover,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li>a:focus {_x000D_
color: #a94442;_x000D_
}_x000D_
_x000D_
.with-nav-tabs.panel-danger .nav-tabs>.open>a,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>.open>a:hover,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>.open>a:focus,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li>a:hover,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li>a:focus {_x000D_
color: #a94442;_x000D_
background-color: #ebccd1;_x000D_
border-color: transparent;_x000D_
}_x000D_
_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.active>a,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.active>a:hover,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.active>a:focus {_x000D_
color: #a94442;_x000D_
background-color: #fff;_x000D_
border-color: #ebccd1;_x000D_
border-bottom-color: transparent;_x000D_
}_x000D_
_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.dropdown .dropdown-menu {_x000D_
background-color: #f2dede;_x000D_
/* bg color */_x000D_
border-color: #ebccd1;_x000D_
/* border color */_x000D_
}_x000D_
_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.dropdown .dropdown-menu>li>a {_x000D_
color: #a94442;_x000D_
/* normal text color */_x000D_
}_x000D_
_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.dropdown .dropdown-menu>li>a:hover,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.dropdown .dropdown-menu>li>a:focus {_x000D_
background-color: #ebccd1;_x000D_
/* hover bg color */_x000D_
}_x000D_
_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.dropdown .dropdown-menu>.active>a,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.dropdown .dropdown-menu>.active>a:hover,_x000D_
.with-nav-tabs.panel-danger .nav-tabs>li.dropdown .dropdown-menu>.active>a:focus {_x000D_
color: #fff;_x000D_
/* active text color */_x000D_
background-color: #a94442;_x000D_
/* active bg color */_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">_x000D_
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>_x000D_
<!------ Include the above in your HEAD tag ---------->_x000D_
_x000D_
<div class="container">_x000D_
<div class="page-header">_x000D_
<h1>Panels with nav tabs.<span class="pull-right label label-default">:)</span></h1>_x000D_
</div>_x000D_
<div class="row">_x000D_
<div class="col-md-6">_x000D_
<div class="panel with-nav-tabs panel-default">_x000D_
<div class="panel-heading">_x000D_
<ul class="nav nav-tabs">_x000D_
<li class="active"><a href="#tab1default" data-toggle="tab">Default 1</a></li>_x000D_
<li><a href="#tab2default" data-toggle="tab">Default 2</a></li>_x000D_
<li><a href="#tab3default" data-toggle="tab">Default 3</a></li>_x000D_
<li class="dropdown">_x000D_
<a href="#" data-toggle="dropdown">Dropdown <span class="caret"></span></a>_x000D_
<ul class="dropdown-menu" role="menu">_x000D_
<li><a href="#tab4default" data-toggle="tab">Default 4</a></li>_x000D_
<li><a href="#tab5default" data-toggle="tab">Default 5</a></li>_x000D_
</ul>_x000D_
</li>_x000D_
</ul>_x000D_
</div>_x000D_
<div class="panel-body">_x000D_
<div class="tab-content">_x000D_
<div class="tab-pane fade in active" id="tab1default">Default 1</div>_x000D_
<div class="tab-pane fade" id="tab2default">Default 2</div>_x000D_
<div class="tab-pane fade" id="tab3default">Default 3</div>_x000D_
<div class="tab-pane fade" id="tab4default">Default 4</div>_x000D_
<div class="tab-pane fade" id="tab5default">Default 5</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
<div class="col-md-6">_x000D_
<div class="panel with-nav-tabs panel-primary">_x000D_
<div class="panel-heading">_x000D_
<ul class="nav nav-tabs">_x000D_
<li class="active"><a href="#tab1primary" data-toggle="tab">Primary 1</a></li>_x000D_
<li><a href="#tab2primary" data-toggle="tab">Primary 2</a></li>_x000D_
<li><a href="#tab3primary" data-toggle="tab">Primary 3</a></li>_x000D_
<li class="dropdown">_x000D_
<a href="#" data-toggle="dropdown">Dropdown <span class="caret"></span></a>_x000D_
<ul class="dropdown-menu" role="menu">_x000D_
<li><a href="#tab4primary" data-toggle="tab">Primary 4</a></li>_x000D_
<li><a href="#tab5primary" data-toggle="tab">Primary 5</a></li>_x000D_
</ul>_x000D_
</li>_x000D_
</ul>_x000D_
</div>_x000D_
<div class="panel-body">_x000D_
<div class="tab-content">_x000D_
<div class="tab-pane fade in active" id="tab1primary">Primary 1</div>_x000D_
<div class="tab-pane fade" id="tab2primary">Primary 2</div>_x000D_
<div class="tab-pane fade" id="tab3primary">Primary 3</div>_x000D_
<div class="tab-pane fade" id="tab4primary">Primary 4</div>_x000D_
<div class="tab-pane fade" id="tab5primary">Primary 5</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
<div class="container">_x000D_
<div class="row">_x000D_
<div class="col-md-6">_x000D_
<div class="panel with-nav-tabs panel-success">_x000D_
<div class="panel-heading">_x000D_
<ul class="nav nav-tabs">_x000D_
<li class="active"><a href="#tab1success" data-toggle="tab">Success 1</a></li>_x000D_
<li><a href="#tab2success" data-toggle="tab">Success 2</a></li>_x000D_
<li><a href="#tab3success" data-toggle="tab">Success 3</a></li>_x000D_
<li class="dropdown">_x000D_
<a href="#" data-toggle="dropdown">Dropdown <span class="caret"></span></a>_x000D_
<ul class="dropdown-menu" role="menu">_x000D_
<li><a href="#tab4success" data-toggle="tab">Success 4</a></li>_x000D_
<li><a href="#tab5success" data-toggle="tab">Success 5</a></li>_x000D_
</ul>_x000D_
</li>_x000D_
</ul>_x000D_
</div>_x000D_
<div class="panel-body">_x000D_
<div class="tab-content">_x000D_
<div class="tab-pane fade in active" id="tab1success">Success 1</div>_x000D_
<div class="tab-pane fade" id="tab2success">Success 2</div>_x000D_
<div class="tab-pane fade" id="tab3success">Success 3</div>_x000D_
<div class="tab-pane fade" id="tab4success">Success 4</div>_x000D_
<div class="tab-pane fade" id="tab5success">Success 5</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
<div class="col-md-6">_x000D_
<div class="panel with-nav-tabs panel-info">_x000D_
<div class="panel-heading">_x000D_
<ul class="nav nav-tabs">_x000D_
<li class="active"><a href="#tab1info" data-toggle="tab">Info 1</a></li>_x000D_
<li><a href="#tab2info" data-toggle="tab">Info 2</a></li>_x000D_
<li><a href="#tab3info" data-toggle="tab">Info 3</a></li>_x000D_
<li class="dropdown">_x000D_
<a href="#" data-toggle="dropdown">Dropdown <span class="caret"></span></a>_x000D_
<ul class="dropdown-menu" role="menu">_x000D_
<li><a href="#tab4info" data-toggle="tab">Info 4</a></li>_x000D_
<li><a href="#tab5info" data-toggle="tab">Info 5</a></li>_x000D_
</ul>_x000D_
</li>_x000D_
</ul>_x000D_
</div>_x000D_
<div class="panel-body">_x000D_
<div class="tab-content">_x000D_
<div class="tab-pane fade in active" id="tab1info">Info 1</div>_x000D_
<div class="tab-pane fade" id="tab2info">Info 2</div>_x000D_
<div class="tab-pane fade" id="tab3info">Info 3</div>_x000D_
<div class="tab-pane fade" id="tab4info">Info 4</div>_x000D_
<div class="tab-pane fade" id="tab5info">Info 5</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
<div class="container">_x000D_
<div class="row">_x000D_
<div class="col-md-6">_x000D_
<div class="panel with-nav-tabs panel-warning">_x000D_
<div class="panel-heading">_x000D_
<ul class="nav nav-tabs">_x000D_
<li class="active"><a href="#tab1warning" data-toggle="tab">Warning 1</a></li>_x000D_
<li><a href="#tab2warning" data-toggle="tab">Warning 2</a></li>_x000D_
<li><a href="#tab3warning" data-toggle="tab">Warning 3</a></li>_x000D_
<li class="dropdown">_x000D_
<a href="#" data-toggle="dropdown">Dropdown <span class="caret"></span></a>_x000D_
<ul class="dropdown-menu" role="menu">_x000D_
<li><a href="#tab4warning" data-toggle="tab">Warning 4</a></li>_x000D_
<li><a href="#tab5warning" data-toggle="tab">Warning 5</a></li>_x000D_
</ul>_x000D_
</li>_x000D_
</ul>_x000D_
</div>_x000D_
<div class="panel-body">_x000D_
<div class="tab-content">_x000D_
<div class="tab-pane fade in active" id="tab1warning">Warning 1</div>_x000D_
<div class="tab-pane fade" id="tab2warning">Warning 2</div>_x000D_
<div class="tab-pane fade" id="tab3warning">Warning 3</div>_x000D_
<div class="tab-pane fade" id="tab4warning">Warning 4</div>_x000D_
<div class="tab-pane fade" id="tab5warning">Warning 5</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
<div class="col-md-6">_x000D_
<div class="panel with-nav-tabs panel-danger">_x000D_
<div class="panel-heading">_x000D_
<ul class="nav nav-tabs">_x000D_
<li class="active"><a href="#tab1danger" data-toggle="tab">Danger 1</a></li>_x000D_
<li><a href="#tab2danger" data-toggle="tab">Danger 2</a></li>_x000D_
<li><a href="#tab3danger" data-toggle="tab">Danger 3</a></li>_x000D_
<li class="dropdown">_x000D_
<a href="#" data-toggle="dropdown">Dropdown <span class="caret"></span></a>_x000D_
<ul class="dropdown-menu" role="menu">_x000D_
<li><a href="#tab4danger" data-toggle="tab">Danger 4</a></li>_x000D_
<li><a href="#tab5danger" data-toggle="tab">Danger 5</a></li>_x000D_
</ul>_x000D_
</li>_x000D_
</ul>_x000D_
</div>_x000D_
<div class="panel-body">_x000D_
<div class="tab-content">_x000D_
<div class="tab-pane fade in active" id="tab1danger">Danger 1</div>_x000D_
<div class="tab-pane fade" id="tab2danger">Danger 2</div>_x000D_
<div class="tab-pane fade" id="tab3danger">Danger 3</div>_x000D_
<div class="tab-pane fade" id="tab4danger">Danger 4</div>_x000D_
<div class="tab-pane fade" id="tab5danger">Danger 5</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
<br/>
_x000D_
To install the Jupyterthemes package directly with conda, use:
conda install -c conda-forge jupyterthemes
Then, as others have pointed out, change the theme with jt -t <theme-name>
Here is an example using pg_basebackup
I chose to go this route because it backs up the entire database cluster (users, databases, etc.).
I'm posting this as a solution on here because it details every step I had to take, feel free to add recommendations or improvements after reading other answers on here and doing some more research.
For Postgres 12 and Ubuntu 18.04 I had to do these actions:
On the server that is currently running the database:
Update pg_hba.conf
, for me located at /etc/postgresql/12/main/pg_hba.conf
Add the following line (substitute 192.168.0.100 with the IP address of the server you want to copy the database to).
host replication postgres 192.168.0.100/32 trust
Update postgresql.conf
, for me located at /etc/postgresql/12/main/postgresql.conf
. Add the following line:
listen_addresses = '*'
Restart postgres:
sudo service postgresql restart
On the host you want to copy the database cluster to:
sudo service postgresql stop
sudo su root
rm -rf /var/lib/postgresql/12/main/*
exit
sudo -u postgres pg_basebackup -h 192.168.0.101 -U postgres -D /var/lib/postgresql/12/main/
sudo service postgresql start
Big picture - stop the service, delete everything in the data directory (mine is in /var/lib/postgreql/12
). The permissions on this directory are drwx------
with user and group postgres
. I could only do this as root
, not even with sudo -u postgres
. I'm unsure why. Ensure you are doing this on the new server you want to copy the database to! You are deleting the entire database cluster.
Make sure to change the IP address from 192.168.0.101
to the IP address you are copying the database from. Copy the data from the original server with pg_basebackup
. Start the service.
Update pg_hba.conf
and postgresql.conf
to match the original server configuration - before you made any changes adding the replication
line and the listen_addresses
line (in my care I had to add the ability to log-in locally via md5 to pg_hba.conf).
