Using LINQ you can do it like this:
var table_enum = table
// Convert to IEnumerable<string>
.OfType<string>()
// Create anonymous type where Index1 and Index2
// reflect the indices of the 2-dim. array
.Select((_string, _index) => new {
Index1 = (_index / 2),
Index2 = (_index % 2), // ? I added this only for completeness
Value = _string
})
// Group by Index1, which generates IEnmurable<string> for all Index1 values
.GroupBy(v => v.Index1)
// Convert all Groups of anonymous type to String-Arrays
.Select(group => group.Select(v => v.Value).ToArray());
// Now you can use the foreach-Loop as you planned
foreach(string[] str_arr in table_enum) {
// …
}
This way it is also possible to use the foreach for looping through the columns instead of the rows by using Index2 in the GroupBy instead of Index 1. If you don't know the dimension of your array then you have to use the GetLength() method to determine the dimension and use that value in the quotient.
According to the fine manual, createConnection()
can be used to connect to multiple databases.
However, you need to create separate models for each connection/database:
var conn = mongoose.createConnection('mongodb://localhost/testA');
var conn2 = mongoose.createConnection('mongodb://localhost/testB');
// stored in 'testA' database
var ModelA = conn.model('Model', new mongoose.Schema({
title : { type : String, default : 'model in testA database' }
}));
// stored in 'testB' database
var ModelB = conn2.model('Model', new mongoose.Schema({
title : { type : String, default : 'model in testB database' }
}));
I'm pretty sure that you can share the schema between them, but you have to check to make sure.
A LinkedList can be used as a Queue - but you need to use it right. Here is an example code :
@Test
public void testQueue() {
LinkedList<Integer> queue = new LinkedList<>();
queue.add(1);
queue.add(2);
System.out.println(queue.pop());
System.out.println(queue.pop());
}
Output :
1
2
Remember, if you use push instead of add ( which you will very likely do intuitively ), this will add element at the front of the list, making it behave like a stack.
So this is a Queue only if used in conjunction with add.
Try this :
@Test
public void testQueue() {
LinkedList<Integer> queue = new LinkedList<>();
queue.push(1);
queue.push(2);
System.out.println(queue.pop());
System.out.println(queue.pop());
}
Output :
2
1
This is the best way, I know of to create dynamic variables in python.
my_dict = {}
x = "Buffalo"
my_dict[x] = 4
I found a similar, but not the same question here Creating dynamically named variables from user input
Modern browsers will take script tags in the body like so:
<body>
<script src="scripts/main.js"></script>
</body>
Basically, it means that the script will be loaded once the page has finished, which may be useful in certain cases (namely DOM manipulation). However, I highly recommend you take the same script and put it in the head tag with "defer", as it will give the same effect.
<head>
<script src="scripts/main.js" defer></script>
</head>
Set alias: (based on the top answer)
git config --global alias.track-all-branches '!git fetch --all && for remote in `git branch -r`; do git branch --track ${remote#origin/} $remote; done && git fetch --all'
Now to track all the branches:
git track-all-branches
Try the following code with an added request property:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
public class SocketConnection
{
public static String getURLSource(String url) throws IOException
{
URL urlObject = new URL(url);
URLConnection urlConnection = urlObject.openConnection();
urlConnection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.95 Safari/537.11");
return toString(urlConnection.getInputStream());
}
private static String toString(InputStream inputStream) throws IOException
{
try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8")))
{
String inputLine;
StringBuilder stringBuilder = new StringBuilder();
while ((inputLine = bufferedReader.readLine()) != null)
{
stringBuilder.append(inputLine);
}
return stringBuilder.toString();
}
}
}
For a complete removal of Xcode 10 delete the following:
/Applications/Xcode.app
~/Library/Caches/com.apple.dt.Xcode
~/Library/Developer
~/Library/MobileDevice
~/Library/Preferences/com.apple.dt.Xcode.plist
/Library/Preferences/com.apple.dt.Xcode.plist
/System/Library/Receipts/com.apple.pkg.XcodeExtensionSupport.bom
/System/Library/Receipts/com.apple.pkg.XcodeExtensionSupport.plist
/System/Library/Receipts/com.apple.pkg.XcodeSystemResources.bom
/System/Library/Receipts/com.apple.pkg.XcodeSystemResources.plist
/private/var/db/receipts/com.apple.pkg.Xcode.bom
But instead of 11, open up /private/var/
in the Finder and search for "Xcode" to see all the 'dna' left behind... and selectively clean that out too. I would post the pathnames but they will include randomized folder names which will not be the same from my Mac to yours.
but if you don't want to lose all of your customizations, consider saving these files or folders before deleting anything:
~/Library/Developer/Xcode/UserData/CodeSnippets
~/Library/Developer/Xcode/UserData/FontAndColorThemes
~/Library/Developer/Xcode/UserData/KeyBindings
~/Library/Developer/Xcode/Templates
~/Library/Preferences/com.apple.dt.Xcode.plist
~/Library/MobileDevice/Provisioning Profiles
If you have no other links, then there is no use for navbar-header....
HTML:
<nav class="navbar navbar-inverse navbar-static-top">
<div class="container">
<a class="navbar-brand text-center center-block" href="#">Navbar Brand</a>
.....
</nav>
CSS:
.navbar-brand {
float: none;
}
However, if you do want other links here's a very effective approach that allows that: https://stackoverflow.com/a/34149840/3123861
I have never come across a situation where one needs to call a destructor manually. I seem to remember even Stroustrup claims it is bad practice.
In sublime text, you simply write the two word you are interested in keeping for example in your case it is
"This is" and "sentence"
and you write .* in between
i.e. This is .* sentence
and this should do you well
You're comparing the object references, and they are not the same. You need to compare the array contents.
An option is iterating through the array elements and call Equals()
for each element. Remember that you need to override the Equals()
method for the array elements, if they are not the same object reference.
An alternative is using this generic method to compare two generic arrays:
static bool ArraysEqual<T>(T[] a1, T[] a2)
{
if (ReferenceEquals(a1, a2))
return true;
if (a1 == null || a2 == null)
return false;
if (a1.Length != a2.Length)
return false;
var comparer = EqualityComparer<T>.Default;
for (int i = 0; i < a1.Length; i++)
{
if (!comparer.Equals(a1[i], a2[i])) return false;
}
return true;
}
Or use SequenceEqual if Linq is available for you (.NET Framework >= 3.5)
Deleting .gradle
as suggested by Suragch wasn't enough for me. Additionally, I had to perform a Build > Clean Project
.
Note that, in order to see .gradle
, you need to switch to the "Project" view in the navigator on the top left:
There are actually two ways to add a favicon to a website.
<link rel="icon">
Simply add the following code to the <head>
element:
<link rel="icon" href="http://example.com/favicon.png">
PNG favicons are supported by most browsers, except IE <= 10. For backwards compatibility, you can use ICO favicons.
Note that you don't have to precede icon
in rel
attribute with shortcut
anymore. From MDN Link types:
The
shortcut
link type is often seen beforeicon
, but this link type is non-conforming, ignored and web authors must not use it anymore.
favicon.ico
in the root directoryFrom another SO answer (by @mercator):
All modern browsers (tested with Chrome 4, Firefox 3.5, IE8, Opera 10 and Safari 4) will always request a
favicon.ico
unless you've specified a shortcut icon via<link>
.
So all you have to do is to make the /favicon.ico
request to your website return your favicon. This option unfortunately doesn't allow you to use a PNG icon.
See also favicon.png vs favicon.ico - why should I use PNG instead of ICO?
I just replicate the 2 attributes of the btn-navbar
(data-toggle="collapse" data-target=".nav-collapse.in"
) on each link like this:
<div class="nav-collapse">
<ul class="nav" >
<li class="active"><a href="#home" data-toggle="collapse" data-target=".nav-collapse.in">Home</a></li>
<li><a href="#about" data-toggle="collapse" data-target=".nav-collapse.in">About</a></li>
<li><a href="#portfolio" data-toggle="collapse" data-target=".nav-collapse.in">Portfolio</a></li>
<li><a href="#services" data-toggle="collapse" data-target=".nav-collapse.in">Services</a></li>
<li><a href="#contact" data-toggle="collapse" data-target=".nav-collapse.in">Contact</a></li>
</ul>
</div>
In the Bootstrap 4 Navbar, in
has changed to show
so the syntax would be:
data-toggle="collapse" data-target=".navbar-collapse.show"
I like the concept of grouping RadioButtons in WPF. There is a property GroupName
that specifies which RadioButton controls are mutually exclusive (http://msdn.microsoft.com/de-de/library/system.windows.controls.radiobutton.aspx).
So I wrote a derived class for WinForms that supports this feature:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.Windows.Forms.VisualStyles;
using System.Drawing;
using System.ComponentModel;
namespace Use.your.own
{
public class AdvancedRadioButton : CheckBox
{
public enum Level { Parent, Form };
[Category("AdvancedRadioButton"),
Description("Gets or sets the level that specifies which RadioButton controls are affected."),
DefaultValue(Level.Parent)]
public Level GroupNameLevel { get; set; }
[Category("AdvancedRadioButton"),
Description("Gets or sets the name that specifies which RadioButton controls are mutually exclusive.")]
public string GroupName { get; set; }
protected override void OnCheckedChanged(EventArgs e)
{
base.OnCheckedChanged(e);
if (Checked)
{
var arbControls = (dynamic)null;
switch (GroupNameLevel)
{
case Level.Parent:
if (this.Parent != null)
arbControls = GetAll(this.Parent, typeof(AdvancedRadioButton));
break;
case Level.Form:
Form form = this.FindForm();
if (form != null)
arbControls = GetAll(this.FindForm(), typeof(AdvancedRadioButton));
break;
}
if (arbControls != null)
foreach (Control control in arbControls)
if (control != this &&
(control as AdvancedRadioButton).GroupName == this.GroupName)
(control as AdvancedRadioButton).Checked = false;
}
}
protected override void OnClick(EventArgs e)
{
if (!Checked)
base.OnClick(e);
}
protected override void OnPaint(PaintEventArgs pevent)
{
CheckBoxRenderer.DrawParentBackground(pevent.Graphics, pevent.ClipRectangle, this);
RadioButtonState radioButtonState;
if (Checked)
{
radioButtonState = RadioButtonState.CheckedNormal;
if (Focused)
radioButtonState = RadioButtonState.CheckedHot;
if (!Enabled)
radioButtonState = RadioButtonState.CheckedDisabled;
}
else
{
radioButtonState = RadioButtonState.UncheckedNormal;
if (Focused)
radioButtonState = RadioButtonState.UncheckedHot;
if (!Enabled)
radioButtonState = RadioButtonState.UncheckedDisabled;
}
Size glyphSize = RadioButtonRenderer.GetGlyphSize(pevent.Graphics, radioButtonState);
Rectangle rect = pevent.ClipRectangle;
rect.Width -= glyphSize.Width;
rect.Location = new Point(rect.Left + glyphSize.Width, rect.Top);
RadioButtonRenderer.DrawRadioButton(pevent.Graphics, new System.Drawing.Point(0, rect.Height / 2 - glyphSize.Height / 2), rect, this.Text, this.Font, this.Focused, radioButtonState);
}
private IEnumerable<Control> GetAll(Control control, Type type)
{
var controls = control.Controls.Cast<Control>();
return controls.SelectMany(ctrl => GetAll(ctrl, type))
.Concat(controls)
.Where(c => c.GetType() == type);
}
}
}
On Ubuntu, I had to delete /tmp/pip-build-root
.
This is an old question and its been answered but I thought I'd put the --binary-files=text option here for anyone who wants to use it. The -I option ignores the binary file but if you want the grep to treat the binary file as a text file use --binary-files=text like so:
bash$ grep -i reset mediaLog*
Binary file mediaLog_dc1.txt matches
bash$ grep --binary-files=text -i reset mediaLog*
mediaLog_dc1.txt:2016-06-29 15:46:02,470 - Media [uploadChunk ,315] - ERROR - ('Connection aborted.', error(104, 'Connection reset by peer'))
mediaLog_dc1.txt:ConnectionError: ('Connection aborted.', error(104, 'Connection reset by peer'))
bash$
You can create new User library,
On
"Configure Build Paths" page -> Add Library -> User Library (on list) -> User Libraries Button (rigth side of page)
and create your library and (add Jars buttons) include your specific Jars.
I hope this can help you.
Png files can handle transparency.
So you could use this question Save plot to image file instead of displaying it using Matplotlib so as to save you graph as a png
file.
And if you want to turn all white pixel transparent, there's this other question : Using PIL to make all white pixels transparent?
If you want to turn an entire area to transparent, then there's this question: And then use the PIL library like in this question Python PIL: how to make area transparent in PNG? so as to make your graph transparent.
If you are talking about two kinds of enitities, say teachers and students, you would create two tables for each and a third one to store the relationship. This third table can have two columns, say teacherID and StudentId. If this is not what you are looking for, please elaborate your question.
Took me 2 hours to figure this out
import numpy as np
import pandas as pd
from sklearn.datasets import load_iris
iris = load_iris()
##iris.keys()
df= pd.DataFrame(data= np.c_[iris['data'], iris['target']],
columns= iris['feature_names'] + ['target'])
df['species'] = pd.Categorical.from_codes(iris.target, iris.target_names)
Get back the species for my pandas
You haven't properly cased your onchange
prop in the input
. It needs to be onChange
in JSX.
<input
type="text"
value={this.props.searchString}
ref="searchStringInput"
onchange={this.handleChange} <--[should be onChange]
/>
The topic of passing a value
prop to an <input>
, and then somehow changing the value passed in response to user interaction using an onChange
handler is pretty well-considered in the docs.