Note there are considerations for max_wal_senders
and wal_level
that can be found in the documentation. I did not have to do anything with this.
For those like me, who have reached this thread because they want to serve an html file from linux terminal or want to view it using a terminal command, use these steps:-
1)If you want to view your html using a browser:-
Navigate to the directory containing the html file
If you have chrome installed, Use:-
google-chrome <filename>.html
OR
Use:-
firefox <filename>.html
2)If you want to serve html file and view it using a browser
Navigate to the directory containing the html file
And Simply type the following on the Terminal:-
pushd <filename>.html; python3 -m http.server 9999; popd;
Then click the I.P. address 0.0.0.0:9999 OR localhost:9999 (Whatever is the result after executing the above commands). Or type on the terminal :-
firefox 0.0.0.0:9999
Using the second method, anyone else connected to the same network can also view your file by using the URL:- "0.0.0.0:9999"
I found an workaround on the web. I added to /etc/nginx/conf.d/default.conf the following:
location ~ \.css {
add_header Content-Type text/css;
}
location ~ \.js {
add_header Content-Type application/x-javascript;
}
The problem now is that a request to my css file isn't redirected well, as if root is not correctly set. In error.log I see
2012/04/11 14:01:23 [error] 7260#0: *2 open() "/etc/nginx//html/style.css"
So as a second workaround I added the root to each defined location. Now it works, but seems a little redundant. Isn't root inherited from / location ?
An addition to previous answers, to use Request.Params["__EVENTTARGET"]
you have to set the option:
buttonName.UseSubmitBehavior = false;
or
is NOT the same as ||
. Use only ||
operator instead of the or
operator.
Here are some reasons. The:
or
operator has a lower precedence than ||
.or
has a lower precedence than the =
assignment operator.and
and or
have the same precedence, while &&
has a higher precedence than ||
.To suppress the page number on the first page, add \thispagestyle{empty}
after the \maketitle
command.
The second page of the document will then be numbered "2". If you want this page to be numbered "1", you can add \pagenumbering{arabic}
after the \clearpage
command, and this will reset the page number.
Here's a complete minimal example:
\documentclass[notitlepage]{article}
\title{My Report}
\author{My Name}
\begin{document}
\maketitle
\thispagestyle{empty}
\begin{abstract}
\ldots
\end{abstract}
\clearpage
\pagenumbering{arabic}
\section{First Section}
\ldots
\end{document}
I wrote a package named Pretty Slice. You can use it to visualize slices, and their backing arrays, etc.
package main
import pretty "github.com/inancgumus/prettyslice"
func main() {
nums := []int{1, 9, 5, 6, 4, 8}
odds := nums[:3]
evens := nums[3:]
nums[1], nums[3] = 9, 6
pretty.Show("nums", nums)
pretty.Show("odds : nums[:3]", odds)
pretty.Show("evens: nums[3:]", evens)
}
This code is going produce and output like this one:
For more details, please read: https://github.com/inancgumus/prettyslice
I wanted to use the C++11 answer, but I could not because GCC 4.9 does not support std::put_time.
std::put_time implementation status in GCC?
I ended up using some C++11 to slightly improve the non-C++11 answer. For those that can't use GCC 5, but would still like some C++11 in their date/time format:
std::array<char, 64> buffer;
buffer.fill(0);
time_t rawtime;
time(&rawtime);
const auto timeinfo = localtime(&rawtime);
strftime(buffer.data(), sizeof(buffer), "%d-%m-%Y %H-%M-%S", timeinfo);
std::string timeStr(buffer.data());
Vector's iterators are random access iterators which means they look and feel like plain pointers.
You can access the nth element by adding n to the iterator returned from the container's begin()
method, or you can use operator []
.
std::vector<int> vec(10);
std::vector<int>::iterator it = vec.begin();
int sixth = *(it + 5);
int third = *(2 + it);
int second = it[1];
Alternatively you can use the advance function which works with all kinds of iterators. (You'd have to consider whether you really want to perform "random access" with non-random-access iterators, since that might be an expensive thing to do.)
std::vector<int> vec(10);
std::vector<int>::iterator it = vec.begin();
std::advance(it, 5);
int sixth = *it;
If I'm not mistaken you're looking for the FolderBrowserDialog (hence the naming):
var dialog = new System.Windows.Forms.FolderBrowserDialog();
System.Windows.Forms.DialogResult result = dialog.ShowDialog();
Also see this SO thread: Open directory dialog
You have empty $_POST
. If your web-server wants see data in json-format you need to read the raw input and then parse it with JSON decode.
You need something like that:
$json = file_get_contents('php://input');
$obj = json_decode($json);
Also you have wrong code for testing JSON-communication...
CURLOPT_POSTFIELDS
tells curl
to encode your parameters as application/x-www-form-urlencoded
. You need JSON-string here.
UPDATE
Your php code for test page should be like that:
$data_string = json_encode($data);
$ch = curl_init('http://webservice.local/');
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Content-Length: ' . strlen($data_string))
);
$result = curl_exec($ch);
$result = json_decode($result);
var_dump($result);
Also on your web-service page you should remove one of the lines header('Content-type: application/json');
. It must be called only once.
[A-Za-z0-9_.-]*
This will also match for empty strings, if you do not want that exchange the last *
for an +
If you want to load/process/display images I suggest you use an image processing framework. Using Marvin, for instance, you can do that easily with just a few lines of source code.
Source code:
public class Example extends JFrame{
MarvinImagePlugin prewitt = MarvinPluginLoader.loadImagePlugin("org.marvinproject.image.edge.prewitt");
MarvinImagePlugin errorDiffusion = MarvinPluginLoader.loadImagePlugin("org.marvinproject.image.halftone.errorDiffusion");
MarvinImagePlugin emboss = MarvinPluginLoader.loadImagePlugin("org.marvinproject.image.color.emboss");
public Example(){
super("Example");
// Layout
setLayout(new GridLayout(2,2));
// Load images
MarvinImage img1 = MarvinImageIO.loadImage("./res/car.jpg");
MarvinImage img2 = new MarvinImage(img1.getWidth(), img1.getHeight());
MarvinImage img3 = new MarvinImage(img1.getWidth(), img1.getHeight());
MarvinImage img4 = new MarvinImage(img1.getWidth(), img1.getHeight());
// Image Processing plug-ins
errorDiffusion.process(img1, img2);
prewitt.process(img1, img3);
emboss.process(img1, img4);
// Set panels
addPanel(img1);
addPanel(img2);
addPanel(img3);
addPanel(img4);
setSize(560,380);
setVisible(true);
}
public void addPanel(MarvinImage image){
MarvinImagePanel imagePanel = new MarvinImagePanel();
imagePanel.setImage(image);
add(imagePanel);
}
public static void main(String[] args) {
new Example().setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
Output:
Why don't you try using Context?
You can declare a global context variable in any of the parent components and this variable will be accessible across the component tree by this.context.varname
. You only have to specify childContextTypes
and getChildContext
in the parent component and thereafter you can use/modify this from any component by just specifying contextTypes
in the child component.
However, please take a note of this as mentioned in docs:
Just as global variables are best avoided when writing clear code, you should avoid using context in most cases. In particular, think twice before using it to "save typing" and using it instead of passing explicit props.
function bookmark(title, url) {
if (window.sidebar) {
// Firefox
window.sidebar.addPanel(title, url, '');
}
else if (window.opera && window.print)
{
// Opera
var elem = document.createElement('a');
elem.setAttribute('href', url);
elem.setAttribute('title', title);
elem.setAttribute('rel', 'sidebar');
elem.click(); //this.title=document.title;
}
else if (document.all)
{
// ie
window.external.AddFavorite(url, title);
}
}
I used this & works great in IE, FF, Netscape. Chrome, Opera and safari do not support it!
is it possible to export without looping through all records
For a range in Excel with a large number of rows you may see some performance improvement if you create an Access.Application
object in Excel and then use it to import the Excel data into Access. The code below is in a VBA module in the same Excel document that contains the following test data
Option Explicit
Sub AccImport()
Dim acc As New Access.Application
acc.OpenCurrentDatabase "C:\Users\Public\Database1.accdb"
acc.DoCmd.TransferSpreadsheet _
TransferType:=acImport, _
SpreadSheetType:=acSpreadsheetTypeExcel12Xml, _
TableName:="tblExcelImport", _
Filename:=Application.ActiveWorkbook.FullName, _
HasFieldNames:=True, _
Range:="Folio_Data_original$A1:B10"
acc.CloseCurrentDatabase
acc.Quit
Set acc = Nothing
End Sub
Input one number at a time, and check whether the following character is ,
. If so, discard it.
#include <vector>
#include <string>
#include <sstream>
#include <iostream>
int main()
{
std::string str = "1,2,3,4,5,6";
std::vector<int> vect;
std::stringstream ss(str);
for (int i; ss >> i;) {
vect.push_back(i);
if (ss.peek() == ',')
ss.ignore();
}
for (std::size_t i = 0; i < vect.size(); i++)
std::cout << vect[i] << std::endl;
}
netem leverages functionality already built into Linux and userspace utilities to simulate networks. This is actually what Mark's answer refers to, by a different name.
The examples on their homepage already show how you can achieve what you've asked for:
Examples
Emulating wide area network delays
This is the simplest example, it just adds a fixed amount of delay to all packets going out of the local Ethernet.
# tc qdisc add dev eth0 root netem delay 100ms
Now a simple ping test to host on the local network should show an increase of 100 milliseconds. The delay is limited by the clock resolution of the kernel (Hz). On most 2.4 systems, the system clock runs at 100 Hz which allows delays in increments of 10 ms. On 2.6, the value is a configuration parameter from 1000 to 100 Hz.
Later examples just change parameters without reloading the qdisc
Real wide area networks show variability so it is possible to add random variation.
# tc qdisc change dev eth0 root netem delay 100ms 10ms
This causes the added delay to be 100 ± 10 ms. Network delay variation isn't purely random, so to emulate that there is a correlation value as well.
# tc qdisc change dev eth0 root netem delay 100ms 10ms 25%
This causes the added delay to be 100 ± 10 ms with the next random element depending 25% on the last one. This isn't true statistical correlation, but an approximation.
Delay distribution
Typically, the delay in a network is not uniform. It is more common to use a something like a normal distribution to describe the variation in delay. The netem discipline can take a table to specify a non-uniform distribution.
# tc qdisc change dev eth0 root netem delay 100ms 20ms distribution normal
The actual tables (normal, pareto, paretonormal) are generated as part of the iproute2 compilation and placed in /usr/lib/tc; so it is possible with some effort to make your own distribution based on experimental data.
Packet loss
Random packet loss is specified in the 'tc' command in percent. The smallest possible non-zero value is:
2-32 = 0.0000000232%
# tc qdisc change dev eth0 root netem loss 0.1%
This causes 1/10th of a percent (i.e. 1 out of 1000) packets to be randomly dropped.
An optional correlation may also be added. This causes the random number generator to be less random and can be used to emulate packet burst losses.
# tc qdisc change dev eth0 root netem loss 0.3% 25%
This will cause 0.3% of packets to be lost, and each successive probability depends by a quarter on the last one.
Probn = 0.25 × Probn-1 + 0.75 × Random
Note that you should use tc qdisc add
if you have no rules for that interface or tc qdisc change
if you already have rules for that interface. Attempting to use tc qdisc change
on an interface with no rules will give the error RTNETLINK answers: No such file or directory
.
For unmanaged types aka value types, structs:
Marshal.SizeOf(object);
For managed objects the closer i got is an approximation.
long start_mem = GC.GetTotalMemory(true);
aclass[] array = new aclass[1000000];
for (int n = 0; n < 1000000; n++)
array[n] = new aclass();
double used_mem_median = (GC.GetTotalMemory(false) - start_mem)/1000000D;
Do not use serialization.A binary formatter adds headers, so you can change your class and load an old serialized file into the modified class.
Also it won't tell you the real size in memory nor will take into account memory alignment.
[Edit] By using BiteConverter.GetBytes(prop-value) recursivelly on every property of your class you would get the contents in bytes, that doesn't count the weight of the class or references but is much closer to reality. I would recommend to use a byte array for data and an unmanaged proxy class to access values using pointer casting if size matters, note that would be non-aligned memory so on old computers is gonna be slow but HUGE datasets on MODERN RAM is gonna be considerably faster, as minimizing the size to read from RAM is gonna be a bigger impact than unaligned.
Sorry, but why not use the following construction:
request.getParameterMap().put(parameterName, new String[] {parameterValue});
Just an update with Java Generics.
You could create an utility method to retrieve an optional value of any Java type from a given ResultSet, previously casted.
Unfortunately, getObject(columnName, Class) does not return null, but the default value for given Java type, so 2 calls are required
public <T> T getOptionalValue(final ResultSet rs, final String columnName, final Class<T> clazz) throws SQLException {
final T value = rs.getObject(columnName, clazz);
return rs.wasNull() ? null : value;
}
In this example, your code could look like below:
final Integer columnValue = getOptionalValue(rs, Integer.class);
if (columnValue == null) {
//null handling
} else {
//use int value of columnValue with autoboxing
}
Happy to get feedback
import java.util.*;
import java.lang.*;
import java.io.*;
class hari
{
public static void main (String[] args) throws Exception
{ Scanner s=new Scanner(System.in);
int i=0;
int b=0;
HashSet<Integer> h=new HashSet<Integer>();
try{
for(i=0;i<1000;i++)
{ b=s.nextInt();
h.add(b);
}
}
catch(Exception e){
System.out.println(h+","+h.size());
}
}}
Encrypting using openssl_encrypt() The openssl_encrypt function provides a secured and easy way to encrypt your data.
In the script below, we use the AES128 encryption method, but you may consider other kind of encryption method depending on what you want to encrypt.
<?php
$message_to_encrypt = "Yoroshikune";
$secret_key = "my-secret-key";
$method = "aes128";
$iv_length = openssl_cipher_iv_length($method);
$iv = openssl_random_pseudo_bytes($iv_length);
$encrypted_message = openssl_encrypt($message_to_encrypt, $method, $secret_key, 0, $iv);
echo $encrypted_message;
?>
Here is an explanation of the variables used :
message_to_encrypt : the data you want to encrypt secret_key : it is your ‘password’ for encryption. Be sure not to choose something too easy and be careful not to share your secret key with other people method : the method of encryption. Here we chose AES128. iv_length and iv : prepare the encryption using bytes encrypted_message : the variable including your encrypted message
Decrypting using openssl_decrypt() Now you encrypted your data, you may need to decrypt it in order to re-use the message you first included into a variable. In order to do so, we will use the function openssl_decrypt().
<?php
$message_to_encrypt = "Yoroshikune";
$secret_key = "my-secret-key";
$method = "aes128";
$iv_length = openssl_cipher_iv_length($method);
$iv = openssl_random_pseudo_bytes($iv_lenght);
$encrypted_message = openssl_encrypt($message_to_encrypt, $method, $secret_key, 0, $iv);
$decrypted_message = openssl_decrypt($encrypted_message, $method, $secret_key, 0, $iv);
echo $decrypted_message;
?>
The decrypt method proposed by openssl_decrypt() is close to openssl_encrypt().
The only difference is that instead of adding $message_to_encrypt, you will need to add your already encrypted message as the first argument of openssl_decrypt().
That is all you have to do.
if ([self.locationManager respondsToSelector:@selector(setAllowsBackgroundLocationUpdates:)]) {
[self.locationManager setAllowsBackgroundLocationUpdates:YES];
}
This is needed for background location tracking since iOS 9.
Content inside a <div class='html-content'>....</div>
can be downloaded as pdf with styles using jspdf & html2canvas.
You need to refer both js libraries,
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.5.3/jspdf.min.js"></script>
<script type="text/javascript" src="https://html2canvas.hertzen.com/dist/html2canvas.js"></script>
Then call below function,
//Create PDf from HTML...
function CreatePDFfromHTML() {
var HTML_Width = $(".html-content").width();
var HTML_Height = $(".html-content").height();
var top_left_margin = 15;
var PDF_Width = HTML_Width + (top_left_margin * 2);
var PDF_Height = (PDF_Width * 1.5) + (top_left_margin * 2);
var canvas_image_width = HTML_Width;
var canvas_image_height = HTML_Height;
var totalPDFPages = Math.ceil(HTML_Height / PDF_Height) - 1;
html2canvas($(".html-content")[0]).then(function (canvas) {
var imgData = canvas.toDataURL("image/jpeg", 1.0);
var pdf = new jsPDF('p', 'pt', [PDF_Width, PDF_Height]);
pdf.addImage(imgData, 'JPG', top_left_margin, top_left_margin, canvas_image_width, canvas_image_height);
for (var i = 1; i <= totalPDFPages; i++) {
pdf.addPage(PDF_Width, PDF_Height);
pdf.addImage(imgData, 'JPG', top_left_margin, -(PDF_Height*i)+(top_left_margin*4),canvas_image_width,canvas_image_height);
}
pdf.save("Your_PDF_Name.pdf");
$(".html-content").hide();
});
}
Ref: pdf genration from html canvas and jspdf.
May be this will help someone.
The second formula on that page uses the GCD function of the Analysis ToolPak, you can add it from Tools > Add-Ins.
=A1/GCD(A1,B1)&":"&B1/GCD(A1,B1)
This is a more mathematical formula rather than a text manipulation based on.
InvariantCulture
is similar to en-US
, so i would use the correct CultureInfo
instead:
var dutchCulture = CultureInfo.CreateSpecificCulture("nl-NL");
var date1 = DateTime.ParseExact(date, "dd.MM.yyyy HH:mm:ss", dutchCulture);
And what about when the culture is en-us? Will I have to code for every single language there is out there?
If you want to know how to display the date in another culture like "en-us", you can use date1.ToString(CultureInfo.CreateSpecificCulture("en-US"))
.
If you're OK with enclosing the whole HTML <body>
with a <div>
tag, here is my solution, which works on Chrome 88.0.4324.104 (the latest version as of Jan., 23, 2021).
First, add the audio section along with a piece of script shown below at the start of <body>
section:
<audio id="divAudio">
<source src="music.mp3" type="audio/mp3">
</audio>
<script>
var vAudio = document.getElementById("divAudio");
function playMusic()
{
vAudio.play();
}
</script>
Second, enclose your whole HTML <body>
contents (excluding the inserted piece of code shown above) with a dummy section <div onmouseover="playMusic()">
. If your HTML <body>
contents are already enclosed by a global <div>
section, then just add the onmouseover="playMusic()"
tag in that <div>
.
The solution works by triggering the playMusic()
function by hovering over the webpage and tricks Chrome of "thinking" that the user has done something to play it. This solution also comes with the benefit that the piece of audio would only be played when the user is browsing that page.
On Windows at least, pip
stores the execution path in the executable pip.exe
when it is installed.
Edit this file using a hex editor or WordPad (you have to save it as plain text then to retain binary data), change the path to Python with quotes and spaces like this:
#!"C:\Program Files (x86)\Python33\python.exe"
to an escaped path without spaces and quotes and pad with spaces (dots at the end should be spaces):
#!C:\Progra~2\Python33\python.exe.............
For "C:\Program Files", this path would probably be "C:\Progra~1" (shortened path names in DOS / Windows 3.x notation use tilde and numbers). Windows provides this alternative notation for backwards compatibility with DOS / Windows 3.x apps.
Note that as this is a binary file, you should not change the file size which may break the executable, hence the padding.
Save with administrator privileges, make sure it is actually saved at the target location and try again.
You might also need to set the PATH
variable to use the ~
notation for the path to pip
.
Have a Table class whose rows is a list of dict or better row objects
In table do not directly add rows but have a method which update few lookup maps e.g. for name if you are not adding rows in order or id are not consecutive you can have idMap too e.g.
class Table(object):
def __init__(self):
self.rows = []# list of row objects, we assume if order of id
self.nameMap = {} # for faster direct lookup for row by name
def addRow(self, row):
self.rows.append(row)
self.nameMap[row['name']] = row
def getRow(self, name):
return self.nameMap[name]
table = Table()
table.addRow({'ID':1,'name':'a'})
A bit late to the party, but I had to solve this for myself recently, though slightly different, it might still help someone with similar circumstances to my own.
I'm using xampp on a laptop to run a purely local website app on windows. (A very specific environment I know). In this instance, I use a html link to a php file and run:
shell_exec('cd C:\path\to\file');
shell_exec('start .');
This opens a local Windows explorer window.
The error message points to a problem with your Java version. Do you have a JDK installed?
Try adding the following (noting the new line):
/!\ make sure, that the
-vm
option occurs before the-vmargs
command. Everything after-vmargs
is passed directly to the JVM.
-vm
c:/wherever/java/jdk1.6.0_21/jre/bin/server/jvm.dll
-vmargs...
...to your eclipse.ini
file, pointing to the JDK you want to use, and check that the required Java version is at least as new as your JDK. This is the path for a Windows system. More on paths can be found here (scroll down).
If you don't know where the eclipse.ini
file is: regularly it is in the folder of your eclipse.exe
.
Edit2: @KadoLakatt: the reason why installing the latest Java Version worked for you is because Eclipse checks the standard path for a JVM if it doesn't find a -vm
entry (see here). However I'd not recommend that, since you might be wrong guessing the JVM used. If you update Java (automatically?) you might run into problems in your Eclipse wondering what you might have changed. Better set it to a specific folder in your eclipse.ini
to be certain.
Here is example which can give you some hints to iterate through existing array and add items to new array. I use UnderscoreJS Module to use as my utility file.
You can download from (https://npmjs.org/package/underscore)
$ npm install underscore
Here is small snippet to demonstrate how you can do it.
var _ = require("underscore");
var calendars = [1, "String", {}, 1.1, true],
newArray = [];
_.each(calendars, function (item, index) {
newArray.push(item);
});
console.log(newArray);
var objectList = objects.ToList();
objectList[0].SimpleInt=5;
This will update the original object as well. The new list will contain references to the objects contained within it, just like the original list. You can change the elements either and the update will be reflected in the other.
Now if you update a list (adding or deleting an item) that will not be reflected in the other list.
In mail function you can as many reciepient as you want in $emailto paramater seperated by comma.
The function I use currently:
/**
* Serializes form or any other element with jQuery.serialize
* @param el
*/
serialize: function(el) {
var serialized = $(el).serialize();
if (!serialized) // not a form
serialized = $(el).
find('input[name],select[name],textarea[name]').serialize();
return serialized;
}
If you do this for testing you could use Quickcheck (this is a Java port I've been working on).
import static net.java.quickcheck.generator.PrimitiveGeneratorSamples.*;
TimeUnit anyEnumValue = anyEnumValue(TimeUnit.class); //one value
It supports all primitive types, type composition, collections, different distribution functions, bounds etc. It has support for runners executing multiple values:
import static net.java.quickcheck.generator.PrimitiveGeneratorsIterables.*;
for(TimeUnit timeUnit : someEnumValues(TimeUnit.class)){
//..test multiple values
}
The advantage of Quickcheck is that you can define tests based on a specification where plain TDD works with scenarios.
"2.7.0_bf4fda703454".split("_")
gives a list of strings:
In [1]: "2.7.0_bf4fda703454".split("_")
Out[1]: ['2.7.0', 'bf4fda703454']
This splits the string at every underscore. If you want it to stop after the first split, use "2.7.0_bf4fda703454".split("_", 1)
.
If you know for a fact that the string contains an underscore, you can even unpack the LHS and RHS into separate variables:
In [8]: lhs, rhs = "2.7.0_bf4fda703454".split("_", 1)
In [9]: lhs
Out[9]: '2.7.0'
In [10]: rhs
Out[10]: 'bf4fda703454'
An alternative is to use partition()
. The usage is similar to the last example, except that it returns three components instead of two. The principal advantage is that this method doesn't fail if the string doesn't contain the separator.
For someone doing everything described here and still can't access:
XAMPP with Apache HTTP Server 2.4:
In file httpd-vhost.conf:
<VirtualHost *>
DocumentRoot "D:/xampp/htdocs/dir"
ServerName something.dev
<Directory "D:/xampp/htdocs/dir">
Require all granted #apache v 2.4.4 uses just this
</Directory>
</VirtualHost>
There isn't any need for a port, or an IP address here. Apache configures it on its own files. There isn't any need for NameVirtualHost *:80; it's deprecated. You can use it, but it doesn't make any difference.