They refer to such inputs as Controlled Components, and refer to inputs that instead let the DOM natively handle the input's value and subsequent changes from the user as Uncontrolled Components.
Whenever you set the value
prop of an input
to some variable, you have a Controlled Component. This means you must change the value of the variable by some programmatic means or else the input will always hold that value and will never change, even when you type -- the native behaviour of the input, to update its value on typing, is overridden by React here.
So, you're correctly taking that variable from state, and have a handler to update the state all set up fine. The problem was because you have onchange
and not the correct onChange
the handler was never being called and so the value
was never being updated when you type into the input. When you do use onChange
the handler is called, the value
is updated when you type, and you see your changes.
Well... These are PHP. There is an sms one from google here.
And github has one here.
Another sms one is here. However, this one has a lot more code, so it may take up more space.
I've faced the same issue, the possible reason is due to parallel execution of testng and the solution is to add Priority option or simply update preserve-order="true" in your testng.xml.
<test name="Firefox Test" preserve-order="true">
this answer based on @genesis answer, at first I tried the bookmark version @jondavidjohn, and it is not working, so I change it to this (add it to your bookmark):
javascript:(function(){var s = document.createElement('script');s.src = "//code.jquery.com/jquery-2.2.4.min.js";document.getElementsByTagName('head')[0].appendChild(s);console.log('jquery loaded')}());
words of caution, is not tested in chrome but work in firefox, and not tested in conflict environment.
I asked myself the very same questions. When I looked into it I found the choices overwhelming.
Fortunately I found this excellent spreadsheet that helps you choice the best loader based on your requirements:
https://spreadsheets.google.com/lv?key=tDdcrv9wNQRCNCRCflWxhYQ
.switch {_x000D_
position: relative;_x000D_
display: inline-block;_x000D_
width: 90px;_x000D_
height: 34px;_x000D_
}_x000D_
_x000D_
.switch input {display:none;}_x000D_
_x000D_
.slider {_x000D_
position: absolute;_x000D_
cursor: pointer;_x000D_
top: 0;_x000D_
left: 0;_x000D_
right: 0;_x000D_
bottom: 0;_x000D_
background-color: #ca2222;_x000D_
-webkit-transition: .4s;_x000D_
transition: .4s;_x000D_
}_x000D_
_x000D_
.slider:before {_x000D_
position: absolute;_x000D_
content: "";_x000D_
height: 26px;_x000D_
width: 26px;_x000D_
left: 4px;_x000D_
bottom: 4px;_x000D_
background-color: white;_x000D_
-webkit-transition: .4s;_x000D_
transition: .4s;_x000D_
}_x000D_
_x000D_
input:checked + .slider {_x000D_
background-color: #2ab934;_x000D_
}_x000D_
_x000D_
input:focus + .slider {_x000D_
box-shadow: 0 0 1px #2196F3;_x000D_
}_x000D_
_x000D_
input:checked + .slider:before {_x000D_
-webkit-transform: translateX(55px);_x000D_
-ms-transform: translateX(55px);_x000D_
transform: translateX(55px);_x000D_
}_x000D_
_x000D_
/*------ ADDED CSS ---------*/_x000D_
.on_x000D_
{_x000D_
display: none;_x000D_
}_x000D_
_x000D_
.on, .off_x000D_
{_x000D_
color: white;_x000D_
position: absolute;_x000D_
transform: translate(-50%,-50%);_x000D_
top: 50%;_x000D_
left: 50%;_x000D_
font-size: 10px;_x000D_
font-family: Verdana, sans-serif;_x000D_
}_x000D_
_x000D_
input:checked+ .slider .on_x000D_
{display: block;}_x000D_
_x000D_
input:checked + .slider .off_x000D_
{display: none;}_x000D_
_x000D_
/*--------- END --------*/_x000D_
_x000D_
/* Rounded sliders */_x000D_
.slider.round {_x000D_
border-radius: 34px;_x000D_
}_x000D_
_x000D_
.slider.round:before {_x000D_
border-radius: 50%;}
_x000D_
<label class="switch"><input type="checkbox" id="togBtn"><div class="slider round"><!--ADDED HTML --><span class="on">Confirmed</span><span class="off">NA</span><!--END--></div></label>
_x000D_
Process text to and from Unicode at the I/O boundaries of your program using open
with the encoding
parameter. Make sure to use the (hopefully documented) encoding of the file being read. The default encoding varies by OS (specifically, locale.getpreferredencoding(False)
is the encoding used), so I recommend always explicitly using the encoding
parameter for portability and clarity (Python 3 syntax below):
with open(filename, 'r', encoding='utf8') as f:
text = f.read()
# process Unicode text
with open(filename, 'w', encoding='utf8') as f:
f.write(text)
If still using Python 2 or for Python 2/3 compatibility, the io
module implements open
with the same semantics as Python 3's open
and exists in both versions:
import io
with io.open(filename, 'r', encoding='utf8') as f:
text = f.read()
# process Unicode text
with io.open(filename, 'w', encoding='utf8') as f:
f.write(text)
SELECT * FROM `calendar` WHERE DATE_FORMAT(startTime, "%Y-%m-%d") = '2010-04-29'"
OR
SELECT * FROM `calendar` WHERE DATE(startTime) = '2010-04-29'
The jQuery plugin page is down. So manually:
function strpad00(s)
{
s = s + '';
if (s.length === 1) s = '0'+s;
return s;
}
var now = new Date();
var currentDate = now.getFullYear()+ "/" + strpad00(now.getMonth()+1) + "/" + strpad00(now.getDate());
console.log(currentDate );
I would recommend NOT to use global
/ window
/ eval
for this purpose.
Instead, do it this way:
define all methods as properties of Handler:
var Handler={};
Handler.application_run = function (name) {
console.log(name)
}
Now call it like this
var somefunc = "application_run";
Handler[somefunc]('jerry');
Output: jerry
Case when importing functions from different files
import { func1, func2 } from "../utility";
const Handler= {
func1,
func2
};
Handler["func1"]("sic mundus");
Handler["func2"]("creatus est");
Java has a special kind of thread called daemon thread.
What are daemon threads used for?
Normally used as service providers for normal threads. Usually have an infinite loop that waits for the service request or performs the tasks of the thread. They can’t do important jobs. (Because we don't know when they are going to have CPU time and they can finish any time if there aren't any other threads running. )
A typical example of these kind of threads is the Java garbage collector.
There's more...
setDaemon()
method before you call the start()
method. Once the thread is running, you can’t modify its daemon status.isDaemon()
method to check if a thread is a daemon thread or a user thread.Your server tells you exactly what you need : [Hint: SSLProxyEngine]
You need to add that directive to your VirtualHost
before the Proxy
directives :
SSLProxyEngine on
ProxyPass /primary/store https://localhost:9763/store/
ProxyPassReverse /primary/store https://localhost:9763/store/
beforeShow: function(el) {
if ( el.getAttribute("readonly") !== null ) {
if ( (el.value == null) || (el.value == '') ) {
$(el).datepicker( "option", "minDate", +1 );
$(el).datepicker( "option", "maxDate", -1 );
} else {
$(el).datepicker( "option", "minDate", el.value );
$(el).datepicker( "option", "maxDate", el.value );
}
}
},
If you are trying to write straightforward, yet forbidden code like this:
public class Person
{
public enum Gender
{
Male,
Female
}
//Won't compile: auto-property has same name as enum
public Gender Gender { get; set; }
}
Your options are:
Ignore the MS recommendation and use a prefix or suffix on the enum name:
public class Person
{
public enum GenderEnum
{
Male,
Female
}
public GenderEnum Gender { get; set; }
}
Move the enum definition outside the class, preferably into another class. Here is an easy solution to the above:
public class Characteristics
{
public enum Gender
{
Male,
Female
}
}
public class Person
{
public Characteristics.Gender Gender { get; set; }
}
I personally prefer using the following code if it is for a single link. Otherwise it's probably best if you create a function with similar code.
onclick="this.target='_blank';"
I started using that to bypass the W3C's XHTML strict test.
Another example using COALESCE. http://sqlmag.com/t-sql/coalesce-vs-isnull
SELECT (COALESCE(SUM(val1),0) + COALESCE(SUM(val2), 0)
+ COALESCE(SUM(val3), 0) + COALESCE(SUM(val4), 0)) AS 'TOTAL'
FROM Emp
Wait a few minutes. The application will start automatically
Building on Daniel's answer (additions):
class Foo(object):
counter = 0
def __call__(self, inc_value=0):
Foo.counter += inc_value
return Foo.counter
foo = Foo()
def use_foo(x,y):
if(x==5):
foo(2)
elif(y==7):
foo(3)
if(foo() == 10):
print("yello")
use_foo(5,1)
use_foo(5,1)
use_foo(1,7)
use_foo(1,7)
use_foo(1,1)
The reason why I wanted to add this part is , static variables are used not only for incrementing by some value, but also check if the static var is equal to some value, as a real life example.
The static variable is still protected and used only within the scope of the function use_foo()
In this example, call to foo() functions exactly as(with respect to the corresponding c++ equivalent) :
stat_c +=9; // in c++
foo(9) #python equiv
if(stat_c==10){ //do something} // c++
if(foo() == 10): # python equiv
#add code here # python equiv
Output :
yello
yello
if class Foo is defined restrictively as a singleton class, that would be ideal. This would make it more pythonic.
//add cookie
var panelIdCookie = new HttpCookie("panelIdCookie");
panelIdCookie.Values.Add("panelId", panelId.ToString(CultureInfo.InvariantCulture));
panelIdCookie.Expires = DateTime.Now.AddMonths(2);
Response.Cookies.Add(panelIdCookie);
//read cookie
var httpCookie = Request.Cookies["panelIdCookie"];
if (httpCookie != null)
{
panelId = Convert.ToInt32(httpCookie["panelId"]);
}
It might be easier to use JavaScript or jquery for this. Assuming that the height of the header and the footer is 200 then the code will be:
function SetHeight(){
var h = $(window).height();
$("#inner-right").height(h-200);
}
$(document).ready(SetHeight);
$(window).resize(SetHeight);
I'm not sure how FWIX.com is doing it specifically, but I'd wager they are using Custom Overlays.
Here is a more modular and cleaner way to circle crop your bitmap in Glide:
BitmapTransformation
then override transform
method like this : For Glide 4.x.x
public class CircularTransformation extends BitmapTransformation {
@Override
protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
RoundedBitmapDrawable circularBitmapDrawable =
RoundedBitmapDrawableFactory.create(null, toTransform);
circularBitmapDrawable.setCircular(true);
Bitmap bitmap = pool.get(outWidth, outHeight, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
circularBitmapDrawable.setBounds(0, 0, outWidth, outHeight);
circularBitmapDrawable.draw(canvas);
return bitmap;
}
@Override
public void updateDiskCacheKey(MessageDigest messageDigest) {}
}
For Glide 3.x.x
public class CircularTransformation extends BitmapTransformation {
@Override
protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
RoundedBitmapDrawable circularBitmapDrawable =
RoundedBitmapDrawableFactory.create(null, toTransform);
circularBitmapDrawable.setCircular(true);
Bitmap bitmap = pool.get(outWidth, outHeight, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
circularBitmapDrawable.setBounds(0, 0, outWidth, outHeight);
circularBitmapDrawable.draw(canvas);
return bitmap;
}
@Override
public String getId() {
// Return some id that uniquely identifies your transformation.
return "CircularTransformation";
}
}
Glide.with(yourActivity)
.load(yourUrl)
.asBitmap()
.transform(new CircularTransformation())
.into(yourView);
Hope this helps :)
why do I have to pass seconds = uptime to timedelta
Because timedelta objects can be passed seconds, milliseconds, days, etc... so you need to specify what are you passing in (this is why you use the explicit key). Typecasting to int
is superfluous as they could also accept floats.
and why does the string casting works so nicely that I get HH:MM:SS ?
It's not the typecasting that formats, is the internal __str__
method of the object. In fact you will achieve the same result if you write:
print datetime.timedelta(seconds=int(uptime))
$datediff = floor(strtotime($date1)/(60*60*24)) - floor(strtotime($date2)/(60*60*24));
and, if needed:
$datediff=abs($datediff);
Presumably, if one wants to use an OnTouchListener
rather than an OnClickListener
, then the extra functionality of the OnTouchListener
is needed. This is a supplemental answer to show more detail of how an OnTouchListener
can be used.
Define the listener
Put this somewhere in your activity or fragment.
private View.OnTouchListener handleTouch = new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
int x = (int) event.getX();
int y = (int) event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
Log.i("TAG", "touched down");
break;
case MotionEvent.ACTION_MOVE:
Log.i("TAG", "moving: (" + x + ", " + y + ")");
break;
case MotionEvent.ACTION_UP:
Log.i("TAG", "touched up");
break;
}
return true;
}
};
Set the listener
Set the listener in onCreate
(for an Activity) or onCreateView
(for a Fragment).
myView.setOnTouchListener(handleTouch);
Notes
getX
and getY
give you the coordinates relative to the view (that is, the top left corner of the view). They will be negative when moving above or to the left of your view. Use getRawX
and getRawY
if you want the absolute screen coordinates.x
and y
values to determine things like swipe direction.Thanks for your feed back got it to work I used the sshpass tool.
sshpass -p 'password' scp [email protected]:sys_config /var/www/dev/
Follow the following steps
UIView
.MyView.xib
.UIViewController
from NSObject
in xib. See the image below
Connect the File Owner View to your View. See the image below
Change the class of your View to MyView
. Same as 3.