Then to edit hosts, you must run Notepad as administrator (described bellow). If you were editing the file without doing this, you are editing a pseudo file, not the original (yes, it saves, etc., but it's not the real file)
In Windows:
Find the Notepad icon, right click, run as administrator, open file, go to C:/WINDOWS/system32/driver/etc/hosts, check "See all files", and open hosts.
If you where editing it before, probably you will see it's not the file you were previously editing when not running as administrator.
Then to check if Apache is reading your httpd-vhost.conf, go to folder xampFolder/apache/bin, Shift + right click, open a terminal command here, open XAMPP (as you usually do), start Apache, and then on the command line, type httpd -S
. You will see a list of the virtual hosts. Just check if your something.dev is there.
you can add builder.show(); after validation message before return;
like this
public void login()
{
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(R.layout.login_layout);
builder.setTitle("Login");
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int id)
{
dialog.cancel();
}
});// put the negative button before the positive button, so it will appear
builder.setPositiveButton("Ok", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int id)
{
Dialog d = (Dialog) dialog;
final EditText etUserName = (EditText) d.findViewById(R.id.etLoginName);
final EditText etPassword = (EditText) d.findViewById(R.id.etLoginPassword);
String userName = etUserName.getText().toString().trim();
String password = etPassword.getText().toString().trim();
if (userName.isEmpty() || password.isEmpty())
{
Toast.makeText(getApplicationContext(),
"Please Fill all fields", Toast.LENGTH_SHORT).show();
builder.show();// here after validation message before retrun
// it will reopen the dialog
// till the user enter the right condition
return;
}
user = Manager.get(getApplicationContext()).getUserByName(userName);
if (user == null)
{
Toast.makeText(getApplicationContext(),
"Error ethier username or password are wrong", Toast.LENGTH_SHORT).show();
builder.show();
return;
}
if (password.equals(user.getPassword()))
{
etPassword.setText("");
etUserName.setText("");
setLogged(1);
setLoggedId(user.getUserId());
Toast.makeText(getApplicationContext(),
"Successfully logged in", Toast.LENGTH_SHORT).show();
dialog.dismiss();// if every thing is ok then dismiss the dialog
}
else
{
Toast.makeText(getApplicationContext(),
"Error ethier username or password are wrong", Toast.LENGTH_SHORT).show();
builder.show();
return;
}
}
});
builder.show();
}
Here's a quick two-liner that I use to quickly create a file if it doesn't exists.
if not os.path.exists(filename):
open(filename, 'w').close()
Simply best way from linux server
sudo mysql --defaults-file=/etc/mysql/debian.cnf -e 'use mysql;UPDATE user SET password=PASSWORD("snippetbucket-technologies") WHERE user="root";FLUSH PRIVILEGES;'
This way work for any linux server, I had 100% sure on Debian and Ubuntu you win.
You should be able to accomplish this by adding a refspec for tags to your local config. Concretely:
[remote "upstream"]
url = <redacted>
fetch = +refs/heads/*:refs/remotes/upstream/*
fetch = +refs/tags/*:refs/tags/*
This opens Textmate editor in when you want to edit your commits. Requires textmate command line tools to be installed.
git config --global core.editor "mate -w"
Working code:
addresses = geocoder.getFromLocation(mMap.getCameraPosition().target.latitude, mMap.getCameraPosition().target.longitude, 1); // Here 1 represent max location result to returned, by documents it recommended 1 to 5
String locality = addresses.get(0).getLocality(); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
String subLocality = addresses.get(0).getSubLocality(); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
//String address = addresses.get(0).getAddressLine(0); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
String address1 = addresses.get(0).getAddressLine(1); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
String address2 = addresses.get(0).getAddressLine(2); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
String city = addresses.get(0).getLocality();
String state = addresses.get(0).getAdminArea();
String country = addresses.get(0).getCountryName();
// String postalCode = addresses.get(0).getPostalCode();
String knownName = addresses.get(0).getFeatureName();
This is possible. Try this way:
Create Global Temporary Table
BossaDoSamba
On Commit Preserve Rows
As
select ArtistName, sum(Songs) As NumberOfSongs
from Spotfy
where ArtistName = 'BossaDoSamba'
group by ArtistName;
The file may be existing but may have a different path. Try writing the absolute path for the file.
Try os.listdir()
function to check that atleast python sees the file.
Try it like this:
file1 = open(r'Drive:\Dir\recentlyUpdated.yaml')
Check that doPost()
method of servlet is called from the jsp form and remove conn.commit
.
I just use eco
to do the job for me.
eco
is supported by Sprockets by default. It's a shorthand for Embedded Coffeescript which takes a eco file and compile into a Javascript template file, and the file will be treated like any other js files you have in your assets folder.
All you need to do is to create a template with extension .jst.eco and write some html code in there, and rails will automatically compile and serve the file with the assets pipeline, and the way to access the template is really easy: JST['path/to/file']({var: value});
where path/to/file
is based on the logical path, so if you have file in /assets/javascript/path/file.jst.eco
, you can access the template at JST['path/file']()
To make it work with angularjs, you can pass it into the template attribute instead of templateDir, and it will start working magically!
You can do like below to make setTimeout pausable on server side (Node.js)
const PauseableTimeout = function(callback, delay) {
var timerId, start, remaining = delay;
this.pause = function() {
global.clearTimeout(timerId);
remaining -= Date.now() - start;
};
this.resume = function() {
start = Date.now();
global.clearTimeout(timerId);
timerId = global.setTimeout(callback, remaining);
};
this.resume();
};
and you can check it as below
var timer = new PauseableTimeout(function() {
console.log("Done!");
}, 3000);
setTimeout(()=>{
timer.pause();
console.log("setTimeout paused");
},1000);
setTimeout(()=>{
console.log("setTimeout time complete");
},3000)
setTimeout(()=>{
timer.resume();
console.log("setTimeout resume again");
},5000)
That is direct link to ISO file
[https://go.microsoft.com/fwlink/?LinkId=615448&clcid=0x409][1]
func cropImage(imageToCrop:UIImage, toRect rect:CGRect) -> UIImage{
let imageRef:CGImage = imageToCrop.cgImage!.cropping(to: rect)!
let cropped:UIImage = UIImage(cgImage:imageRef)
return cropped
}
let imageTop:UIImage = UIImage(named:"one.jpg")! // add validation
with help of this bridge function CGRectMake
-> CGRect
(credits to this answer answered by @rob mayoff
):
func CGRectMake(_ x: CGFloat, _ y: CGFloat, _ width: CGFloat, _ height: CGFloat) -> CGRect {
return CGRect(x: x, y: y, width: width, height: height)
}
The usage is:
if var image:UIImage = UIImage(named:"one.jpg"){
let croppedImage = cropImage(imageToCrop: image, toRect: CGRectMake(
image.size.width/4,
0,
image.size.width/2,
image.size.height)
)
}
Output:
Sorry, if this is irelevant, but will return list with matches using FindAll() in case you need this:
private bool IsContain(string cont)
{
List<string> ListToMatch= new List<string>() {"string1","string2"};
if (ListToMatch.ToArray().Any(cont.Contains))
{
return false;
}
else
return true;
}
And usage:
List<string> ListToCheck = new List<string>() {"string1","string2","string3","string4"};
List<string> FinalList = ListToCheck.FindAll(IsContain);
The final list contains only the matched elements string1 and string2 from list to check. Can easy be switched to int List.
You can also do it using phpmyadmin. Just select the table than go to actions. And change the Auto increment below table options. Don't forget to click on start
Below is a semester long course distilled in a few paragraphs.
Object-Oriented Analysis and Design (OOAD) is actually based on not just two but four principles. They are:
Abstraction: means that you only incorporate those features of an entity which are required in your application. So, if every bank account has an opening date but your application doesn't need to know an account's opening date, then you simply don't add the OpeningDate field in your Object-Oriented Design (of the BankAccount class). †Abstraction in OOAD has nothing to do with abstract classes in OOP.
Per the principle of Abstraction, your entities are an abstraction of what they are in the real world. This way, you design an abstraction of Bank Account down to only that level of detail that is needed by your application.
Inheritance: is more of a coding-trick than an actual principle. It saves you from re-writing those functionalities that you have written somewhere else. However, the thinking is that there must be a relation between the new code you are writing and the old code you are wanting to re-use. Otherwise, nobody prevents you from writing an Animal class which is inheriting from BankAccount, even if it is totally non-sensical.
Just like you may inherit your parents' wealth, you may inherit fields and methods from your parent class. So, taking everything that parent class has and then adding something more if need be, is inheritance. Don't go looking for inheritance in your Object Oriented Design. Inheritance will naturally present itself.
Polymorphism: is a consequence of inheritance. Inheriting a method from the parent is useful, but being able to modify a method if the situation demands, is polymorphism. You may implement a method in the subclass with exactly the same signature as in parent class so that when called, the method from child class is executed. This is the principle of Polymorphism.
Encapsulation: implies bundling the related functionality together and giving access to only the needful. Encapsulation is the basis of meaningful class designing in Object Oriented Design, by:
Another simplified answer is here.
† People who argue that "Abstraction of OOAD results in the abstract keyword of OOP"... Well that is incorrect.
Example: When you design a University in an application using object oriented principles, you only design an "abstraction" of the university. Even though there is usually one cash dispensing ATM in almost every university, you may not incorporate that fact if it's not needed for your application. And now though you have designed only an abstraction of the university, you are not required to put abstract in your class declaration. Your abstract design of university will be a normal class in your application.
Try to use datepicker/ timepicker instead of datetimepicker like:
replace:
$('#datetimepicker1').datetimepicker();
with:
$('#datetimepicker1').datepicker(); // or timepicker for time picker
With ES6 you can write this:
const countries = ['United States', 'Canada', 'Argentina', 'Armenia'];
const $ul = $('<ul>', { class: "mylist" }).append(
countries.map(country =>
$("<li>").append($("<a>").text(country))
)
);
I had a similar issue with my OLE DB Command and I resolved it by setting the ValidateExternalMetadata property within the component to False.
Use the time module:
epoch_time = int(time.time())
You can run these two commands:
# Revert changes to modified files.
git reset --hard
# Remove all untracked files and directories.
# '-f' is force, '-d' is remove directories.
git clean -fd
This example from Java Doc helped me understand the concepts clearly:
class Driver { // ...
void main() throws InterruptedException {
CountDownLatch startSignal = new CountDownLatch(1);
CountDownLatch doneSignal = new CountDownLatch(N);
for (int i = 0; i < N; ++i) // create and start threads
new Thread(new Worker(startSignal, doneSignal)).start();
doSomethingElse(); // don't let run yet
startSignal.countDown(); // let all threads proceed
doSomethingElse();
doneSignal.await(); // wait for all to finish
}
}
class Worker implements Runnable {
private final CountDownLatch startSignal;
private final CountDownLatch doneSignal;
Worker(CountDownLatch startSignal, CountDownLatch doneSignal) {
this.startSignal = startSignal;
this.doneSignal = doneSignal;
}
public void run() {
try {
startSignal.await();
doWork();
doneSignal.countDown();
} catch (InterruptedException ex) {} // return;
}
void doWork() { ... }
}
Visual interpretation:
Evidently, CountDownLatch
allows one thread (here Driver
) to wait until a bunch of running threads (here Worker
) are done with their execution.
This can be done by using SUMPRODUCT
as well. Update the ranges as you see fit
=SUMPRODUCT(($A$2:$A$7=A2)*($B$2:$B$7=B2)*$C$2:$C$7)
A2:A7 = First name range
B2:B7 = Last Name Range
C2:C7 = Numbers Range
This will find all the names with the same first and last name and sum the numbers in your numbers column
echo rawurlencode('http://www.google.com/index.html?id=asd asd');
yields
http%3A%2F%2Fwww.google.com%2Findex.html%3Fid%3Dasd%20asd
while
echo urlencode('http://www.google.com/index.html?id=asd asd');
yields
http%3A%2F%2Fwww.google.com%2Findex.html%3Fid%3Dasd+asd
The difference being the asd%20asd
vs asd+asd
urlencode differs from RFC 1738 by encoding spaces as +
instead of %20
JSON is just a notation; to make the change you want parse
it so you can apply the changes to a native JavaScript Object, then stringify
back to JSON
var jsonStr = '{"theTeam":[{"teamId":"1","status":"pending"},{"teamId":"2","status":"member"},{"teamId":"3","status":"member"}]}';
var obj = JSON.parse(jsonStr);
obj['theTeam'].push({"teamId":"4","status":"pending"});
jsonStr = JSON.stringify(obj);
// "{"theTeam":[{"teamId":"1","status":"pending"},{"teamId":"2","status":"member"},{"teamId":"3","status":"member"},{"teamId":"4","status":"pending"}]}"
In SSMS:
Now, this will drop everything, including the database. Make sure to remove the code for the items you don't want dropped. Alternatively, in the "Choose Objects" section, instead of selecting to script entire database just select the items you want to remove.
To be clear and answer @Dean's question: EBS-type root storage doesn't seem to be ephemeral. Data is persistent across reboots and actually it doesn't make any sense to use ebs-backed root volume which is 'ephemeral'. This wouldn't be different from image-based root volume.
Use copy > your_file_name.extension
in command prompt
like
P:\excecise> copy > Sample.txt
A simple way to do it without the use of such a complicated draw statement:
//Make a backup so that we can reset our graphics object after using it.
AffineTransform backup = g2d.getTransform();
//rx is the x coordinate for rotation, ry is the y coordinate for rotation, and angle
//is the angle to rotate the image. If you want to rotate around the center of an image,
//use the image's center x and y coordinates for rx and ry.
AffineTransform a = AffineTransform.getRotateInstance(angle, rx, ry);
//Set our Graphics2D object to the transform
g2d.setTransform(a);
//Draw our image like normal
g2d.drawImage(image, x, y, null);
//Reset our graphics object so we can draw with it again.
g2d.setTransform(backup);
There's a few ways to do this depending on how you want to hold the value.
You can use basic string formatting, e.g
'Your Meal Price is %.2f' % mealPrice
You can modify the 2
to whatever precision you need.
However, since you're dealing with money you should look into the decimal module which has a cool method named quantize
which is exactly for working with monetary applications. You can use it like so:
from decimal import Decimal, ROUND_DOWN
mealPrice = Decimal(str(mealPrice)).quantize(Decimal('.01'), rounding=ROUND_DOWN)
Note that the rounding
attribute is purely optional as well.
Here is another approach. Instead of propagating the first event of a quick succession of events and suppressing all that follow, now all are suppressed except from the last one. I think that the scenarios that can benefit from this approach are more common.
To make this happen we must use a sliding delay. Every incoming event cancels the timer that would fire the previous event, and restarts the timer. This opens the possibility that a never-ending series of events will delay the propagation forever. To keep things simple, there is no provision for this abnormal case in the extension methods below.
public static class FileSystemWatcherExtensions
{
public static IDisposable OnAnyEvent(this FileSystemWatcher source,
WatcherChangeTypes changeTypes, FileSystemEventHandler handler, int delay)
{
var cancellations = new Dictionary<string, CancellationTokenSource>(
StringComparer.OrdinalIgnoreCase);
var locker = new object();
if (changeTypes.HasFlag(WatcherChangeTypes.Created))
source.Created += FileSystemWatcher_Event;
if (changeTypes.HasFlag(WatcherChangeTypes.Deleted))
source.Deleted += FileSystemWatcher_Event;
if (changeTypes.HasFlag(WatcherChangeTypes.Changed))
source.Changed += FileSystemWatcher_Event;
if (changeTypes.HasFlag(WatcherChangeTypes.Renamed))
source.Renamed += FileSystemWatcher_Event;
return new Disposable(() =>
{
source.Created -= FileSystemWatcher_Event;
source.Deleted -= FileSystemWatcher_Event;
source.Changed -= FileSystemWatcher_Event;
source.Renamed -= FileSystemWatcher_Event;
});
async void FileSystemWatcher_Event(object sender, FileSystemEventArgs e)
{
var key = e.FullPath;
var cts = new CancellationTokenSource();
lock (locker)
{
if (cancellations.TryGetValue(key, out var existing))
{
existing.Cancel();
}
cancellations[key] = cts;
}
try
{
await Task.Delay(delay, cts.Token);
// Omitting ConfigureAwait(false) is intentional here.
// Continuing in the captured context is desirable.
}
catch (TaskCanceledException)
{
return;
}
lock (locker)
{
if (cancellations.TryGetValue(key, out var existing)
&& existing == cts)
{
cancellations.Remove(key);
}
}
cts.Dispose();
handler(sender, e);
}
}
public static IDisposable OnAllEvents(this FileSystemWatcher source,
FileSystemEventHandler handler, int delay)
=> OnAnyEvent(source, WatcherChangeTypes.All, handler, delay);
public static IDisposable OnCreated(this FileSystemWatcher source,
FileSystemEventHandler handler, int delay)
=> OnAnyEvent(source, WatcherChangeTypes.Created, handler, delay);
public static IDisposable OnDeleted(this FileSystemWatcher source,
FileSystemEventHandler handler, int delay)
=> OnAnyEvent(source, WatcherChangeTypes.Deleted, handler, delay);
public static IDisposable OnChanged(this FileSystemWatcher source,
FileSystemEventHandler handler, int delay)
=> OnAnyEvent(source, WatcherChangeTypes.Changed, handler, delay);
public static IDisposable OnRenamed(this FileSystemWatcher source,
FileSystemEventHandler handler, int delay)
=> OnAnyEvent(source, WatcherChangeTypes.Renamed, handler, delay);
private struct Disposable : IDisposable
{
private readonly Action _action;
internal Disposable(Action action) => _action = action;
public void Dispose() => _action?.Invoke();
}
}
Usage example:
myWatcher.OnAnyEvent(WatcherChangeTypes.Created | WatcherChangeTypes.Changed,
MyFileSystemWatcher_Event, 100);
This line combines the subscription to two events, the Created
and the Changed
. So it is roughly equivalent to these:
myWatcher.Created += MyFileSystemWatcher_Event;
myWatcher.Changed += MyFileSystemWatcher_Event;
The difference is that the two events are regarded as a single type of event, and in case of a quick succession of these events only the last one will be propagated. For example if a Created
event is followed by two Changed
events, and there is no time gap larger than 100 msec between these three events, only the second Changed
event will be propagated by invoking the MyFileSystemWatcher_Event
handler, and the previous ones will be discarded.
This question was asked a long time ago so I thought I'd post an updated answer.
You should now avoid using @import
. Taken from the docs:
Sass will gradually phase it out over the next few years, and eventually remove it from the language entirely. Prefer the @use rule instead.
A full list of reasons can be found here
You should now use @use
as shown below:
_variables.scss
$text-colour: #262626;
_otherFile.scss
@use 'variables'; // Path to _variables.scss Notice how we don't include the underscore or file extension
body {
// namespace.$variable-name
// namespace is just the last component of its URL without a file extension
color: variables.$text-colour;
}
You can also create an alias for the namespace:
_otherFile.scss
@use 'variables' as v;
body {
// alias.$variable-name
color: v.$text-colour;
}
EDIT As pointed out by @und3rdg at the time of writing (November 2020) @use
is currently only available for Dart Sass and not LibSass (now deprecated) or Ruby Sass. See https://sass-lang.com/documentation/at-rules/use for the latest compatibility
You don't have to install PyQt4 with all its side features, you just need the PyQt4 package itself. Inside the package you could use the module pyuic.py ("C:\Python27\Lib\site-packages\PyQt4\uic") to convert your Ui file.
C:\test>python C:\Python27x64\Lib\site-packages\PyQt4\uic\pyuic.py -help
update python3: use pyuic5 -help
# add filepath if needed. pyuic version = 4 or 5.
You will get all options listed:
Usage: pyuic4 [options] <ui-file>
Options:
--version show program's version number and exit
-h, --help show this help message and exit
-p, --preview show a preview of the UI instead of generating code
-o FILE, --output=FILE
write generated code to FILE instead of stdout
-x, --execute generate extra code to test and display the class
-d, --debug show debug output
-i N, --indent=N set indent width to N spaces, tab if N is 0 [default:
4]
-w, --pyqt3-wrapper generate a PyQt v3 style wrapper
Code generation options:
--from-imports generate imports relative to '.'
--resource-suffix=SUFFIX
append SUFFIX to the basename of resource files
[default: _rc]
So your command will look like this:
C:\test>python C:\Python27x64\Lib\site-packages\PyQt4\uic\pyuic.py test_dialog.ui -o test.py -x
You could also use full file paths to your file to convert it.
Why do you want to convert it anyway? I prefer creating widgets in the designer and implement them with via the *.ui file. That makes it much more comfortable to edit it later. You could also write your own widget plugins and load them into the Qt Designer with full access. Having your ui hard coded doesn't makes it very flexible.
I reuse a lot of my ui's not only in Maya, also for Max, Nuke, etc.. If you have to change something software specific, you should try to inherit the class (with the parented ui file) from a more global point of view and patch or override the methods you have to adjust. That saves a lot of work time. Let me know if you have more questions about it.
I had the same issue, but was quite easy to solve. Follow the next steps:
1) In the Virtual Machine (VMWare) settings:
2) Add the device into the list of allowed development devices in your Apple Developer's account. Without that step there is no way to use your device in Xcode.
Next some instructions: Register a single device
Use it like this, should work:
<a routerLink="/Service/Sign_in"><button class="btn btn-success pull-right" > Add Customer</button></a>
You can also use router.navigateByUrl('..')
like this:
<button type="button" class="btn btn-primary-outline pull-right" (click)="btnClick();"><i class="fa fa-plus"></i> Add</button>
import { Router } from '@angular/router';
btnClick= function () {
this.router.navigateByUrl('/user');
};
You have to inject Router
in the constructor like this:
constructor(private router: Router) { }
only then you are able to use this.router
. Remember also to import RouterModule
in your module.
Now, After Angular v4 you can directly add routerLink
attribute on the button (As mentioned by @mark in comment section) like below (No "'/url?" since Angular 6, when a Route in RouterModule exists) -
<button [routerLink]="'url'"> Button Label</button>
Please note: this answer is for .Net 4.0 and above. If you want to format a TimeSpan in .Net 3.5 or below please see JohannesH's answer.
Custom TimeSpan format strings were introduced in .Net 4.0. You can find a full reference of available format specifiers at the MSDN Custom TimeSpan Format Strings page.
Here's an example timespan format string:
string.Format("{0:hh\\:mm\\:ss}", myTimeSpan); //example output 15:36:15
(UPDATE) and here is an example using C# 6 string interpolation:
$"{myTimeSpan:hh\\:mm\\:ss}"; //example output 15:36:15
You need to escape the ":" character with a "\" (which itself must be escaped unless you're using a verbatim string).
This excerpt from the MSDN Custom TimeSpan Format Strings page explains about escaping the ":" and "." characters in a format string:
The custom TimeSpan format specifiers do not include placeholder separator symbols, such as the symbols that separate days from hours, hours from minutes, or seconds from fractional seconds. Instead, these symbols must be included in the custom format string as string literals. For example, "dd.hh:mm" defines a period (.) as the separator between days and hours, and a colon (:) as the separator between hours and minutes.
If the constructor with width, height and weight is not working, try using the constructor with width and height. And then manually set the weight.
And if you want the width to be set according to the weight, set width as 0 in the constructor. Same applies for height. Below code works for me.
LinearLayout.LayoutParams childParam1 = new LinearLayout.LayoutParams(0,LinearLayout.LayoutParams.MATCH_PARENT);
childParam1.weight = 0.3f;
child1.setLayoutParams(childParam1);
LinearLayout.LayoutParams childParam2 = new LinearLayout.LayoutParams(0,LinearLayout.LayoutParams.MATCH_PARENT);
childParam2.weight = 0.7f;
child2.setLayoutParams(childParam2);
parent.setWeightSum(1f);
parent.addView(child1);
parent.addView(child2);
The code works for me. (after adding missing except
clause / import
statements)
Did you put \
in the original code?
urlToVisit = 'http://chartapi.finance.yahoo.com/instrument/1.0/' \
+ stock + '/chartdata;type=quote;range=5d/csv'
If you omit it, it could be a cause of the exception:
>>> stock = 'GOOG'
>>> urlToVisit = 'http://chartapi.finance.yahoo.com/instrument/1.0/'
>>> + stock + '/chartdata;type=quote;range=5d/csv'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: bad operand type for unary +: 'str'
BTW, string(e)
should be str(e)
.