Here is the code to load the View:
UIViewController *controller=[[UIViewController alloc] initWithNibName:@"MyView" bundle:nil];
MyView* view=(MyView*)controller.view;
[self.view addSubview:myview];
Hope it helps.
Clarification:
UIViewController
is used to load your xib and the View which the UIViewController
has is actually MyView
which you have assigned in the MyView xib..
Demo I have made a demo grab here
In case you want to set selector to your tint:
ImageViewCompat.setImageTintList(iv, getResources().getColorStateList(R.color.app_icon_click_color));
In the for, you have an iteration, then for each element of that loop which probably is a scalar, has no index. When each element is an empty array, single variable, or scalar and not a list or array you cannot use indices.
For doing FORM posts, the best way is to use WebClient.UploadValues() with a POST method.
This is my answer. Hope it can help somebody.
My focus is to make the searching routine can stop at anywhere, and for a file found, tells the relative depth to the original path.
var _fs = require('fs');
var _path = require('path');
var _defer = process.nextTick;
// next() will pop the first element from an array and return it, together with
// the recursive depth and the container array of the element. i.e. If the first
// element is an array, it'll be dug into recursively. But if the first element is
// an empty array, it'll be simply popped and ignored.
// e.g. If the original array is [1,[2],3], next() will return [1,0,[[2],3]], and
// the array becomes [[2],3]. If the array is [[[],[1,2],3],4], next() will return
// [1,2,[2]], and the array becomes [[[2],3],4].
// There is an infinity loop `while(true) {...}`, because I optimized the code to
// make it a non-recursive version.
var next = function(c) {
var a = c;
var n = 0;
while (true) {
if (a.length == 0) return null;
var x = a[0];
if (x.constructor == Array) {
if (x.length > 0) {
a = x;
++n;
} else {
a.shift();
a = c;
n = 0;
}
} else {
a.shift();
return [x, n, a];
}
}
}
// cb is the callback function, it have four arguments:
// 1) an error object if any exception happens;
// 2) a path name, may be a directory or a file;
// 3) a flag, `true` means directory, and `false` means file;
// 4) a zero-based number indicates the depth relative to the original path.
// cb should return a state value to tell whether the searching routine should
// continue: `true` means it should continue; `false` means it should stop here;
// but for a directory, there is a third state `null`, means it should do not
// dig into the directory and continue searching the next file.
var ls = function(path, cb) {
// use `_path.resolve()` to correctly handle '.' and '..'.
var c = [ _path.resolve(path) ];
var f = function() {
var p = next(c);
p && s(p);
};
var s = function(p) {
_fs.stat(p[0], function(err, ss) {
if (err) {
// use `_defer()` to turn a recursive call into a non-recursive call.
cb(err, p[0], null, p[1]) && _defer(f);
} else if (ss.isDirectory()) {
var y = cb(null, p[0], true, p[1]);
if (y) r(p);
else if (y == null) _defer(f);
} else {
cb(null, p[0], false, p[1]) && _defer(f);
}
});
};
var r = function(p) {
_fs.readdir(p[0], function(err, files) {
if (err) {
cb(err, p[0], true, p[1]) && _defer(f);
} else {
// not use `Array.prototype.map()` because we can make each change on site.
for (var i = 0; i < files.length; i++) {
files[i] = _path.join(p[0], files[i]);
}
p[2].unshift(files);
_defer(f);
}
});
}
_defer(f);
};
var printfile = function(err, file, isdir, n) {
if (err) {
console.log('--> ' + ('[' + n + '] ') + file + ': ' + err);
return true;
} else {
console.log('... ' + ('[' + n + '] ') + (isdir ? 'D' : 'F') + ' ' + file);
return true;
}
};
var path = process.argv[2];
ls(path, printfile);
For Windows:
$ ssh-keygen -t rsa -b 4096 -C [email protected]
I add the changes directly to my virtualhost instead the global config of nginx, like this:
server {
client_max_body_size 100M;
...
}
And then I change the params in php.ini, like the comments above:
max_input_time = 24000
max_execution_time = 24000
upload_max_filesize = 12000M
post_max_size = 24000M
memory_limit = 12000M
and what you can not forget is to restart nginx and php-fpm, in centos 7 is like this:
systemctl restart nginx
systemctl restart php-fpm
If you want to modify the original array instead of returning a new array, use .push()
...
array1.push.apply(array1, array2);
array1.push.apply(array1, array3);
I used .apply
to push the individual members of arrays 2
and 3
at once.
or...
array1.push.apply(array1, array2.concat(array3));
To deal with large arrays, you can do this in batches.
for (var n = 0, to_add = array2.concat(array3); n < to_add.length; n+=300) {
array1.push.apply(array1, to_add.slice(n, n+300));
}
If you do this a lot, create a method or function to handle it.
var push_apply = Function.apply.bind([].push);
var slice_call = Function.call.bind([].slice);
Object.defineProperty(Array.prototype, "pushArrayMembers", {
value: function() {
for (var i = 0; i < arguments.length; i++) {
var to_add = arguments[i];
for (var n = 0; n < to_add.length; n+=300) {
push_apply(this, slice_call(to_add, n, n+300));
}
}
}
});
and use it like this:
array1.pushArrayMembers(array2, array3);
var push_apply = Function.apply.bind([].push);_x000D_
var slice_call = Function.call.bind([].slice);_x000D_
_x000D_
Object.defineProperty(Array.prototype, "pushArrayMembers", {_x000D_
value: function() {_x000D_
for (var i = 0; i < arguments.length; i++) {_x000D_
var to_add = arguments[i];_x000D_
for (var n = 0; n < to_add.length; n+=300) {_x000D_
push_apply(this, slice_call(to_add, n, n+300));_x000D_
}_x000D_
}_x000D_
}_x000D_
});_x000D_
_x000D_
var array1 = ['a','b','c'];_x000D_
var array2 = ['d','e','f'];_x000D_
var array3 = ['g','h','i'];_x000D_
_x000D_
array1.pushArrayMembers(array2, array3);_x000D_
_x000D_
document.body.textContent = JSON.stringify(array1, null, 4);
_x000D_
If the string is empty, comboBox.getSelectedItem().toString()
will give a NullPointerException
. So better to typecast by (String)
.
You can use an argument of type Type - iow, pass typeof(int). You can also use generics for a (probably more efficient) approach.
with 2008 Server 2008 and 2008 R2
Add-PSSnapin -Name SqlServerCmdletSnapin100, SqlServerProviderSnapin100
with 2012 and 2014
Push-Location
Import-Module -Name SQLPS -DisableNameChecking
Pop-Location
Having trouble wrapping my head around this.
Have a rewrite rule with four conditions.
The first three conditions A, B, C are to be AND which is then OR with D
RewriteCond A true
RewriteCond B false
RewriteCond C [OR] true
RewriteCond D true
RewriteRule ...
But that seems to be an expression of A and B and (C or D) = false (don't rewrite)
How can I get to the desired expression? (A and B and C) or D = true (rewrite)
Preferably without using the additional steps of setting environment variables.
HELP!!!
I tried in Chrome Developer tools and the method is valid only if the CSS are included as external files and it won't work for inline styles.
Array.prototype.forEach.call(document.querySelectorAll('link'), (element)=>element.remove());
Or
var linkElements = document.querySelectorAll('link');
Array.prototype.forEach.call(linkElements, (element)=>element.remove());
Explanations
document.querySelectorAll('link')
gets all the link nodes. This will return array of DOM elements. Note that this is not Array object of javascript. Array.prototype.forEach.call(linkElements
loops through the link elements element.remove()
removes the element from the DOMResulting in plain HTML page
Saves time to develop
Makes life easier by providing features like Integrated debugging, intellisense.
There are lot many, but will recommend to use one, they are more than obvious.
x = [i for i in x if len(i)==2]
Use typeof(Book).GetProperties()
to get an array of PropertyInfo
instances. Then use GetCustomAttributes()
on each PropertyInfo
to see if any of them have the Author
Attribute type. If they do, you can get the name of the property from the property info and the attribute values from the attribute.
Something along these lines to scan a type for properties that have a specific attribute type and to return data in a dictionary (note that this can be made more dynamic by passing types into the routine):
public static Dictionary<string, string> GetAuthors()
{
Dictionary<string, string> _dict = new Dictionary<string, string>();
PropertyInfo[] props = typeof(Book).GetProperties();
foreach (PropertyInfo prop in props)
{
object[] attrs = prop.GetCustomAttributes(true);
foreach (object attr in attrs)
{
AuthorAttribute authAttr = attr as AuthorAttribute;
if (authAttr != null)
{
string propName = prop.Name;
string auth = authAttr.Name;
_dict.Add(propName, auth);
}
}
}
return _dict;
}
In motherland Russia we have 4 popular encodings, so your question is in great demand here.
Only by char codes of symbols you can not detect encoding, because code pages intersect. Some codepages in different languages have even full intersection. So, we need another approach.
The only way to work with unknown encodings is working with probabilities. So, we do not want to answer the question "what is encoding of this text?", we are trying to understand "what is most likely encoding of this text?".
One guy here in popular Russian tech blog invented this approach:
Build the probability range of char codes in every encoding you want to support. You can build it using some big texts in your language (e.g. some fiction, use Shakespeare for english and Tolstoy for russian, lol ). You will get smth like this:
encoding_1:
190 => 0.095249209893009,
222 => 0.095249209893009,
...
encoding_2:
239 => 0.095249209893009,
207 => 0.095249209893009,
...
encoding_N:
charcode => probabilty
Next. You take text in unknown encoding and for every encoding in your "probability dictionary" you search for frequency of every symbol in unknown-encoded text. Sum probabilities of symbols. Encoding with bigger rating is likely the winner. Better results for bigger texts.
If you are interested, I can gladly help you with this task. We can greatly increase the accuracy by building two-charcodes probabilty list.
Btw. mb_detect_encoding certanly does not work. Yes, at all. Please, take a look of mb_detect_encoding source code in "ext/mbstring/libmbfl/mbfl/mbfl_ident.c".
This answer maybe late but I just happened to fix the issue. Here is my c_cpp_properties.json file:
{
"configurations": [
{
"name": "Linux",
"includePath": [
"${workspaceFolder}/**",
"/usr/include/c++/5.4.0/",
"usr/local/include/",
"usr/include/"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",
"cStandard": "c11",
"cppStandard": "c++14",
"intelliSenseMode": "clang-x64"
}
],
"version": 4
}
For Fedora use:
yum install libstdc++44.i686
You can find out which versions are supported by running:
yum list all | grep libstdc | grep i686
You forgot to add a position property to the .dummy-wrap
class, and the top/left/bottom/right values don't apply to statically positioned elements (the default)
pg_dump -d <databasename> -h <hostname> -p <port> -n <schemaname> -f <location of the dump file>
Please notice that you have sufficient privilege to access that schema.
If you want take backup as specific user add user name in that command preceded by -U
Just for completeness, you can get a list of kernels with jupyter kernelspec list
, but I ran into a case where one of the kernels did not show up in this list. You can find all kernel names by opening a Jupyter notebook and selecting Kernel -> Change kernel
. If you do not see everything in this list when you run jupyter kernelspec list
, try looking in common Jupyter folders:
ls ~/.local/share/jupyter/kernels # usually where local kernels go
ls /usr/local/share/jupyter/kernels # usually where system-wide kernels go
ls /usr/share/jupyter/kernels # also where system-wide kernels can go
Also, you can delete a kernel with jupyter kernelspec remove
or jupyter kernelspec uninstall
. The latter is an alias for remove
. From the in-line help text for the command:
uninstall
Alias for remove
remove
Remove one or more Jupyter kernelspecs by name.
They are binary large objects, you can use them to store binary data such as images or serialized objects among other things.
You need to grant SELECT permissions to the MySQL user who is connecting to MySQL. See:
http://dev.mysql.com/doc/refman/5.0/en/privilege-system.html
http://dev.mysql.com/doc/refman/5.0/en/user-account-management.html
Just a necrocomment for using string.Join and LINQ.
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
dlgOpenMockImage.Filter = string.Format("{0}| All image files ({1})|{1}|All files|*",
string.Join("|", codecs.Select(codec =>
string.Format("{0} ({1})|{1}", codec.CodecName, codec.FilenameExtension)).ToArray()),
string.Join(";", codecs.Select(codec => codec.FilenameExtension).ToArray()));
Great answer above. Another way is to use the great yaml jq wrapper tool, yq at https://github.com/kislyuk/yq
Save your JSON example to a file, say ex.json and then
yq -y '.' ex.json
AAPL:
- shares: -75.088
date: 11/27/2015
- shares: 75.088
date: 11/26/2015
Associative array in PHP actually considered as a dictionary.
An array in PHP is actually an ordered map. A map is a type that associates values to keys. it can be treated as an array, list (vector), hash table (an implementation of a map), dictionary, collection, stack, queue, and probably more.
<?php
$array = array(
"foo" => "bar",
"bar" => "foo",
);
// Using the short array syntax
$array = [
"foo" => "bar",
"bar" => "foo",
];
?>
An array is different than a dictionary in that arrays have both an index and a key. Dictionaries only have keys and no index.
You can insert an image that looks like a button. Then attach a script to the image.