I'll be using this Live Event from NASA TV as an example:
https://www.youtube.com/watch?v=21X5lGlDOfg
First, list the formats for the video:
$ ~ youtube-dl --list-formats https://www.youtube.com/watch\?v\=21X5lGlDOfg
[youtube] 21X5lGlDOfg: Downloading webpage
[youtube] 21X5lGlDOfg: Downloading m3u8 information
[youtube] 21X5lGlDOfg: Downloading MPD manifest
[info] Available formats for 21X5lGlDOfg:
format code extension resolution note
91 mp4 256x144 HLS 197k , avc1.42c00b, 30.0fps, mp4a.40.5@ 48k
92 mp4 426x240 HLS 338k , avc1.4d4015, 30.0fps, mp4a.40.5@ 48k
93 mp4 640x360 HLS 829k , avc1.4d401e, 30.0fps, mp4a.40.2@128k
94 mp4 854x480 HLS 1380k , avc1.4d401f, 30.0fps, mp4a.40.2@128k
300 mp4 1280x720 3806k , avc1.4d4020, 60.0fps, mp4a.40.2 (best)
Pick the format you wish to download, and fetch the HLS m3u8 URL of the video from the manifest. I'll be using 94 mp4 854x480 HLS 1380k , avc1.4d401f, 30.0fps, mp4a.40.2@128k
for this example:
? ~ youtube-dl -f 94 -g https://www.youtube.com/watch\?v\=21X5lGlDOfg
https://manifest.googlevideo.com/api/manifest/hls_playlist/expire/1592099895/ei/1y_lXuLOEsnXyQWYs4GABw/ip/81.190.155.248/id/21X5lGlDOfg.3/itag/94/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D135/hls_chunk_host/r5---sn-h0auphxqp5-f5fs.googlevideo.com/playlist_duration/30/manifest_duration/30/vprv/1/playlist_type/DVR/initcwndbps/8270/mh/N8/mm/44/mn/sn-h0auphxqp5-f5fs/ms/lva/mv/m/mvi/4/pl/16/dover/11/keepalive/yes/beids/9466586/mt/1592078245/disable_polymer/true/sparams/expire,ei,ip,id,itag,source,requiressl,ratebypass,live,goi,sgoap,sgovp,playlist_duration,manifest_duration,vprv,playlist_type/sig/AOq0QJ8wRgIhAM2dGSece2shUTgS73Qa3KseLqnf85ca_9u7Laz7IDfSAiEAj8KHw_9xXVS_PV3ODLlwDD-xfN6rSOcLVNBpxKgkRLI%3D/lsparams/hls_chunk_host,initcwndbps,mh,mm,mn,ms,mv,mvi,pl/lsig/AG3C_xAwRQIhAJCO6kSwn7PivqMW7sZaiYFvrultXl6Qmu9wppjCvImzAiA7vkub9JaanJPGjmB4qhLVpHJOb9fZyhMEeh1EUCd-3Q%3D%3D/playlist/index.m3u8
Note that link could be different and it contains expiration timestamp, in this case 1592099895 (about 6 hours).
Now that you have the HLS playlist, you can open this URL in VLC and save it using "Record", or write a small ffmpeg command:
ffmpeg -i \
https://manifest.googlevideo.com/api/manifest/hls_playlist/expire/1592099895/ei/1y_lXuLOEsnXyQWYs4GABw/ip/81.190.155.248/id/21X5lGlDOfg.3/itag/94/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D135/hls_chunk_host/r5---sn-h0auphxqp5-f5fs.googlevideo.com/playlist_duration/30/manifest_duration/30/vprv/1/playlist_type/DVR/initcwndbps/8270/mh/N8/mm/44/mn/sn-h0auphxqp5-f5fs/ms/lva/mv/m/mvi/4/pl/16/dover/11/keepalive/yes/beids/9466586/mt/1592078245/disable_polymer/true/sparams/expire,ei,ip,id,itag,source,requiressl,ratebypass,live,goi,sgoap,sgovp,playlist_duration,manifest_duration,vprv,playlist_type/sig/AOq0QJ8wRgIhAM2dGSece2shUTgS73Qa3KseLqnf85ca_9u7Laz7IDfSAiEAj8KHw_9xXVS_PV3ODLlwDD-xfN6rSOcLVNBpxKgkRLI%3D/lsparams/hls_chunk_host,initcwndbps,mh,mm,mn,ms,mv,mvi,pl/lsig/AG3C_xAwRQIhAJCO6kSwn7PivqMW7sZaiYFvrultXl6Qmu9wppjCvImzAiA7vkub9JaanJPGjmB4qhLVpHJOb9fZyhMEeh1EUCd-3Q%3D%3D/playlist/index.m3u8 \
-c copy output.ts
You need something like this:
foreach(DataColumn c in dr.Table.Columns)
{
MessageBox.Show(c.ColumnName);
}
You can do this with your axios by setting relative path to the corresponding images folder. I have done this for getting a json file. You can try the same method for an image file, you may refer these examples
If you have already set an axios instance with baseurl as a server in different domain, you will have to use the full path of the static file server where you deploy the web application.
axios.get('http://localhost:3000/assets/samplepic.png').then((response) => {
console.log(response)
}).catch((error) => {
console.log(error)
})
If the image is found the response will be 200 and if not, it will be 404.
Also, if the image file is present in assets folder inside src, you can do a require, get the path and do the above call with that path.
var SampleImagePath = require('./assets/samplepic.png');
axios.get(SampleImagePath).then(...)
I hope my late answer can be of some help.
This will go to rails database console.
rails db
pretty print your query output
.headers on
.mode columns
(turn headers on and show database data in column mode )
Show the tables
.table
'.help' to see help.
Or use SQL statements like 'Select * from cars'
I found this code which is giving me reliable results.
function distance($lat1, $lon1, $lat2, $lon2, $unit) {
$theta = $lon1 - $lon2;
$dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) + cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta));
$dist = acos($dist);
$dist = rad2deg($dist);
$miles = $dist * 60 * 1.1515;
$unit = strtoupper($unit);
if ($unit == "K") {
return ($miles * 1.609344);
} else if ($unit == "N") {
return ($miles * 0.8684);
} else {
return $miles;
}
}
results :
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "M") . " Miles<br>";
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "K") . " Kilometers<br>";
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "N") . " Nautical Miles<br>";
Use the random
module: http://docs.python.org/library/random.html
import random
random.sample(set([1, 2, 3, 4, 5, 6]), 2)
This samples the two values without replacement (so the two values are different).
I did the following I had the same mis match error in mac OS, I was trying to install an apk.
mv /usr/local/bin/adb /usr/local/bin/old_adb
brew cask install android-platform-tools
or brew reinstall --cask android-platform-tools
adb kill-server
adb start-server
If you are trying to install apk, reinstall and check.
If you need to be able to switch between more than two versions at a time, you can use the following to change the version of PHP manually.
MAMP automatically rewrites the following line in your /Applications/MAMP/conf/apache/httpd.conf file when it restarts based on the settings in preferences. You can comment out this line and add the second one to the end of your file:
# Comment this out just under all the modules loaded
# LoadModule php5_module /Applications/MAMP/bin/php/php5.x.x/modules/libphp5.so
At the bottom of the httpd.conf file, you'll see where additional configurations are loaded from the extra folder. Add this to the bottom of the httpd.conf file
# PHP Version Change
Include /Applications/MAMP/conf/apache/extra/httpd-php.conf
Then create a new file here: /Applications/MAMP/conf/apache/extra/httpd-php.conf
# Uncomment the version of PHP you want to run with MAMP
# LoadModule php5_module /Applications/MAMP/bin/php/php5.2.17/modules/libphp5.so
# LoadModule php5_module /Applications/MAMP/bin/php/php5.3.27/modules/libphp5.so
# LoadModule php5_module /Applications/MAMP/bin/php/php5.4.19/modules/libphp5.so
LoadModule php5_module /Applications/MAMP/bin/php/php5.5.3/modules/libphp5.so
After you have this setup, just uncomment the version of PHP you want to use and restart the servers!
Answer No 5 worked for me ,Suggestion to developer who are facing similar issue.
//////////////////////////////////////////////////////////
//Server side
//////////////////////////////////////////////////////////
imports ***
public class AgentExcelBuilder extends AbstractExcelView {
protected void buildExcelDocument(Map<String, Object> model,
HSSFWorkbook workbook, HttpServletRequest request,
HttpServletResponse response) throws Exception {
//poi code goes here ....
response.setHeader("Cache-Control","must-revalidate");
response.setHeader("Pragma", "public");
response.setHeader("Content-Transfer-Encoding","binary");
response.setHeader("Content-disposition", "attachment; filename=test.xls");
OutputStream output = response.getOutputStream();
workbook.write(output);
System.out.println(workbook.getActiveSheetIndex());
System.out.println(workbook.getNumberOfSheets());
System.out.println(workbook.getNumberOfNames());
output.flush();
output.close();
}//method buildExcelDocument ENDS
//service.js at angular JS code
function getAgentInfoExcel(workgroup,callback){
$http({
url: CONTEXT_PATH+'/rest/getADInfoExcel',
method: "POST",
data: workgroup, //this is your json data string
headers: {
'Content-type': 'application/json'
},
responseType: 'arraybuffer'
}).success(function (data, status, headers, config) {
var blob = new Blob([data], {type: "application/vnd.ms-excel"});
var objectUrl = URL.createObjectURL(blob);
window.open(objectUrl);
}).error(function (data, status, headers, config) {
console.log('Failed to download Excel')
});
}
////////////////////////////////in .html
<div class="form-group">`enter code here`
<a href="javascript:void(0)" class="fa fa-file-excel-o"
ng-click="exportToExcel();"> Agent Export</a>
</div>
The best way is to use different database groups. If you want to keep using the master database as usual ($this->db) just turn off persistent connexion configuration option to your secondary database(s). Only master database should work with persistent connexion :
Master database
$db['default']['hostname'] = "localhost";
$db['default']['username'] = "root";
$db['default']['password'] = "";
$db['default']['database'] = "database_name";
$db['default']['dbdriver'] = "mysql";
$db['default']['dbprefix'] = "";
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = FALSE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = "";
$db['default']['char_set'] = "utf8";
$db['default']['dbcollat'] = "utf8_general_ci";
$db['default']['swap_pre'] = "";
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
Secondary database (notice pconnect is set to false)
$db['otherdb']['hostname'] = "localhost";
$db['otherdb']['username'] = "root";
$db['otherdb']['password'] = "";
$db['otherdb']['database'] = "other_database_name";
$db['otherdb']['dbdriver'] = "mysql";
$db['otherdb']['dbprefix'] = "";
$db['otherdb']['pconnect'] = FALSE;
$db['otherdb']['db_debug'] = FALSE;
$db['otherdb']['cache_on'] = FALSE;
$db['otherdb']['cachedir'] = "";
$db['otherdb']['char_set'] = "utf8";
$db['otherdb']['dbcollat'] = "utf8_general_ci";
$db['otherdb']['swap_pre'] = "";
$db['otherdb']['autoinit'] = TRUE;
$db['otherdb']['stricton'] = FALSE;
Then you can use secondary databases as database objects while using master database as usual :
// use master dataabse
$users = $this->db->get('users');
// connect to secondary database
$otherdb = $this->load->database('otherdb', TRUE);
$stuff = $otherdb->get('struff');
$otherdb->insert_batch('users', $users->result_array());
// keep using master database as usual, for example insert stuff from other database
$this->db->insert_batch('stuff', $stuff->result_array());
The easiest way I have tested just add a <br>
as in the following:
<div class="col-sm-6">
<br><h3><p class="text-center">Some Text</p></h3>
</div>
The only problem is that a extra line break (generated by that <br>
) is generated when the screen gets smaller and it stacks. But it is quick and simple.
I have created an answer for this post that might help: https://stackoverflow.com/a/63816822/2399164
Summary:
I am a little late to the game but I believe I found a simple solution to this problem...
<?xml version="1.0" encoding="utf-8"?> <configuration> <packageSources> <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" /> <add key="{{CUSTOM NAME}}" value="{{CUSTOM SOURCE}}" /> </packageSources> <packageRestore> <add key="enabled" value="True" /> <add key="automatic" value="True" /> </packageRestore> <bindingRedirects> <add key="skip" value="False" /> </bindingRedirects> <packageManagement> <add key="format" value="0" /> <add key="disabled" value="False" /> </packageManagement> </configuration>
That is it! Create your "Dockerfile" here as well
Run docker build with your Dockerfile and all will get resolved
Try to use:
location.reload(true);
When this method receives a true
value as argument, it will cause the page to always be reloaded from the server. If it is false or not specified, the browser may reload the page from its cache.
More info:
Similar problem with an embarrassingly simple solution - make sure your API methods are public
. Leaving off any method access modifier will return an HTTP 404 too.
Will return 404:
List<CustomerInvitation> GetInvitations(){
Will execute as expected:
public List<CustomerInvitation> GetInvitations(){
Personally, I think the icons generated by the Google Charts API look great and are easy to customise dynamically.
See my answer on Google Maps API 3 - Custom marker color for default (dot) marker
2020 answer since I was missing the functionality to automatically delete a parameter, so:
Based on my favorite answer https://stackoverflow.com/a/20420424/6284674 : I combined it with the ability to:
automatically delete an URL param if the value if null
or ''
based on answer https://stackoverflow.com/a/25214672/6284674
optionally push the updated URL directly in the window.location bar
IE support since it's only using regex and no URLSearchParams
JSfiddle: https://jsfiddle.net/MickV/zxc3b47u/
function replaceUrlParam(url, paramName, paramValue){
if(paramValue == null || paramValue == "")
return url
.replace(new RegExp('[?&]' + paramValue + '=[^&#]*(#.*)?$'), '$1')
.replace(new RegExp('([?&])' + paramValue + '=[^&]*&'), '$1');
url = url.replace(/\?$/,'');
var pattern = new RegExp('\\b('+paramName+'=).*?(&|$)')
if(url.search(pattern)>=0){
return url.replace(pattern,'$1' + paramValue + '$2');
}
return url + (url.indexOf('?')>0 ? '&' : '?') + paramName + '=' + paramValue
}
// Orginal URL (default jsfiddle console URL)
//https://fiddle.jshell.net/_display/?editor_console=true
console.log(replaceUrlParam(window.location.href,'a','2'));
//https://fiddle.jshell.net/_display/?editor_console=true&a=2
console.log(replaceUrlParam(window.location.href,'a',''));
//https://fiddle.jshell.net/_display/?editor_console=true
console.log(replaceUrlParam(window.location.href,'a',3));
//https://fiddle.jshell.net/_display/?editor_console=true&a=3
console.log(replaceUrlParam(window.location.href,'a', null));
//https://fiddle.jshell.net/_display/?editor_console=true&
//Optionally also update the replaced URL in the window location bar
//Note: This does not work in JSfiddle, but it does in a normal browser
function pushUrl(url){
window.history.pushState("", "", replaceUrlParam(window.location.href,'a','2'));
}
pushUrl(replaceUrlParam(window.location.href,'a','2'));
//https://fiddle.jshell.net/_display/?editor_console=true&a=2
pushUrl(replaceUrlParam(window.location.href,'a',''));
//https://fiddle.jshell.net/_display/?editor_console=true
pushUrl(replaceUrlParam(window.location.href,'a',3));
//https://fiddle.jshell.net/_display/?editor_console=true&a=3
pushUrl(replaceUrlParam(window.location.href,'a', null));
//https://fiddle.jshell.net/_display/?editor_console=true&
in fragment class put this code for back event:
rootView.setFocusableInTouchMode(true);
rootView.requestFocus();
rootView.setOnKeyListener( new OnKeyListener()
{
@Override
public boolean onKey( View v, int keyCode, KeyEvent event )
{
if( keyCode == KeyEvent.KEYCODE_BACK )
{
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, new Book_service_provider()).commit();
return true;
}
return false;
}
} );
You can also use a unit-less value, which is the number of lines: line-height: 2;
is double spaced, line-height: 1.5;
is one and a half, etc.
Basically, eval
is used to evaluate a single dynamically generated Python expression, and exec
is used to execute dynamically generated Python code only for its side effects.
eval
and exec
have these two differences:
eval
accepts only a single expression, exec
can take a code block that has Python statements: loops, try: except:
, class
and function/method def
initions and so on.
An expression in Python is whatever you can have as the value in a variable assignment:
a_variable = (anything you can put within these parentheses is an expression)
eval
returns the value of the given expression, whereas exec
ignores the return value from its code, and always returns None
(in Python 2 it is a statement and cannot be used as an expression, so it really does not return anything).
In versions 1.0 - 2.7, exec
was a statement, because CPython needed to produce a different kind of code object for functions that used exec
for its side effects inside the function.
In Python 3, exec
is a function; its use has no effect on the compiled bytecode of the function where it is used.
Thus basically:
>>> a = 5
>>> eval('37 + a') # it is an expression
42
>>> exec('37 + a') # it is an expression statement; value is ignored (None is returned)
>>> exec('a = 47') # modify a global variable as a side effect
>>> a
47
>>> eval('a = 47') # you cannot evaluate a statement
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1
a = 47
^
SyntaxError: invalid syntax
The compile
in 'exec'
mode compiles any number of statements into a bytecode that implicitly always returns None
, whereas in 'eval'
mode it compiles a single expression into bytecode that returns the value of that expression.
>>> eval(compile('42', '<string>', 'exec')) # code returns None
>>> eval(compile('42', '<string>', 'eval')) # code returns 42
42
>>> exec(compile('42', '<string>', 'eval')) # code returns 42,
>>> # but ignored by exec
In the 'eval'
mode (and thus with the eval
function if a string is passed in), the compile
raises an exception if the source code contains statements or anything else beyond a single expression:
>>> compile('for i in range(3): print(i)', '<string>', 'eval')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1
for i in range(3): print(i)
^
SyntaxError: invalid syntax
Actually the statement "eval accepts only a single expression" applies only when a string (which contains Python source code) is passed to eval
. Then it is internally compiled to bytecode using compile(source, '<string>', 'eval')
This is where the difference really comes from.
If a code
object (which contains Python bytecode) is passed to exec
or eval
, they behave identically, excepting for the fact that exec
ignores the return value, still returning None
always. So it is possible use eval
to execute something that has statements, if you just compile
d it into bytecode before instead of passing it as a string:
>>> eval(compile('if 1: print("Hello")', '<string>', 'exec'))
Hello
>>>
works without problems, even though the compiled code contains statements. It still returns None
, because that is the return value of the code object returned from compile
.
In the 'eval'
mode (and thus with the eval
function if a string is passed in), the compile
raises an exception if the source code contains statements or anything else beyond a single expression:
>>> compile('for i in range(3): print(i)', '<string>'. 'eval')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1
for i in range(3): print(i)
^
SyntaxError: invalid syntax
exec
and eval
The exec
function (which was a statement in Python 2) is used for executing a dynamically created statement or program:
>>> program = '''
for i in range(3):
print("Python is cool")
'''
>>> exec(program)
Python is cool
Python is cool
Python is cool
>>>
The eval
function does the same for a single expression, and returns the value of the expression:
>>> a = 2
>>> my_calculation = '42 * a'
>>> result = eval(my_calculation)
>>> result
84
exec
and eval
both accept the program/expression to be run either as a str
, unicode
or bytes
object containing source code, or as a code
object which contains Python bytecode.
If a str
/unicode
/bytes
containing source code was passed to exec
, it behaves equivalently to:
exec(compile(source, '<string>', 'exec'))
and eval
similarly behaves equivalent to:
eval(compile(source, '<string>', 'eval'))
Since all expressions can be used as statements in Python (these are called the Expr
nodes in the Python abstract grammar; the opposite is not true), you can always use exec
if you do not need the return value. That is to say, you can use either eval('my_func(42)')
or exec('my_func(42)')
, the difference being that eval
returns the value returned by my_func
, and exec
discards it:
>>> def my_func(arg):
... print("Called with %d" % arg)
... return arg * 2
...
>>> exec('my_func(42)')
Called with 42
>>> eval('my_func(42)')
Called with 42
84
>>>
Of the 2, only exec
accepts source code that contains statements, like def
, for
, while
, import
, or class
, the assignment statement (a.k.a a = 42
), or entire programs:
>>> exec('for i in range(3): print(i)')
0
1
2
>>> eval('for i in range(3): print(i)')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1
for i in range(3): print(i)
^
SyntaxError: invalid syntax
Both exec
and eval
accept 2 additional positional arguments - globals
and locals
- which are the global and local variable scopes that the code sees. These default to the globals()
and locals()
within the scope that called exec
or eval
, but any dictionary can be used for globals
and any mapping
for locals
(including dict
of course). These can be used not only to restrict/modify the variables that the code sees, but are often also used for capturing the variables that the exec
uted code creates:
>>> g = dict()
>>> l = dict()
>>> exec('global a; a, b = 123, 42', g, l)
>>> g['a']
123
>>> l
{'b': 42}
(If you display the value of the entire g
, it would be much longer, because exec
and eval
add the built-ins module as __builtins__
to the globals automatically if it is missing).
In Python 2, the official syntax for the exec
statement is actually exec code in globals, locals
, as in
>>> exec 'global a; a, b = 123, 42' in g, l
However the alternate syntax exec(code, globals, locals)
has always been accepted too (see below).
compile
The compile(source, filename, mode, flags=0, dont_inherit=False, optimize=-1)
built-in can be used to speed up repeated invocations of the same code with exec
or eval
by compiling the source into a code
object beforehand. The mode
parameter controls the kind of code fragment the compile
function accepts and the kind of bytecode it produces. The choices are 'eval'
, 'exec'
and 'single'
:
'eval'
mode expects a single expression, and will produce bytecode that when run will return the value of that expression:
>>> dis.dis(compile('a + b', '<string>', 'eval'))
1 0 LOAD_NAME 0 (a)
3 LOAD_NAME 1 (b)
6 BINARY_ADD
7 RETURN_VALUE
'exec'
accepts any kinds of python constructs from single expressions to whole modules of code, and executes them as if they were module top-level statements. The code object returns None
:
>>> dis.dis(compile('a + b', '<string>', 'exec'))
1 0 LOAD_NAME 0 (a)
3 LOAD_NAME 1 (b)
6 BINARY_ADD
7 POP_TOP <- discard result
8 LOAD_CONST 0 (None) <- load None on stack
11 RETURN_VALUE <- return top of stack
'single'
is a limited form of 'exec'
which accepts a source code containing a single statement (or multiple statements separated by ;
) if the last statement is an expression statement, the resulting bytecode also prints the repr
of the value of that expression to the standard output(!).
An if
-elif
-else
chain, a loop with else
, and try
with its except
, else
and finally
blocks is considered a single statement.
A source fragment containing 2 top-level statements is an error for the 'single'
, except in Python 2 there is a bug that sometimes allows multiple toplevel statements in the code; only the first is compiled; the rest are ignored:
In Python 2.7.8:
>>> exec(compile('a = 5\na = 6', '<string>', 'single'))
>>> a
5
And in Python 3.4.2:
>>> exec(compile('a = 5\na = 6', '<string>', 'single'))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1
a = 5
^
SyntaxError: multiple statements found while compiling a single statement
This is very useful for making interactive Python shells. However, the value of the expression is not returned, even if you eval
the resulting code.
Thus greatest distinction of exec
and eval
actually comes from the compile
function and its modes.
In addition to compiling source code to bytecode, compile
supports compiling abstract syntax trees (parse trees of Python code) into code
objects; and source code into abstract syntax trees (the ast.parse
is written in Python and just calls compile(source, filename, mode, PyCF_ONLY_AST)
); these are used for example for modifying source code on the fly, and also for dynamic code creation, as it is often easier to handle the code as a tree of nodes instead of lines of text in complex cases.
While eval
only allows you to evaluate a string that contains a single expression, you can eval
a whole statement, or even a whole module that has been compile
d into bytecode; that is, with Python 2, print
is a statement, and cannot be eval
led directly:
>>> eval('for i in range(3): print("Python is cool")')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1
for i in range(3): print("Python is cool")
^
SyntaxError: invalid syntax
compile
it with 'exec'
mode into a code
object and you can eval
it; the eval
function will return None
.
>>> code = compile('for i in range(3): print("Python is cool")',
'foo.py', 'exec')
>>> eval(code)
Python is cool
Python is cool
Python is cool
If one looks into eval
and exec
source code in CPython 3, this is very evident; they both call PyEval_EvalCode
with same arguments, the only difference being that exec
explicitly returns None
.
exec
between Python 2 and Python 3One of the major differences in Python 2 is that exec
is a statement and eval
is a built-in function (both are built-in functions in Python 3).