You can insert any image. The image can be edited in the spreadsheet
Image of a Button
Assign a function name to an image:
reference : https://stackoverflow.com/a/6438240/2624806
Following worked far better.
mObservableScrollView.post(new Runnable() {
public void run() {
mObservableScrollView.fullScroll([View_FOCUS][1]);
}
});
Since I just went though a drag, I'll try to write the answer I'd have wished for two hours ago. This is for people who don't just want the copy&paste solution
First: Do you wonder why copying and pasting paths works for some people while it doesn't work for others?** The main reason, solutions differ are different python versions, 2.x or 3.x. There are actually distinct versions of virtualenv and virtualenvwrapper that work with either python 2 or 3. If you are on python 2 install like so:
sudo pip install virutalenv
sudo pip install virtualenvwrapper
If you are planning to use python 3 install the related python 3 versions
sudo pip3 install virtualenv
sudo pip3 install virtualenvwrapper
You've successfully installed the packages for your python version and are all set, right? Well, try it. Type workon
into your terminal. Your terminal will not be able to find the command (workon
is a command of virtualenvwrapper). Of course it won't. Workon
is an executable that will only be available to you once you load/source the file virtualenvwrapper.sh
. But the official installation guide has you covered on this one, right?. Just open your .bash_profile and insert the following, it says in the documentation:
export WORKON_HOME=$HOME/.virtualenvs
export PROJECT_HOME=$HOME/Devel
source /usr/local/bin/virtualenvwrapper.sh
Especially the command source /usr/local/bin/virtualenvwrapper.sh
seems helpful since the command seems to load/source the desired file virtualenvwrapper.sh
that contains all the commands you want to work with like workon
and mkvirtualenv
. But yeah, no. When following the official installation guide, you are very likely to receive the error from the initial post: mkvirtualenv: command not found
. Still no command is being found and you are still frustrated. So whats the problem here? The problem is that virtualenvwrapper.sh is not were you are looking for it right now. Short reminder ... you are looking here:
source /usr/local/bin/virtualenvwrapper.sh
But there is a pretty straight forward way to finding the desired file. Just type
which virtualenvwrapper
to your terminal. This will search your PATH for the file, since it is very likely to be in some folder that is included in the PATH of your system.
If your system is very exotic, the desired file will hide outside of a PATH folder. In that case you can find the path to virtalenvwrapper.sh
with the shell command find / -name virtualenvwrapper.sh
Your result may look something like this: /Library/Frameworks/Python.framework/Versions/3.7/bin/virtualenvwrapper.sh
Congratulations. You have found your missing file!
. Now all you have to do is changing one command in your .bash_profile. Just change:
source "/usr/local/bin/virtualenvwrapper.sh"
to:
"/Library/Frameworks/Python.framework/Versions/3.7/bin/virtualenvwrapper.sh"
Congratulations. Virtualenvwrapper does now work on your system. But you can do one more thing to enhance your solution. If you've found the file virtualenvwrapper.sh
with the command which virtualenvwrapper.sh
you know that it is inside of a folder of the PATH. So if you just write the filename, your file system will assume the file is inside of a PATH folder. So you you don't have to write out the full path. Just type:
source "virtualenvwrapper.sh"
Thats it. You are no longer frustrated. You have solved your problem. Hopefully.
Why do you not want to iterate exactly ? The new Array.prototype.forEach are great for this purpose!
You can use a Binary Search Tree to find via a single method call if you want. This is a neat implementation of BTree and Red black Search tree in JS - https://github.com/vadimg/js_bintrees - but I'm not sure whether you can find the index at the same time.
def factorial(n):
if n < 2:
return 1
return n * factorial(n - 1)
public static void connect(String url)
{
HttpClient httpclient = new DefaultHttpClient();
// Prepare a request object
HttpGet httpget = new HttpGet(url);
// Execute the request
HttpResponse response;
try {
response = httpclient.execute(httpget);
// Examine the response status
Log.i("Praeda",response.getStatusLine().toString());
// Get hold of the response entity
HttpEntity entity = response.getEntity();
// If the response does not enclose an entity, there is no need
// to worry about connection release
if (entity != null) {
// A Simple JSON Response Read
InputStream instream = entity.getContent();
String result= convertStreamToString(instream);
// now you have the string representation of the HTML request
instream.close();
}
} catch (Exception e) {}
}
private static String convertStreamToString(InputStream is) {
/*
* To convert the InputStream to String we use the BufferedReader.readLine()
* method. We iterate until the BufferedReader return null which means
* there's no more data to read. Each line will appended to a StringBuilder
* and returned as String.
*/
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
log
simply takes the logarithm (base e
, by default) of each element of the vector.
scale
, with default settings, will calculate the mean and standard deviation of the entire vector, then "scale" each element by those values by subtracting the mean and dividing by the sd. (If you use scale(x, scale=FALSE)
, it will only subtract the mean but not divide by the std deviation.)
Note that this will give you the same values
set.seed(1)
x <- runif(7)
# Manually scaling
(x - mean(x)) / sd(x)
scale(x)
As answered by Ian L, I also use NPM to manage my scripts.
Example:
{_x000D_
"scripts": {_x000D_
"ios": "react-native run-ios --simulator=\"iPad Air 2\"",_x000D_
"devices": "xcrun simctl list devices"_x000D_
}_x000D_
}
_x000D_
This way, I can quickly get what I need:
npm run devices
npm run ios
Here is a general solution that may be applied along an axis, regardless of values, using purely numpy. I've also found that this is much faster than scipy.stats.mode if there are a lot of unique values.
import numpy
def mode(ndarray, axis=0):
# Check inputs
ndarray = numpy.asarray(ndarray)
ndim = ndarray.ndim
if ndarray.size == 1:
return (ndarray[0], 1)
elif ndarray.size == 0:
raise Exception('Cannot compute mode on empty array')
try:
axis = range(ndarray.ndim)[axis]
except:
raise Exception('Axis "{}" incompatible with the {}-dimension array'.format(axis, ndim))
# If array is 1-D and numpy version is > 1.9 numpy.unique will suffice
if all([ndim == 1,
int(numpy.__version__.split('.')[0]) >= 1,
int(numpy.__version__.split('.')[1]) >= 9]):
modals, counts = numpy.unique(ndarray, return_counts=True)
index = numpy.argmax(counts)
return modals[index], counts[index]
# Sort array
sort = numpy.sort(ndarray, axis=axis)
# Create array to transpose along the axis and get padding shape
transpose = numpy.roll(numpy.arange(ndim)[::-1], axis)
shape = list(sort.shape)
shape[axis] = 1
# Create a boolean array along strides of unique values
strides = numpy.concatenate([numpy.zeros(shape=shape, dtype='bool'),
numpy.diff(sort, axis=axis) == 0,
numpy.zeros(shape=shape, dtype='bool')],
axis=axis).transpose(transpose).ravel()
# Count the stride lengths
counts = numpy.cumsum(strides)
counts[~strides] = numpy.concatenate([[0], numpy.diff(counts[~strides])])
counts[strides] = 0
# Get shape of padded counts and slice to return to the original shape
shape = numpy.array(sort.shape)
shape[axis] += 1
shape = shape[transpose]
slices = [slice(None)] * ndim
slices[axis] = slice(1, None)
# Reshape and compute final counts
counts = counts.reshape(shape).transpose(transpose)[slices] + 1
# Find maximum counts and return modals/counts
slices = [slice(None, i) for i in sort.shape]
del slices[axis]
index = numpy.ogrid[slices]
index.insert(axis, numpy.argmax(counts, axis=axis))
return sort[index], counts[index]
In python 2.7 you can use NumPy's numpy.std()
gives the population standard deviation.
In Python 3.4 statistics.stdev()
returns the sample standard deviation. The pstdv()
function is the same as numpy.std()
.
Why try to reinvent the wheel? There are more lightweight jQuery slideshow solutions out there then you could poke a stick at, and someone has already done the hard work for you and thought about issues that you might run into (cross-browser compatability etc).
jQuery Cycle is one of my favourite light weight libraries.
What you want to achieve could be done in just
jQuery("#slideshow").cycle({
timeout:0, // no autoplay
fx: 'fade', //fade effect, although there are heaps
next: '#next',
prev: '#prev'
});
The dynamic
keyword was added, together with many other new features of C# 4.0, to make it simpler to talk to code that lives in or comes from other runtimes, that has different APIs.
Take an example.
If you have a COM object, like the Word.Application
object, and want to open a document, the method to do that comes with no less than 15 parameters, most of which are optional.
To call this method, you would need something like this (I'm simplifying, this is not actual code):
object missing = System.Reflection.Missing.Value;
object fileName = "C:\\test.docx";
object readOnly = true;
wordApplication.Documents.Open(ref fileName, ref missing, ref readOnly,
ref missing, ref missing, ref missing, ref missing, ref missing,
ref missing, ref missing, ref missing, ref missing, ref missing,
ref missing, ref missing);
Note all those arguments? You need to pass those since C# before version 4.0 did not have a notion of optional arguments. In C# 4.0, COM APIs have been made easier to work with by introducing:
ref
optional for COM APIsThe new syntax for the above call would be:
wordApplication.Documents.Open(@"C:\Test.docx", ReadOnly: true);
See how much easier it looks, how much more readable it becomes?
Let's break that apart:
named argument, can skip the rest
|
v
wordApplication.Documents.Open(@"C:\Test.docx", ReadOnly: true);
^ ^
| |
notice no ref keyword, can pass
actual parameter values instead
The magic is that the C# compiler will now inject the necessary code, and work with new classes in the runtime, to do almost the exact same thing that you did before, but the syntax has been hidden from you, now you can focus on the what, and not so much on the how. Anders Hejlsberg is fond of saying that you have to invoke different "incantations", which is a sort of pun on the magic of the whole thing, where you typically have to wave your hand(s) and say some magic words in the right order to get a certain type of spell going. The old API way of talking to COM objects was a lot of that, you needed to jump through a lot of hoops in order to coax the compiler to compile the code for you.
Things break down in C# before version 4.0 even more if you try to talk to a COM object that you don't have an interface or class for, all you have is an IDispatch
reference.
If you don't know what it is, IDispatch
is basically reflection for COM objects. With an IDispatch
interface you can ask the object "what is the id number for the method known as Save", and build up arrays of a certain type containing the argument values, and finally call an Invoke
method on the IDispatch
interface to call the method, passing all the information you've managed to scrounge together.
The above Save method could look like this (this is definitely not the right code):
string[] methodNames = new[] { "Open" };
Guid IID = ...
int methodId = wordApplication.GetIDsOfNames(IID, methodNames, methodNames.Length, lcid, dispid);
SafeArray args = new SafeArray(new[] { fileName, missing, missing, .... });
wordApplication.Invoke(methodId, ... args, ...);
All this for just opening a document.
VB had optional arguments and support for most of this out of the box a long time ago, so this C# code:
wordApplication.Documents.Open(@"C:\Test.docx", ReadOnly: true);
is basically just C# catching up to VB in terms of expressiveness, but doing it the right way, by making it extendable, and not just for COM. Of course this is also available for VB.NET or any other language built on top of the .NET runtime.
You can find more information about the IDispatch
interface on Wikipedia: IDispatch if you want to read more about it. It's really gory stuff.
However, what if you wanted to talk to a Python object? There's a different API for that than the one used for COM objects, and since Python objects are dynamic in nature as well, you need to resort to reflection magic to find the right methods to call, their parameters, etc. but not the .NET reflection, something written for Python, pretty much like the IDispatch code above, just altogether different.
And for Ruby? A different API still.
JavaScript? Same deal, different API for that as well.
The dynamic keyword consists of two things:
dynamic
dynamic
keyword requires, and maps the calls to the right way of doing things. The API is even documented, so if you have objects that comes from a runtime not covered, you can add it.The dynamic
keyword is not, however, meant to replace any existing .NET-only code. Sure, you can do it, but it was not added for that reason, and the authors of the C# programming language with Anders Hejlsberg in the front, has been most adamant that they still regard C# as a strongly typed language, and will not sacrifice that principle.
This means that although you can write code like this:
dynamic x = 10;
dynamic y = 3.14;
dynamic z = "test";
dynamic k = true;
dynamic l = x + y * z - k;
and have it compile, it was not meant as a sort of magic-lets-figure-out-what-you-meant-at-runtime type of system.
The whole purpose was to make it easier to talk to other types of objects.
There's plenty of material on the internet about the keyword, proponents, opponents, discussions, rants, praise, etc.
I suggest you start with the following links and then google for more:
Make a custom interface extends the Window and add your custom property as optional.
Then, let the customWindow that use the custom interface, but valued with the original window.
It's worked with the [email protected].
interface ICustomWindow extends Window {
MyNamespace?: any
}
const customWindow:ICustomWindow = window;
customWindow.MyNamespace = customWindow.MyNamespace {}
The MultiCell
is used for print text with multiple lines. It has the same atributes of Cell
except for ln
and link
.
$pdf->MultiCell( 200, 40, $reportSubtitle, 1);
What multiCell does is to spread the given text into multiple cells, this means that the second parameter defines the height of each line (individual cell) and not the height of all cells (collectively).
MultiCell(float w, float h, string txt [, mixed border [, string align [, boolean fill]]])
You can read the full documentation here.
Using truncate()
, the solution could be
import re
#open the xml file for reading:
with open('path/test.xml','r+') as f:
#convert to string:
data = f.read()
f.seek(0)
f.write(re.sub(r"<string>ABC</string>(\s+)<string>(.*)</string>",r"<xyz>ABC</xyz>\1<xyz>\2</xyz>",data))
f.truncate()
jezrael's answer is good, but did not answer a question I had: Will getting the "sort" flag wrong mess up my data in any way? The answer is apparently "no", you are fine either way.
from pandas import DataFrame, concat
a = DataFrame([{'a':1, 'c':2,'d':3 }])
b = DataFrame([{'a':4,'b':5, 'd':6,'e':7}])
>>> concat([a,b],sort=False)
a c d b e
0 1 2.0 3 NaN NaN
0 4 NaN 6 5.0 7.0
>>> concat([a,b],sort=True)
a b c d e
0 1 NaN 2.0 3 NaN
0 4 5.0 NaN 6 7.0
Okay Recently I faced this problem I have very simple solution for solve this Issue , follow these steps:
go to these directories src-> app-> index.html open the index.html and find
<base href="your app name ">
change this to <base href="/">
Your second delegate is not a rewrite of the first in anonymous delegate (rather than lambda) format. Look at your conditions.
First:
x.ID == packageId || x.Parent.ID == packageId || x.Parent.Parent.ID == packageId
Second:
(x.ID == packageId) || (x.Parent != null && x.Parent.ID == packageId) ||
(x.Parent != null && x.Parent.Parent != null && x.Parent.Parent.ID == packageId)
The call to the lambda would throw an exception for any x
where the ID doesn't match and either the parent is null or doesn't match and the grandparent is null. Copy the null checks into the lambda and it should work correctly.
If your original object is not a List<T>
, then we have no way of knowing what the return type of FindAll()
is, and whether or not this implements the IQueryable
interface. If it does, then that likely explains the discrepancy. Because lambdas can be converted at compile time into an Expression<Func<T>>
but anonymous delegates cannot, then you may be using the implementation of IQueryable
when using the lambda version but LINQ-to-Objects when using the anonymous delegate version.
This would also explain why your lambda is not causing a NullReferenceException
. If you were to pass that lambda expression to something that implements IEnumerable<T>
but not IQueryable<T>
, runtime evaluation of the lambda (which is no different from other methods, anonymous or not) would throw a NullReferenceException
the first time it encountered an object where ID
was not equal to the target and the parent or grandparent was null.
Consider the following simple example:
IQueryable<MyObject> source = ...; // some object that implements IQueryable<MyObject>
var anonymousMethod = source.Where(delegate(MyObject o) { return o.Name == "Adam"; });
var expressionLambda = source.Where(o => o.Name == "Adam");
These two methods produce entirely different results.
The first query is the simple version. The anonymous method results in a delegate that's then passed to the IEnumerable<MyObject>.Where
extension method, where the entire contents of source
will be checked (manually in memory using ordinary compiled code) against your delegate. In other words, if you're familiar with iterator blocks in C#, it's something like doing this:
public IEnumerable<MyObject> MyWhere(IEnumerable<MyObject> dataSource, Func<MyObject, bool> predicate)
{
foreach(MyObject item in dataSource)
{
if(predicate(item)) yield return item;
}
}
The salient point here is that you're actually performing your filtering in memory on the client side. For example, if your source were some SQL ORM, there would be no WHERE
clause in the query; the entire result set would be brought back to the client and filtered there.
The second query, which uses a lambda expression, is converted to an Expression<Func<MyObject, bool>>
and uses the IQueryable<MyObject>.Where()
extension method. This results in an object that is also typed as IQueryable<MyObject>
. All of this works by then passing the expression to the underlying provider. This is why you aren't getting a NullReferenceException
. It's entirely up to the query provider how to translate the expression (which, rather than being an actual compiled function that it can just call, is a representation of the logic of the expression using objects) into something it can use.
An easy way to see the distinction (or, at least, that there is) a distinction, would be to put a call to AsEnumerable()
before your call to Where
in the lambda version. This will force your code to use LINQ-to-Objects (meaning it operates on IEnumerable<T>
like the anonymous delegate version, not IQueryable<T>
like the lambda version currently does), and you'll get the exceptions as expected.
The long and the short of it is that your lambda expression is being translated into some kind of query against your data source, whereas the anonymous method version is evaluating the entire data source in memory. Whatever is doing the translating of your lambda into a query is not representing the logic that you're expecting, which is why it isn't producing the results you're expecting.
You can do this:
a = np.array([])
for x in y:
a = np.append(a, x)
Ran into this today and switching to another branch didn't help. It turned out that somehow my worktree information had gotten corrupted and there was a worktree with the same folder path as my working directory with a HEAD
pointing at the branch (git worktree list
). I deleted the .git/worktree/
folder that was referencing it and git branch -d
worked.
Try using this:-
mkdir -p dir;
NOTE:- This will also create any intermediate directories that don't exist; for instance,
Check out mkdir -p
or try this:-
if [[ ! -e $dir ]]; then
mkdir $dir
elif [[ ! -d $dir ]]; then
echo "$Message" 1>&2
fi
Not really answer to the question, but one-liners for foldl and foldr:
a = [8,3,4]
## Foldl
reduce(lambda x,y: x**y, a)
#68719476736
## Foldr
reduce(lambda x,y: y**x, a[::-1])
#14134776518227074636666380005943348126619871175004951664972849610340958208L
span::before,
span::after {
content: '';
display: block;
height: 0;
width: 0;
}
span::before{
margin-top:-6px;
}
span::after{
margin-bottom:-8px;
}
Find out the margin-top and margin-bottom negative margins with this tool: http://text-crop.eightshapes.com/
The tool also gives you SCSS, LESS and Stylus examples. You can read more about it here: https://medium.com/eightshapes-llc/cropping-away-negative-impacts-of-line-height-84d744e016ce
You have a number of options:
One is to not use streams, but use the TextWriter
void Print(TextWriter writer)
{
}
void Main()
{
var textWriter = new StringWriter();
Print(writer);
string myString = textWriter.ToString();
}
It's likely that TextWriter
is the appropriate level of abstraction for your print
function.
Streams are aimed at writing binary data, while TextWriter works at a higher abstraction level, specifically geared towards outputting strings.
If your motivation is that you also want your Print
function to write to files, you can get a text writer from a filestream as well.
void Print(TextWriter writer)
{
}
void PrintToFile(string filePath)
{
using(var textWriter = new StreamWriter(filePath))
{
Print(writer);
}
}
If you REALLY want a stream you can look at MemoryStream
.
To make it easier I will say you can change your buttons to the following:
<input name="btnSubmit" type="submit" value="Save" />
<input name="btnProcess" type="submit" value="Process" />
Your controller:
public ActionResult Create(string btnSubmit, string btnProcess)
{
if(btnSubmit != null)
// do something for the Button btnSubmit
else
// do something for the Button btnProcess
}
The array constructor has an ambiguous syntax, and JSLint just hurts your feelings after all.
Also, your example code is broken, the second var
statement will raise a SyntaxError
. You're setting the property length
of the array test
, so there's no need for another var
.
As far as your options go, array.length
is the only "clean" one. Question is, why do you need to set the size in the first place? Try to refactor your code to get rid of that dependency.
Just to make this absolutely clear for all:
A .MDF file is “typically” a SQL Server data file however it is important to note that it does NOT have to be.
This is because .MDF is nothing more than a recommended/preferred notation but the extension itself does not actually dictate the file type.
To illustrate this, if someone wanted to create their primary data file with an extension of .gbn they could go ahead and do so without issue.
To qualify the preferred naming conventions:
Yes, return
stops execution and exits the function. return
always** exits its function immediately, with no further execution if it's inside a for loop.
It is easily verified for yourself:
function returnMe() {
for (var i = 0; i < 2; i++) {
if (i === 1) return i;
}
}
console.log(returnMe());
_x000D_
** Notes: See this other answer about the special case of try/catch/finally
and this answer about how forEach loops has its own function scope will not break out of the containing function.
Integers:
int value = 100000;
String.format("%,d", value); // outputs 100,000
Doubles:
double value = 21403.3144d;
String.format("%,.2f", value); // outputs 21,403.31
String.format is pretty powerful.
- Edited per psuzzi feedback.
hi If you are still not able to make column as AUTO_INCREMENT while creating table. As a work around first create table that is:
create table student( sid integer NOT NULL sname varchar(30), PRIMARY KEY (sid) );
and then explicitly try to alter column bu using the following
alter table student alter column sid set GENERATED BY DEFAULT AS IDENTITY
Or
alter table student alter column sid set GENERATED BY DEFAULT AS IDENTITY (start with 100)
Check below example
<script src='https://www.google.com/recaptcha/api.js'></script>
<script>
function get_action(form)
{
var v = grecaptcha.getResponse();
if(v.length == 0)
{
document.getElementById('captcha').innerHTML="You can't leave Captcha Code empty";
return false;
}
else
{
document.getElementById('captcha').innerHTML="Captcha completed";
return true;
}
}
</script>
<form autocomplete="off" method="post" action=submit.php">
<input type="text" name="name">
<input type="text" name="email">
<div class="g-recaptcha" id="rcaptcha" data-sitekey="site key"></div>
<span id="captcha" style="color:red" /></span> <!-- this will show captcha errors -->
<input type="submit" id="sbtBrn" value="Submit" name="sbt" class="btn btn-info contactBtn" />
</form>
You may have to do something like "rvm use 1.9.2" first so that you are using the correct ruby and gemset. You can check which ruby you are using by doing "which ruby"
You can sort the Dictionary by value and get the result in dictionary using the code below:
Dictionary <<string, string>> ShareUserNewCopy =
ShareUserCopy.OrderBy(x => x.Value).ToDictionary(pair => pair.Key,
pair => pair.Value);
Usually, when you create a Java project you want to use functionalities made in another Java projects. For example, if your project wants to send one email you dont need to create all the necessary code for doing that. You can bring a java library that does the most part of the work. Maven is a building tool that will help you in several tasks. One of those tasks is to bring these external dependencies or artifacts to your project in an automatic way ( only with some configuration in a XML file ). Of course Maven has more details but, for your question this is enough. And, of course too, Maven can build your project as an artifact (usually a jar file ) that can be used or imported in other projects.
This website has several articles talking about Maven :
Adding to jelovirt's answer, you can use number() to convert the value to a number, then round(), floor(), or ceiling() to get a whole integer.
Example
<xsl:variable name="MyValAsText" select="'5.14'"/>
<xsl:value-of select="number($MyValAsText) * 2"/> <!-- This outputs 10.28 -->
<xsl:value-of select="floor($MyValAsText)"/> <!-- outputs 5 -->
<xsl:value-of select="ceiling($MyValAsText)"/> <!-- outputs 6 -->
<xsl:value-of select="round($MyValAsText)"/> <!-- outputs 5 -->
There is no directive for ng-else
You can use ng-if to achieve if(){..} else{..} in angularJs.
For your current situation,
<div ng-if="data.id == 5">
<!-- If block -->
</div>
<div ng-if="data.id != 5">
<!-- Your Else Block -->
</div>
I wanted a solution that did not create any extra objects (ie listeners) that would have to be garbage collected later, and did not require nesting a view holder inside an adapter class.
In the ViewHolder
class
private static class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private final TextView ....// declare the fields in your view
private ClickHandler ClickHandler;
public MyHolder(final View itemView) {
super(itemView);
nameField = (TextView) itemView.findViewById(R.id.name);
//find other fields here...
Button myButton = (Button) itemView.findViewById(R.id.my_button);
myButton.setOnClickListener(this);
}
...
@Override
public void onClick(final View view) {
if (clickHandler != null) {
clickHandler.onMyButtonClicked(getAdapterPosition());
}
}
Points to note: the ClickHandler
interface is defined, but not initialized here, so there is no assumption in the onClick
method that it was ever initialized.
The ClickHandler
interface looks like this:
private interface ClickHandler {
void onMyButtonClicked(final int position);
}
In the adapter, set an instance of 'ClickHandler' in the constructor, and override onBindViewHolder
, to initialize `clickHandler' on the view holder:
private class MyAdapter extends ...{
private final ClickHandler clickHandler;
public MyAdapter(final ClickHandler clickHandler) {
super(...);
this.clickHandler = clickHandler;
}
@Override
public void onBindViewHolder(final MyViewHolder viewHolder, final int position) {
super.onBindViewHolder(viewHolder, position);
viewHolder.clickHandler = this.clickHandler;
}
Note: I know that viewHolder.clickHandler is potentially getting set multiple times with the exact same value, but this is cheaper than checking for null and branching, and there is no memory cost, just an extra instruction.
Finally, when you create the adapter, you are forced to pass a ClickHandler
instance to the constructor, as so:
adapter = new MyAdapter(new ClickHandler() {
@Override
public void onMyButtonClicked(final int position) {
final MyModel model = adapter.getItem(position);
//do something with the model where the button was clicked
}
});
Note that adapter
is a member variable here, not a local variable
What is the best practice on where the logic for the @foreach should be at?
Nowhere, just get rid of it. You could use editor or display templates.
So for example:
@foreach (var item in Model.Foos)
{
<div>@item.Bar</div>
}
could perfectly fine be replaced by a display template:
@Html.DisplayFor(x => x.Foos)
and then you will define the corresponding display template (if you don't like the default one). So you would define a reusable template ~/Views/Shared/DisplayTemplates/Foo.cshtml
which will automatically be rendered by the framework for each element of the Foos collection (IEnumerable<Foo> Foos { get; set; }
):
@model Foo
<div>@Model.Bar</div>
Obviously exactly the same conventions apply for editor templates which should be used in case you want to show some input fields allowing you to edit the view model in contrast to just displaying it as readonly.