It is a well-known fact that the official syntax of exec
in Python 2 is exec code [in globals[, locals]]
.
Unlike majority of the Python 2-to-3 porting guides seem to suggest, the exec
statement in CPython 2 can be also used with syntax that looks exactly like the exec
function invocation in Python 3. The reason is that Python 0.9.9 had the exec(code, globals, locals)
built-in function! And that built-in function was replaced with exec
statement somewhere before Python 1.0 release.
Since it was desirable to not break backwards compatibility with Python 0.9.9, Guido van Rossum added a compatibility hack in 1993: if the code
was a tuple of length 2 or 3, and globals
and locals
were not passed into the exec
statement otherwise, the code
would be interpreted as if the 2nd and 3rd element of the tuple were the globals
and locals
respectively. The compatibility hack was not mentioned even in Python 1.4 documentation (the earliest available version online); and thus was not known to many writers of the porting guides and tools, until it was documented again in November 2012:
The first expression may also be a tuple of length 2 or 3. In this case, the optional parts must be omitted. The form
exec(expr, globals)
is equivalent toexec expr in globals
, while the formexec(expr, globals, locals)
is equivalent toexec expr in globals, locals
. The tuple form ofexec
provides compatibility with Python 3, whereexec
is a function rather than a statement.
Yes, in CPython 2.7 that it is handily referred to as being a forward-compatibility option (why confuse people over that there is a backward compatibility option at all), when it actually had been there for backward-compatibility for two decades.
Thus while exec
is a statement in Python 1 and Python 2, and a built-in function in Python 3 and Python 0.9.9,
>>> exec("print(a)", globals(), {'a': 42})
42
has had identical behaviour in possibly every widely released Python version ever; and works in Jython 2.5.2, PyPy 2.3.1 (Python 2.7.6) and IronPython 2.6.1 too (kudos to them following the undocumented behaviour of CPython closely).
What you cannot do in Pythons 1.0 - 2.7 with its compatibility hack, is to store the return value of exec
into a variable:
Python 2.7.11+ (default, Apr 17 2016, 14:00:29)
[GCC 5.3.1 20160413] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> a = exec('print(42)')
File "<stdin>", line 1
a = exec('print(42)')
^
SyntaxError: invalid syntax
(which wouldn't be useful in Python 3 either, as exec
always returns None
), or pass a reference to exec
:
>>> call_later(exec, 'print(42)', delay=1000)
File "<stdin>", line 1
call_later(exec, 'print(42)', delay=1000)
^
SyntaxError: invalid syntax
Which a pattern that someone might actually have used, though unlikely;
Or use it in a list comprehension:
>>> [exec(i) for i in ['print(42)', 'print(foo)']
File "<stdin>", line 1
[exec(i) for i in ['print(42)', 'print(foo)']
^
SyntaxError: invalid syntax
which is abuse of list comprehensions (use a for
loop instead!).
For Mac with Docker Toolbox, ssh into the VM first with docker-machine ssh %VM-NAME%
and then check /var/log/docker.log
I came across a variation to this question where you need to reduce multiply spaces into one space "represent" the spaces.
This is my solution:
char str[] = "Put Your string Here.....";
int copyFrom = 0, copyTo = 0;
printf("Start String %s\n", str);
while (str[copyTo] != 0) {
if (str[copyFrom] == ' ') {
str[copyTo] = str[copyFrom];
copyFrom++;
copyTo++;
while ((str[copyFrom] == ' ') && (str[copyFrom] !='\0')) {
copyFrom++;
}
}
str[copyTo] = str[copyFrom];
if (str[copyTo] != '\0') {
copyFrom++;
copyTo++;
}
}
printf("Final String %s\n", str);
Hope it helps :-)
Do a SELECT COUNT(*) FROM ...
query instead.
I think its already been answered before, but just a correction if you are populating an unordered list, the *ngFor
will come in the element which you want to repeat. So it should be insdide <li>
. Also, Angular2 now uses let to declare a variable.
<ul>
<li *ngFor="let item of items; let i = index" [attr.data-index]="i">
{{item}}
</li>
</ul>
Try this:
if(myString != "-1")
The opperand is !=
and not =!
You can also use Equals
if(!myString.Equals("-1"))
Note the !
before myString
With version 2.13 of Git and later, --recurse-submodules
can be used instead of --recursive
:
git clone --recurse-submodules -j8 git://github.com/foo/bar.git
cd bar
Editor’s note: -j8
is an optional performance optimization that became available in version 2.8, and fetches up to 8 submodules at a time in parallel — see man git-clone
.
With version 1.9 of Git up until version 2.12 (-j
flag only available in version 2.8+):
git clone --recursive -j8 git://github.com/foo/bar.git
cd bar
With version 1.6.5 of Git and later, you can use:
git clone --recursive git://github.com/foo/bar.git
cd bar
For already cloned repos, or older Git versions, use:
git clone git://github.com/foo/bar.git
cd bar
git submodule update --init --recursive
Enter the submodule directory:
cd projB/projA
Pull the repo from you project A (will not update the git status of your parent, project B):
git pull origin master
Go back to the root directory & check update:
cd ..
git status
If the submodule updated before, it will show something like below:
# Not currently on any branch.
# Changed but not updated:
# (use "git add ..." to update what will be committed)
# (use "git checkout -- ..." to discard changes in working directory)
#
# modified: projB/projA (new commits)
#
Then, commit the update:
git add projB/projA
git commit -m "projA submodule updated"
UPDATE
As @paul pointed out, since git 1.8, we can use
git submodule update --remote --merge
to update the submodule to the latest remote commit. It'll be convenient in most cases.
If you want them to be displayed side by side, why is sideContent the child of mainContent? make them siblings then use:
float:left; display:inline; width: 49%;
on both of them.
#mainContent, #sideContent {float:left; display:inline; width: 49%;}
Fix urlpatterns
in urls.py file
For example, my app name is "simulator",
My URL pattern for login
and logout
looks like
urlpatterns = [
...
...
url(r'^login/$', simulator.views.login_view, name="login"),
url(r'^logout/$', simulator.views.logout_view, name="logout"),
...
...
]
You'll probably want the following.
List<EmailParameterClass> parameterList = new List<EmailParameterClass>{param1, param2, param3...};
parameterList.RemoveAll(item => item == null);
.erb-image-wrapper img{
max-width:100% !important;
height:auto;
display:block;
}
Worked for me.
Thanks for MrMisterMan for his assistance.
Simply quote your variable:
[ -e "$VAR" ]
This evaluates to [ -e "" ]
if $VAR
is empty.
Your version does not work because it evaluates to [ -e ]
. Now in this case, bash simply checks if the single argument (-e
) is a non-empty string.
From the manpage:
test and [ evaluate conditional expressions using a set of rules based on the number of arguments. ...
1 argument
The expression is true if and only if the argument is not null.
(Also, this solution has the additional benefit of working with filenames containing spaces)
In JavaScript and jQuery we can use the following code to redirect the one page to another page:
window.location.href="http://google.com";
window.location.replace("page1.html");
You need to make sure the IIS Management Console is installed.
If portability is not a concern, and you just want to get the pid on Windows without a lot of hassle while using code that is tested and known to work on all modern versions of Windows, you can use kohsuke's winp library. It is also available on Maven Central for easy consumption.
Process process = //...;
WinProcess wp = new WinProcess(process);
int pid = wp.getPid();
Use the SQLite keyword default
db.execSQL("CREATE TABLE " + DATABASE_TABLE + " ("
+ KEY_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
+ KEY_NAME + " TEXT NOT NULL, "
+ KEY_WORKED + " INTEGER, "
+ KEY_NOTE + " INTEGER DEFAULT 0);");
This link is useful: http://www.sqlite.org/lang_createtable.html
You can also do this in a .htaccess file assuming they are enabled on the website.
SetEnv KOHANA_ENV production
Would be all you need to add to a .htaccess to add the environment variable
This is way late to answer but it will work for latest python users:
from bs4 import BeautifulSoup
import requests
html_page = requests.get('http://www.example.com').text
soup = BeautifulSoup(html_page, "lxml")
for link in soup.findAll('a'):
print(link.get('href'))
Don't forget to install "requests" and "BeautifulSoup" package and also "lxml". Use .text along with get otherwise it will throw an exception.
"lxml" is used to remove that warning of which parser to be used. You can also use "html.parser" whichever fits your case.
The Mythical Man-Month by Fred Brooks http://en.wikipedia.org/wiki/The_Mythical_Man-Month
Use this to obtain only the filename.
Path.GetFileName(files[0]);
I'd rather like to answer comprehensively.
LocalbroadcastManager included in android 3.0 and above so you have to use support library v4 for early releases. see instructions here
Create a broadcast receiver:
private BroadcastReceiver onNotice= new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// intent can contain anydata
Log.d("sohail","onReceive called");
tv.setText("Broadcast received !");
}
};
Register your receiver in onResume of activity like:
protected void onResume() {
super.onResume();
IntentFilter iff= new IntentFilter(MyIntentService.ACTION);
LocalBroadcastManager.getInstance(this).registerReceiver(onNotice, iff);
}
//MyIntentService.ACTION is just a public static string defined in MyIntentService.
unRegister receiver in onPause:
protected void onPause() {
super.onPause();
LocalBroadcastManager.getInstance(this).unregisterReceiver(onNotice);
}
Now whenever a localbroadcast is sent from applications' activity or service, onReceive of onNotice will be called :).
Edit: You can read complete tutorial here LocalBroadcastManager: Intra application message passing
For anyone still looking for an answer, this works like a charm and does away with any dateadds. The timestamp is optional, in case it needs specifying, but works without as well.
SELECT left(convert(varchar, getdate(),23),7)+'-01 00:00:00'
In a similar situation. As a result of many years of torment with many programmers who were able to stuff different encodings of the ends of lines (.asp, .js, .css ... not the essence) into one file. Some time ago refused .gitattributes. Settings for repo left autorclf = true
andsafecrlf = warn
.
The last problem arose when synchronizing from the archive with different ends of lines. After copying from the archive, in the git status many files are changed with the note
The line will have its original line endings in your working directory.
warning: LF will be replaced by CRLF in ...
Tips from How to normalize working tree line endings in Git? helped
git add -u
try
subtotal.value= 5 // some value
proc = async function(x,y) {_x000D_
let url = "https://server.test-cors.org/server?id=346169&enable=true&status=200&credentials=false&methods=GET&" // some url working in snippet_x000D_
_x000D_
let r= await(await fetch(url+'&prodid=' + x + '&qbuys=' + y)).json(); // return json-object_x000D_
console.log(r);_x000D_
_x000D_
subtotal.value= r.length; // example value from json_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
_x000D_
<form name="yoh" method="get"> _x000D_
Product id: <input type="text" id="pid" value=""><br/>_x000D_
_x000D_
Quantity to buy:<input type="text" id="qtytobuy" value="" onkeyup="proc(pid.value, this.value);"></br>_x000D_
_x000D_
Subtotal:<input type="text" name="subtotal" id="subtotal" value=""></br>_x000D_
<div id="compz"></div>_x000D_
_x000D_
</form>
_x000D_
I use HttpWebRequest to GET from the web service, which returns me a JSON string. It looks something like this for a GET:
// Returns JSON string
string GET(string url)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
try {
WebResponse response = request.GetResponse();
using (Stream responseStream = response.GetResponseStream()) {
StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.UTF8);
return reader.ReadToEnd();
}
}
catch (WebException ex) {
WebResponse errorResponse = ex.Response;
using (Stream responseStream = errorResponse.GetResponseStream())
{
StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.GetEncoding("utf-8"));
String errorText = reader.ReadToEnd();
// log errorText
}
throw;
}
}
I then use JSON.Net to dynamically parse the string. Alternatively, you can generate the C# class statically from sample JSON output using this codeplex tool: http://jsonclassgenerator.codeplex.com/
POST looks like this:
// POST a JSON string
void POST(string url, string jsonContent)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
Byte[] byteArray = encoding.GetBytes(jsonContent);
request.ContentLength = byteArray.Length;
request.ContentType = @"application/json";
using (Stream dataStream = request.GetRequestStream()) {
dataStream.Write(byteArray, 0, byteArray.Length);
}
long length = 0;
try {
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) {
length = response.ContentLength;
}
}
catch (WebException ex) {
// Log exception and throw as for GET example above
}
}
I use code like this in automated tests of our web service.