This one
if [[ ! $(cat /etc/passwd | grep "sysa") ]]
Then echo " something"
exit 2
fi
django.setup() does not seem to work.
does not seem to be required either.
this alone worked.
import os, django, glob, sys, shelve
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myProject.settings")
position: absolute;
color: #ffffff;
font-weight: 500;
top: 0%;
left: 0%;
right: 0%;
text-align: center;
This is a more statble code for all Android versions and possibly for new ones
void checkGPS() {
LocationRequest locationRequest = LocationRequest.create();
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().addLocationRequest(locationRequest);
SettingsClient settingsClient = LocationServices.getSettingsClient(this);
Task<LocationSettingsResponse> task = settingsClient.checkLocationSettings(builder.build());
task.addOnSuccessListener(this, new OnSuccessListener<LocationSettingsResponse>() {
@Override
public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
Log.d("GPS_main", "OnSuccess");
// GPS is ON
}
});
task.addOnFailureListener(this, new OnFailureListener() {
@Override
public void onFailure(@NonNull final Exception e) {
Log.d("GPS_main", "GPS off");
// GPS off
if (e instanceof ResolvableApiException) {
ResolvableApiException resolvable = (ResolvableApiException) e;
try {
resolvable.startResolutionForResult(ActivityMain.this, REQUESTCODE_TURNON_GPS);
} catch (IntentSender.SendIntentException e1) {
e1.printStackTrace();
}
}
}
});
}
And you can handle the GPS state changes here
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode == Static_AppVariables.REQUESTCODE_TURNON_GPS) {
switch (resultCode) {
case Activity.RESULT_OK:
// GPS was turned on;
break;
case Activity.RESULT_CANCELED:
// User rejected turning on the GPS
break;
default:
break;
}
}
}
Based on Cameron's initial answer, here is what I've just added at my enhanced version of SilverFlow library's FloatingWindowHost (copying from FloatingWindowHost.cs at http://clipflair.codeplex.com source code)
public int MaxZIndex
{
get {
return FloatingWindows.Aggregate(-1, (maxZIndex, window) => {
int w = Canvas.GetZIndex(window);
return (w > maxZIndex) ? w : maxZIndex;
});
}
}
private void SetTopmost(UIElement element)
{
if (element == null)
throw new ArgumentNullException("element");
Canvas.SetZIndex(element, MaxZIndex + 1);
}
Worth noting regarding the code above that Canvas.ZIndex is an attached property available for UIElements in various containers, not just used when being hosted in a Canvas (see Controlling rendering order (ZOrder) in Silverlight without using the Canvas control). Guess one could even make a SetTopmost and SetBottomMost static extension method for UIElement easily by adapting this code.
InnoDB has transaction support, you're not using explicit transactions so innoDB has to do a commit after each statement ("performs a log flush to disk for every insert").
Execute this command before your loop:
START TRANSACTION
and this after you loop
COMMIT
you can add infinite borders using box-shadow using css3 suppose you want to apply multiple borders on one div then code is like:
div {
border-radius: 4px;
/* #1 */
border: 5px solid hsl(0, 0%, 40%);
/* #2 */
padding: 5px;
background: hsl(0, 0%, 20%);
/* #3 */
outline: 5px solid hsl(0, 0%, 60%);
/* #4 AND INFINITY!!! (CSS3 only) */
box-shadow:
0 0 0 10px red,
0 0 0 15px orange,
0 0 0 20px yellow,
0 0 0 25px green,
0 0 0 30px blue;
}
Yes you can do it yourself. It is just a matter of grabbing the sources of the page and parsing them the way you want.
There are various possibilities. A good combo is using python-requests (built on top of urllib2, it is urllib.request
in Python3) and BeautifulSoup4, which has its methods to select elements and also permits CSS selectors:
import requests
from BeautifulSoup4 import BeautifulSoup as bs
request = requests.get("http://foo.bar")
soup = bs(request.text)
some_elements = soup.find_all("div", class_="myCssClass")
Some will prefer xpath parsing or jquery-like pyquery, lxml or something else.
When the data you want is produced by some JavaScript, the above won't work. You either need python-ghost or Selenium. I prefer the latter combined with PhantomJS, much lighter and simpler to install, and easy to use:
from selenium import webdriver
client = webdriver.PhantomJS()
client.get("http://foo")
soup = bs(client.page_source)
I would advice to start your own solution. You'll understand Scrapy's benefits doing so.
ps: take a look at scrapely: https://github.com/scrapy/scrapely
pps: take a look at Portia, to start extracting information visually, without programming knowledge: https://github.com/scrapinghub/portia
If you override the equality of People then you can also use:
peopleList2.Except(peopleList1)
Except
should be significantly faster than the Where(...Any)
variant since it can put the second list into a hashtable. Where(...Any)
has a runtime of O(peopleList1.Count * peopleList2.Count)
whereas variants based on HashSet<T>
(almost) have a runtime of O(peopleList1.Count + peopleList2.Count)
.
Except
implicitly removes duplicates. That shouldn't affect your case, but might be an issue for similar cases.
Or if you want fast code but don't want to override the equality:
var excludedIDs = new HashSet<int>(peopleList1.Select(p => p.ID));
var result = peopleList2.Where(p => !excludedIDs.Contains(p.ID));
This variant does not remove duplicates.
some sources prefere to use .env.development
and .env.production
but that's not obligatory.
it seems that if your environment variable does not start like that so you will have problems
to include your environment variable just put on your code process.env.REACT_APP_VARIABLE
You don't have to install any external dependency
def is_prime(x):
if x < 2:
return False
else:
if x == 2:
return True
else:
for i in range(2, x):
if x % i == 0:
return False
return True
x = int(raw_input("enter a prime number"))
print is_prime(x)
Here's a very good explanation taken verbatim from http://www.paulboxley.com/blog/2011/06/git-caret-and-tilde :
ref~
is shorthand forref~1
and means the commit's first parent.ref~2
means the commit's first parent's first parent.ref~3
means the commit's first parent's first parent's first parent. And so on.
ref^
is shorthand forref^1
and means the commit's first parent. But where the two differ is thatref^2
means the commit's second parent (remember, commits can have two parents when they are a merge).The
^
and~
operators can be combined.
I've been frustrated for long by Windows code page issues, and the C programs portability and localisation issues they cause. The previous posts have detailed the issues at length, so I'm not going to add anything in this respect.
To make a long story short, eventually I ended up writing my own UTF-8 compatibility library layer over the Visual C++ standard C library. Basically this library ensures that a standard C program works right, in any code page, using UTF-8 internally.
This library, called MsvcLibX, is available as open source at https://github.com/JFLarvoire/SysToolsLib. Main features:
More details in the MsvcLibX README on GitHub, including how to build the library and use it in your own programs.
The release section in the above GitHub repository provides several programs using this MsvcLibX library, that will show its capabilities. Ex: Try my which.exe tool with directories with non-ASCII names in the PATH, searching for programs with non-ASCII names, and changing code pages.
Another useful tool there is the conv.exe program. This program can easily convert a data stream from any code page to any other. Its default is input in the Windows code page, and output in the current console code page. This allows to correctly view data generated by Windows GUI apps (ex: Notepad) in a command console, with a simple command like: type WINFILE.txt | conv
This MsvcLibX library is by no means complete, and contributions for improving it are welcome!
This is similar to one of the answers but in different way :
scala> val x = List(1,2,3)
x: List[Int] = List(1, 2, 3)
scala> val y = x ::: 4 :: Nil
y: List[Int] = List(1, 2, 3, 4)
You can use the function RESHAPE:
B = reshape(A.',1,[]);
Besides all above solutions, check if you have the "id
" or any custom defined parameter in the DELETE
method is matching the route config.
public void Delete(int id)
{
//some code here
}
If you hit with repeated 405 errors better reset the method signature to default as above and try.
The route config by default will look for id
in the URL. So the parameter name id
is important here unless you change the route config under the App_Start
folder.
You may change the data type of the id
though.
For example the method below should work just fine:
public void Delete(string id)
{
//some code here
}
Note: Also ensure that you pass the data over the url not the data method that will carry the payload as body content.
DELETE http://{url}/{action}/{id}
Example:
DELETE http://localhost/item/1
Hope it helps.
The unix setup should be like the following:
0 */3 * * * sh cron/update_old_citations.sh
good reference for how to set various settings in cron at: http://www.thegeekstuff.com/2011/07/cron-every-5-minutes/
<script type="text/javascript">
jQuery(function () {
var container = jQuery("\#content");
jQuery(container)
.kendoGrid({
selectable: "single row",
dataSource: new kendo.data.DataSource({
transport: {
read: {
url: "@Url.Action("GetMsgDetails", "OutMessage")" + "?msgId=" + msgId,
dataType: "json",
},
},
batch: true,
}),
editable: "popup",
columns: [
{ field: "Id", title: "Id", width: 250, hidden: true },
{ field: "Data", title: "Message Body", width: 100 },
{ field: "mobile", title: "Mobile Number", width: 100 },
]
});
});
If you're editing files in a common directory, you can :cd
to that directory, then use :e
on just the filename.
For example, rather than:
:e /big/long/path/that/takes/a/while/to/type/or/tab/complete/thingy.rb
:sp /big/long/path/that/takes/a/while/to/type/or/tab/complete/other_thingy.c
:vs /big/long/path/that/takes/a/while/to/type/or/tab/complete/one_more_thingy.java
You can do:
:cd /big/long/path/that/takes/a/while/to/type/or/tab/complete/
:e thingy.rb
:sp other_thingy.c
:vs one_more_thingy.java
Or, if you already have a file in the desired directory open, you can use the %
shorthand for the current filename, and trim it to the current directory with the :h
modifier (:help :_%:
) :
:e /big/long/path/that/takes/a/while/to/type/or/tab/complete/thingy.rb
:cd %:h
:sp other_thingy.c
:vs one_more_thingy.java
And, like others have said, you can tab-complete file names on the ex-line (see :help cmdline-completion
for more).
I found a useful generic template that can help implement the correct disposal pattern for COM objects, that need Marshal.ReleaseComObject called when they go out of scope:
Usage:
using (AutoReleaseComObject<Application> excelApplicationWrapper = new AutoReleaseComObject<Application>(new Application()))
{
try
{
using (AutoReleaseComObject<Workbook> workbookWrapper = new AutoReleaseComObject<Workbook>(excelApplicationWrapper.ComObject.Workbooks.Open(namedRangeBase.FullName, false, false, missing, missing, missing, true, missing, missing, true, missing, missing, missing, missing, missing)))
{
// do something with your workbook....
}
}
finally
{
excelApplicationWrapper.ComObject.Quit();
}
}
Template:
public class AutoReleaseComObject<T> : IDisposable
{
private T m_comObject;
private bool m_armed = true;
private bool m_disposed = false;
public AutoReleaseComObject(T comObject)
{
Debug.Assert(comObject != null);
m_comObject = comObject;
}
#if DEBUG
~AutoReleaseComObject()
{
// We should have been disposed using Dispose().
Debug.WriteLine("Finalize being called, should have been disposed");
if (this.ComObject != null)
{
Debug.WriteLine(string.Format("ComObject was not null:{0}, name:{1}.", this.ComObject, this.ComObjectName));
}
//Debug.Assert(false);
}
#endif
public T ComObject
{
get
{
Debug.Assert(!m_disposed);
return m_comObject;
}
}
private string ComObjectName
{
get
{
if(this.ComObject is Microsoft.Office.Interop.Excel.Workbook)
{
return ((Microsoft.Office.Interop.Excel.Workbook)this.ComObject).Name;
}
return null;
}
}
public void Disarm()
{
Debug.Assert(!m_disposed);
m_armed = false;
}
#region IDisposable Members
public void Dispose()
{
Dispose(true);
#if DEBUG
GC.SuppressFinalize(this);
#endif
}
#endregion
protected virtual void Dispose(bool disposing)
{
if (!m_disposed)
{
if (m_armed)
{
int refcnt = 0;
do
{
refcnt = System.Runtime.InteropServices.Marshal.ReleaseComObject(m_comObject);
} while (refcnt > 0);
m_comObject = default(T);
}
m_disposed = true;
}
}
}
Reference:
http://www.deez.info/sengelha/2005/02/11/useful-idisposable-class-3-autoreleasecomobject/
This works for me. It will get you both dist-packages and site-packages folders. If the folder is not on Python's path, it won't be doing you much good anyway.
import sys;
print [f for f in sys.path if f.endswith('packages')]
Output (Ubuntu installation):
['/home/username/.local/lib/python2.7/site-packages',
'/usr/local/lib/python2.7/dist-packages',
'/usr/lib/python2.7/dist-packages']
Looks like the logs are scattered? I found access logs under
<ProjectLocation>\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\logs
For the case XCode version is lower than iOS device's image, you can either copy the disk image from other already updated XCode(or maybe the internet) or upgrade your XCode.
The image is a folder with size about over 10MB, and place(find or put it) here under this path "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSup??port/".
To enter Xcode.app package, hold control key and click on Xcode.app, you will find additional option like show package content or some word similar. Choose this option and you will enter Xcode.app like entering a normal folder.
Hope it's helpful and good luck!
This works for me even in IE9:
$('<img src="' + imgURL + '"/>').on('load', function(){ doOnLoadStuff(); });
Combine Powershell
into a batch file and use the meta variables to assign each:
@echo off
for /f "tokens=1-6 delims=-" %%a in ('PowerShell -Command "& {Get-Date -format "yyyy-MM-dd-HH-mm-ss"}"') do (
echo year: %%a
echo month: %%b
echo day: %%c
echo hour: %%d
echo minute: %%e
echo second: %%f
)
You can also change the the format if you prefer name of the month MMM
or MMMM
and 12 hour to 24 hour formats hh
or HH
The following will be able to process very large files quickly.
$file = New-Object System.IO.StreamReader -Arg "file1.txt"
$outstream = [System.IO.StreamWriter] "file2.txt"
$count = 0
while ($line = $file.ReadLine()) {
$count += 1
$s = $line -replace "`n", "`r`n"
$outstream.WriteLine($s)
}
$file.close()
$outstream.close()
Write-Host ([string] $count + ' lines have been processed.')
Also, if you are using LINQ, you can apparently do something like myList.Select(methodGroup)
.
So, for example, I have:
private string DoSomethingToMyString(string input)
{
// blah
}
Instead of explicitly stating the variable to be used like this:
public List<string> GetStringStuff()
{
return something.getStringsFromSomewhere.Select(str => DoSomethingToMyString(str));
}
I can just omit the name of the var:
public List<string> GetStringStuff()
{
return something.getStringsFromSomewhere.Select(DoSomethingToMyString);
}
Just open your sql file with a text editor and search for 'utf8mb4' and replace with utf8.I hope it would work for you
I think I found the answer in my kernel source documentation: /usr/src/linux-2.6.37-rc3/Documentation/filesystems/proc.txt
1.7 TTY info in /proc/tty
-------------------------
Information about the available and actually used tty's can be found in the
directory /proc/tty.You'll find entries for drivers and line disciplines in
this directory, as shown in Table 1-11.
Table 1-11: Files in /proc/tty
..............................................................................
File Content
drivers list of drivers and their usage
ldiscs registered line disciplines
driver/serial usage statistic and status of single tty lines
..............................................................................
To see which tty's are currently in use, you can simply look into the file
/proc/tty/drivers:
> cat /proc/tty/drivers
pty_slave /dev/pts 136 0-255 pty:slave
pty_master /dev/ptm 128 0-255 pty:master
pty_slave /dev/ttyp 3 0-255 pty:slave
pty_master /dev/pty 2 0-255 pty:master
serial /dev/cua 5 64-67 serial:callout
serial /dev/ttyS 4 64-67 serial
/dev/tty0 /dev/tty0 4 0 system:vtmaster
/dev/ptmx /dev/ptmx 5 2 system
/dev/console /dev/console 5 1 system:console
/dev/tty /dev/tty 5 0 system:/dev/tty
unknown /dev/tty 4 1-63 console
Here is a link to this file: http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=blob_plain;f=Documentation/filesystems/proc.txt;hb=e8883f8057c0f7c9950fa9f20568f37bfa62f34a
The easiest way to do this on Vista, Win 7 and above is enumerating token groups and looking for the current integrity level (or the administrators sid, if only group memberhip is important):
Check if we are running elevated:
whoami /groups | find "S-1-16-12288" && Echo I am running elevated, so I must be an admin anyway ;-)
Check if we belong to local administrators:
whoami /groups | find "S-1-5-32-544" && Echo I am a local admin
Check if we belong to domain admins:
whoami /groups | find "-512 " && Echo I am a domain admin
The following article lists the integrity level SIDs windows uses: http://msdn.microsoft.com/en-us/library/bb625963.aspx
This is works for me. tyr this
exec(“php asyn.php”.” > /dev/null 2>/dev/null &“);
Try using
DateTime.ParseExact(
txtPaymentSummaryBeginDate.Text.Trim(),
"MM/dd/yyyy",
System.Globalization.CultureInfo.InvariantCulture
);
It throws an exception if the input string is not in proper format, so in the catch
section you can return false;
Here is an idea you can try. Original table - no identity column table1 create a new table - call table2 along with identity column. copy the data from table1 to table2 - the identity column is populated automatically with auto incremented numbers.
rename the original table - table1 to table3 rename the new table - table2 to table1 (original table) Now you have the table1 with identity column included and populated for the existing data. after making sure there is no issue and working properly, drop the table3 when no longer needed.
add delim_whitespace=True
argument, it's faster than regex.
I solved this problem by changing await _accountSessionDataModel.SaveChangesAsync(); to _accountSessionDataModel.SaveChanges(); in my Repository class.
public async Task<Session> CreateSession()
{
var session = new Session();
_accountSessionDataModel.Sessions.Add(session);
await _accountSessionDataModel.SaveChangesAsync();
}
Changed it to:
public Session CreateSession()
{
var session = new Session();
_accountSessionDataModel.Sessions.Add(session);
_accountSessionDataModel.SaveChanges();
}
The problem was that I updated the Sessions in the frontend after creating a session (in code), but because SaveChangesAsync happens asynchronously, fetching the sessions caused this error because apparently the SaveChangesAsync operation was not yet ready.
Just to add to the existing answers, I don't see anyone mentioning that python requests is not a native library. If you are ok with adding dependencies, then requests is fine. However, if you are trying to avoid adding dependencies, urllib is a native python library that is already available to you.
Note that on Python 3, it's not really fair to say any of:
str
s are UTFx for any x (eg. UTF8)
str
s are Unicode
str
s are ordered collections of Unicode characters
Python's str
type is (normally) a sequence of Unicode code points, some of which map to characters.
Even on Python 3, it's not as simple to answer this question as you might imagine.
An obvious way to test for ASCII-compatible strings is by an attempted encode:
"Hello there!".encode("ascii")
#>>> b'Hello there!'
"Hello there... ?!".encode("ascii")
#>>> Traceback (most recent call last):
#>>> File "", line 4, in <module>
#>>> UnicodeEncodeError: 'ascii' codec can't encode character '\u2603' in position 15: ordinal not in range(128)
The error distinguishes the cases.
In Python 3, there are even some strings that contain invalid Unicode code points:
"Hello there!".encode("utf8")
#>>> b'Hello there!'
"\udcc3".encode("utf8")
#>>> Traceback (most recent call last):
#>>> File "", line 19, in <module>
#>>> UnicodeEncodeError: 'utf-8' codec can't encode character '\udcc3' in position 0: surrogates not allowed
The same method to distinguish them is used.
I think this is what you're looking for. NEW_BAL
is the sum of QTY
s subtracted from the balance:
SELECT master_table.ORDERNO,
master_table.ITEM,
SUM(master_table.QTY),
stock_bal.BAL_QTY,
(stock_bal.BAL_QTY - SUM(master_table.QTY)) AS NEW_BAL
FROM master_table INNER JOIN
stock_bal ON master_bal.ITEM = stock_bal.ITEM
GROUP BY master_table.ORDERNO,
master_table.ITEM
If you want to update the item balance with the new balance, use the following:
UPDATE stock_bal
SET BAL_QTY = BAL_QTY - (SELECT SUM(QTY)
FROM master_table
GROUP BY master_table.ORDERNO,
master_table.ITEM)
This assumes you posted the subtraction backward; it subtracts the quantities in the order from the balance, which makes the most sense without knowing more about your tables. Just swap those two to change it if I was wrong:
(SUM(master_table.QTY) - stock_bal.BAL_QTY) AS NEW_BAL
Attach an event listener to the form using .addEventListener()
and then call the .preventDefault()
method on event
:
const element = document.querySelector('form');_x000D_
element.addEventListener('submit', event => {_x000D_
event.preventDefault();_x000D_
// actual logic, e.g. validate the form_x000D_
console.log('Form submission cancelled.');_x000D_
});
_x000D_
<form>_x000D_
<button type="submit">Submit</button>_x000D_
</form>
_x000D_
I think it's a better solution than defining a submit
event handler inline with the onsubmit
attribute because it separates webpage logic and structure. It's much easier to maintain a project where logic is separated from HTML. See: Unobtrusive JavaScript.
Using the .onsubmit
property of the form
DOM object is not a good idea because it prevents you from attaching multiple submit callbacks to one element. See addEventListener vs onclick
.
Here is another solution, that has all the source available in a single, simple ZIP file.
It presents the OpenFileDialog with additional windows flags that makes it work like the Windows 7+ Folder Selection dialog.
Per the website, it is public domain: "There’s no license as such as you are free to take and do with the code what you will."
Archive.org links:
import tensorflow as tf
print(tf.VERSION)
It could be a good idea to be careful with the Locale upon which c.getTime().toString();
depends.
One idea is to store the time in seconds (e.g. UNIX time). As an int
you can easily compare it, and then you just convert it to string when displaying it to the user.
include() needs a full file path, relative to the file system's root directory.
This should work:
include_once("C:/xampp/htdocs/PoliticalForum/headerSite.php");
select * into newtable from oldtable
Take a look at the Java guide on varargs.
You can create a method as shown below. Simply call System.out.printf
instead of System.out.println(String.format(...
.
public static void print(String format, Object... args) {
System.out.printf(format, args);
}
Alternatively, you can just use a static import if you want to type as little as possible. Then you don't have to create your own method:
import static java.lang.System.out;
out.printf("Numer of apples: %d", 10);
Sure.
.orElseThrow(() -> new MyException(someArgument))
This topic is well covered already but I wanted to add something more specific : I wanted to be sure that a certain value would be mapped to that color (not to any color).
It is not complicated but as it took me some time, it might help others not lossing as much time as I did :)
import matplotlib
from matplotlib.colors import ListedColormap
# Let's design a dummy land use field
A = np.reshape([7,2,13,7,2,2], (2,3))
vals = np.unique(A)
# Let's also design our color mapping: 1s should be plotted in blue, 2s in red, etc...
col_dict={1:"blue",
2:"red",
13:"orange",
7:"green"}
# We create a colormar from our list of colors
cm = ListedColormap([col_dict[x] for x in col_dict.keys()])
# Let's also define the description of each category : 1 (blue) is Sea; 2 (red) is burnt, etc... Order should be respected here ! Or using another dict maybe could help.
labels = np.array(["Sea","City","Sand","Forest"])
len_lab = len(labels)
# prepare normalizer
## Prepare bins for the normalizer
norm_bins = np.sort([*col_dict.keys()]) + 0.5
norm_bins = np.insert(norm_bins, 0, np.min(norm_bins) - 1.0)
print(norm_bins)
## Make normalizer and formatter
norm = matplotlib.colors.BoundaryNorm(norm_bins, len_lab, clip=True)
fmt = matplotlib.ticker.FuncFormatter(lambda x, pos: labels[norm(x)])
# Plot our figure
fig,ax = plt.subplots()
im = ax.imshow(A, cmap=cm, norm=norm)
diff = norm_bins[1:] - norm_bins[:-1]
tickz = norm_bins[:-1] + diff / 2
cb = fig.colorbar(im, format=fmt, ticks=tickz)
fig.savefig("example_landuse.png")
plt.show()
Use this style sheet to get you started !
.tooltip{
position:absolute;
z-index:1020;
display:block;
visibility:visible;
padding:5px;
font-size:11px;
opacity:0;
filter:alpha(opacity=0)
}
.tooltip.in{
opacity:.8;
filter:alpha(opacity=80)
}
.tooltip.top{
margin-top:-2px
}
.tooltip.right{
margin-left:2px
}
.tooltip.bottom{
margin-top:2px
}
.tooltip.left{
margin-left:-2px
}
.tooltip.top .tooltip-arrow{
bottom:0;
left:50%;
margin-left:-5px;
border-left:5px solid transparent;
border-right:5px solid transparent;
border-top:5px solid #000
}
.tooltip.left .tooltip-arrow{
top:50%;
right:0;
margin-top:-5px;
border-top:5px solid transparent;
border-bottom:5px solid transparent;
border-left:5px solid #000
}
.tooltip.bottom .tooltip-arrow{
top:0;
left:50%;
margin-left:-5px;
border-left:5px solid transparent;
border-right:5px solid transparent;
border-bottom:5px solid #000
}
.tooltip.right .tooltip-arrow{
top:50%;
left:0;
margin-top:-5px;
border-top:5px solid transparent;
border-bottom:5px solid transparent;
border-right:5px solid #000
}
.tooltip-inner{
max-width:200px;
padding:3px 8px;
color:#fff;
text-align:center;
text-decoration:none;
background-color:#000;
-webkit-border-radius:4px;
-moz-border-radius:4px;
border-radius:4px
}
.tooltip-arrow{
position:absolute;
width:0;
height:0
}
To do a BEFORE UPDATE
in SQL Server I use a trick. I do a false update of the record (UPDATE Table SET Field = Field
), in such way I get the previous image of the record.
You can just use either of the following approaches:
.center-block {
margin: auto;
display: block;
}
_x000D_
<div>
<input class="center-block">
</div>
_x000D_
.parent {
display: grid;
place-items: center;
}
_x000D_
<div class="parent">
<input>
</div>
_x000D_
StringUtils is part of Apache Commons Lang (http://commons.apache.org/lang/, and as the name suggest it provides some nice utilities for dealing with Strings, going beyond what is offered in java.lang.String. It consists of over 50 static methods.
There are two different versions available, the newer org.apache.commons.lang3.StringUtils and the older org.apache.commons.lang.StringUtils. There are not really any significant differences between the two. lang3.StringUtils requires Java 5.0 and is probably the version you'll want to use.
This is the only thing that I found to work
-(void) testHTTPS {
AFSecurityPolicy *securityPolicy = [[AFSecurityPolicy alloc] init];
[securityPolicy setAllowInvalidCertificates:YES];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager setSecurityPolicy:securityPolicy];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager GET:[NSString stringWithFormat:@"%@", HOST] parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
NSLog(@"%@", string);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];
}
Why don't you just make it easy and simple. If I need to know the number of days between today and say, March 10th, 2015, I can just enter the simple formula.
Lets say the static date is March 10th, 2015, and is in cell O5.
The formula to determine the number of days between today and O5 would be, =O5-Today()
Nothing fancy or DATEDIF stuff. Obviously, the cell where you type this formula in must have a data type of 'number'. Just type your date in normally in the reference cell, in this case O5.
BOM tends to boom (no pun intended (sic)) somewhere, someplace. And when it booms (for example, doesn't get recognized by browsers, editors, etc.), it shows up as the weird characters 
at the start of the document (for example, HTML file, JSON response, RSS, etc.) and causes the kind of embarrassments like the recent encoding issue experienced during the talk of Obama on Twitter.
It's very annoying when it shows up at places hard to debug or when testing is neglected. So it's best to avoid it unless you must use it.
use this(assume that your table name is emails):
select * from emails as a
inner join
(select EmailAddress, min(Id) as id from emails
group by EmailAddress ) as b
on a.EmailAddress = b.EmailAddress
and a.Id = b.id
hope this help..
If one or both of the files you wish to compare isn't in an Eclipse project:
Open the Quick Access search box
Type compare and select Compare With Other Resource
Select the files to compare ? OK
You can also create a keyboard shortcut for Compare With Other Resource by going to Window ? Preferences ? General ? Keys
I needed time only up to one day, 24h, this was my take:
const milliseconds = 5680000;_x000D_
_x000D_
const hours = `0${new Date(milliseconds).getHours() - 1}`.slice(-2);_x000D_
const minutes = `0${new Date(milliseconds).getMinutes()}`.slice(-2);_x000D_
const seconds = `0${new Date(milliseconds).getSeconds()}`.slice(-2);_x000D_
_x000D_
const time = `${hours}:${minutes}:${seconds}`_x000D_
console.log(time);
_x000D_
you could get days this way as well if needed.
You can use these to factor out code common to all tests in the test suite.
If you have a lot of repeated code in your tests, you can make them shorter by moving this code to setUp/tearDown.
You might use this for creating test data (e.g. setting up fakes/mocks), or stubbing out functions with fakes.
If you're doing integration testing, you can use check environmental pre-conditions in setUp, and skip the test if something isn't set up properly.
For example:
class TurretTest(unittest.TestCase):
def setUp(self):
self.turret_factory = TurretFactory()
self.turret = self.turret_factory.CreateTurret()
def test_turret_is_on_by_default(self):
self.assertEquals(True, self.turret.is_on())
def test_turret_turns_can_be_turned_off(self):
self.turret.turn_off()
self.assertEquals(False, self.turret.is_on())
For me, some of the answers mentioned earlier were helpful from understanding point of view, but those didn't solve my problem.
So this is what I did to solve issue.
Bundler -v
command). I had version 1.12.5 installedgem install bundler -v '1.11.2'
) Use the following Python program via command line to create png images from Font-Awesome icons:
For completeness here is another method for emulating INTERSECT
. Note that the IN (SELECT ...)
form suggested in other answers is generally more efficient.
Generally for a table called mytable
with a primary key called id
:
SELECT id
FROM mytable AS a
INNER JOIN mytable AS b ON a.id = b.id
WHERE
(a.col1 = "someval")
AND
(b.col1 = "someotherval")
(Note that if you use SELECT *
with this query you will get twice as many columns as are defined in mytable
, this is because INNER JOIN
generates a Cartesian product)
The INNER JOIN
here generates every permutation of row-pairs from your table. That means every combination of rows is generated, in every possible order. The WHERE
clause then filters the a
side of the pair, then the b
side. The result is that only rows which satisfy both conditions are returned, just like intersection two queries would do.
What is wrong with List<T>.Sort()
?
https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.list-1.sort#overloads
In addition to Jon Skeet's answer, I'd like to explain why most of the time when using ==
you actually get the answer true
on different string instances with the same value:
string a = "Hell";
string b = "Hello";
a = a + "o";
Console.WriteLine(a == b);
As you can see, a
and b
must be different string instances, but because strings are immutable, the runtime uses so called string interning to let both a
and b
reference the same string in memory. The ==
operator for objects checks reference, and since both a
and b
reference the same instance, the result is true
. When you change either one of them, a new string instance is created, which is why string interning is possible.
By the way, Jon Skeet's answer is not complete. Indeed, x == y
is false
but that is only because he is comparing objects and objects compare by reference. If you'd write (string)x == (string)y
, it will return true
again. So strings have their ==-operator overloaded, which calls String.Equals
underneath.
Give a class .border-lb
and give this CSS
.border-lb {border: 1px solid #ccc; border-width: 0 0 1px 1px;}
And the HTML
<table width="770">
<tr>
<td class="border-lb">picture (border only to the left and bottom ) </td>
<td>text</td>
</tr>
<tr>
<td>text</td>
<td class="border-lb">picture (border only to the left and bottom) </td>
</tr>
</table>
You can easily enable debugging support using an option for the @EnableWebSecurity
annotation:
@EnableWebSecurity(debug = true)
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
…
}
I'd probably use a LEFT JOIN
, which will return rows even if there's no match, and then you can select only the rows with no match by checking for NULL
s.
So, something like:
SELECT V.*
FROM voter V LEFT JOIN elimination E ON V.id = E.voter_id
WHERE E.voter_id IS NULL
Whether that's more or less efficient than using a subquery depends on optimization, indexes, whether its possible to have more than one elimination per voter, etc.
Just use CASCADE
TRUNCATE "products" RESTART IDENTITY CASCADE;
But be ready for cascade deletes )
<?php
$args = array(
'post_type' => 'product',
'posts_per_page' => 10,
'product_cat' => 'hoodies'
);
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post();
global $product;
echo '<br /><a href="'.get_permalink().'">' . woocommerce_get_product_thumbnail().' '.get_the_title().'</a>';
endwhile;
wp_reset_query();
?>
This will list all product thumbnails and names along with their links to product page. change the category name and posts_per_page as per your requirement.
its very easy. Use the bellow code, Its works for me. Here I have used fontawesome icon but you can use anything as image or any other Icon's code.
$(document).ready(function(){
$('.slider').slick({
autoplay:true,
arrows: true,
prevArrow:"<button type='button' class='slick-prev pull-left'><i class='fa fa-angle-left' aria-hidden='true'></i></button>",
nextArrow:"<button type='button' class='slick-next pull-right'><i class='fa fa-angle-right' aria-hidden='true'></i></button>"
});
});
I think you can adapt the function to substract the two timestamps:
return EXTRACT(MINUTE FROM
TO_TIMESTAMP(to_char(p_date1,'DD-MON-YYYY HH:MI:SS'),'DD-MON-YYYY HH24:MI:SS')
-
TO_TIMESTAMP(to_char(p_date2,'DD-MON-YYYY HH:MI:SS'),'DD-MON-YYYY HH24:MI:SS')
);
I think you could simplify it by just using CAST(p_date as TIMESTAMP)
.
return EXTRACT(MINUTE FROM cast(p_date1 as TIMESTAMP) - cast(p_date2 as TIMESTAMP));
Remember dates and timestamps are big ugly numbers inside Oracle, not what we see in the screen; we don't need to tell him how to read them. Also remember timestamps can have a timezone defined; not in this case.
I may be late to the party, but this is something which bugged me for too long. In my experience, I would rather want to see which changes are pending than update my working copy and deal with those changes.
This goes in the ~/.gitconfig
file:
[alias]
diffpull=!git fetch && git diff HEAD..@{u}
It fetches the current branch, then does a diff between the working copy and this fetched branch. So you should only see the changes that would come with git pull
.
The expression $(document).ready(function() deprecated in jQuery3.
See working fiddle with jQuery 3 here
Take into account I didn't include the showless button.
Here's the code:
JS
$(function () {
x=3;
$('#myList li').slice(0, 3).show();
$('#loadMore').on('click', function (e) {
e.preventDefault();
x = x+5;
$('#myList li').slice(0, x).slideDown();
});
});
CSS
#myList li{display:none;
}
#loadMore {
color:green;
cursor:pointer;
}
#loadMore:hover {
color:black;
}
In a new Php 5.6, you can use ... operator
instead of using func_get_args()
.
So, using this, you can get all the parameters you pass:
function manyVars(...$params) {
var_dump($params);
}
The whole point of getting things out as IEnumerable is so you can lazily iterate over the contents. As such, there isn't really a concept of an index. What you are doing really doesn't make a lot of sense for an IEnumerable. If you need something that supports access by index, put it in an actual list or collection.
To center Button in panel o in other container follow this step:
You get the question-mark-diamond characters when your textfile uses high-ANSI encoding -- meaning it uses characters between 127 and 255. Those characters have the eighth (i.e. the most significant) bit set. When ASP.NET reads the textfile it assumes UTF-8 encoding, and that most significant bit has a special meaning.
You must force ASP.NET to interpret the textfile as high-ANSI encoding, by telling it the codepage is 1252:
String textFilePhysicalPath = System.Web.HttpContext.Current.Server.MapPath("~/textfiles/MyInputFile.txt");
String contents = File.ReadAllText(textFilePhysicalPath, System.Text.Encoding.GetEncoding(1252));
lblContents.Text = contents.Replace("\n", "<br />"); // change linebreaks to HTML
For both Python 3 and Python 2, this works:
try:
from urllib.request import Request, urlopen # Python 3
except ImportError:
from urllib2 import Request, urlopen # Python 2
req = Request('http://api.company.com/items/details?country=US&language=en')
req.add_header('apikey', 'xxx')
content = urlopen(req).read()
print(content)
string[] filePaths = Directory.GetFiles(@"c:\MyDir\");
foreach (string filePath in filePaths)
File.Delete(filePath);
Or in a single line:
Array.ForEach(Directory.GetFiles(@"c:\MyDir\"), File.Delete);
In the MySQL interactive client you can type:
source yourfile.sql
Alternatively you can pipe the data into mysql from the command line:
mysql < yourfile.sql
If the file doesn't specify a database then you will also need to add that:
mysql db_name < yourfile.sql
See the documentation for more details:
The best solution for me is an extension with a function. Create a swift file with this extension
First is the UIWindow extension:
public extension UIWindow {
var visibleViewController: UIViewController? {
return UIWindow.visibleVC(vc: self.rootViewController)
}
static func visibleVC(vc: UIViewController?) -> UIViewController? {
if let navigationViewController = vc as? UINavigationController {
return UIWindow.visibleVC(vc: navigationViewController.visibleViewController)
} else if let tabBarVC = vc as? UITabBarController {
return UIWindow.visibleVC(vc: tabBarVC.selectedViewController)
} else {
if let presentedVC = vc?.presentedViewController {
return UIWindow.visibleVC(vc: presentedVC)
} else {
return vc
}
}
}
}
inside that file add function
func visibleViewController() -> UIViewController? {
let appDelegate = UIApplication.shared.delegate
if let window = appDelegate!.window {
return window?.visibleViewController
}
return nil
}
And if you want to use it, you can call it anywhere. Example:
override func viewDidLoad() {
super.viewDidLoad()
if let topVC = visibleViewController() {
//show some label or text field
}
}
File code is like this:
import UIKit
public extension UIWindow {
var visibleViewController: UIViewController? {
return UIWindow.visibleVC(vc: self.rootViewController)
}
static func visibleVC(vc: UIViewController?) -> UIViewController? {
if let navigationViewController = vc as? UINavigationController {
return UIWindow.visibleVC(vc: navigationViewController.visibleViewController)
} else if let tabBarVC = vc as? UITabBarController {
return UIWindow.visibleVC(vc: tabBarVC.selectedViewController)
} else {
if let presentedVC = vc?.presentedViewController {
return UIWindow.visibleVC(vc: presentedVC)
} else {
return vc
}
}
}
}
func visibleViewController() -> UIViewController? {
let appDelegate = UIApplication.shared.delegate
if let window = appDelegate!.window {
return window?.visibleViewController
}
return nil
}
You can use $expr ( 3.6 mongo version operator ) to use aggregation functions in regular query.
Compare query operators
vs aggregation comparison operators
.
db.accommodations.find({$expr:{$gt:[{$size:"$name"}, 1]}})
Getting encoding right is really tricky - there are too many layers:
The SQL command "SET CHARSET utf8" from PHP will ensure that the client side (PHP) will get the data in utf8, no matter how they are stored in the database. Of course, they need to be stored correctly first.
Encoding defined for a table/column doesn't really mean that the data are in that encoding. If you happened to have a table defined as utf8
but stored as differtent encoding, then MySQL will treat them as utf8
and you're in trouble. Which means you have to fix this first.
You need to check in what encoding the data flow at each layer.
If you receive data in e.g. windows-1250
, and want to store in utf-8
, then use this SQL before storing:
SET NAMES 'cp1250';
If you have data in DB as windows-1250
and want to retreive utf8
, use:
SET CHARSET 'utf8';
You can avoid the error by setting default device before launching application. Launch the AVD before starting the app.
There is a library for this BarCode PHP. You just need to include a few files:
require_once('class/BCGFontFile.php');
require_once('class/BCGColor.php');
require_once('class/BCGDrawing.php');
You can generate many types of barcodes, namely 1D or 2D. Add the required library:
require_once('class/BCGcode39.barcode.php');
Generate the colours:
// The arguments are R, G, and B for color.
$colorFront = new BCGColor(0, 0, 0);
$colorBack = new BCGColor(255, 255, 255);
After you have added all the codes, you will get this way:
Example
Since several have asked for an example here is what I was able to do to get it done
require_once('class/BCGFontFile.php');
require_once('class/BCGColor.php');
require_once('class/BCGDrawing.php');
require_once('class/BCGcode128.barcode.php');
header('Content-Type: image/png');
$color_white = new BCGColor(255, 255, 255);
$code = new BCGcode128();
$code->parse('HELLO');
$drawing = new BCGDrawing('', $color_white);
$drawing->setBarcode($code);
$drawing->draw();
$drawing->finish(BCGDrawing::IMG_FORMAT_PNG);
If you want to actually create the image file so you can save it then change
$drawing = new BCGDrawing('', $color_white);
to
$drawing = new BCGDrawing('image.png', $color_white);
codes need to save UTF8 without BOM while recording. Sometimes, written codes with (Notepad++) or other coding tools and use UTF8 encode, this error occurs. I'm sorry, I do not know English. This is just my experience.
you can also covert int to str first and assign index to it then again convert it to int like this:
int(str(x)[n]) //where x is an integer value
var map;
var infowindow;
...
function createMarker(...) {
var marker = new google.maps.Marker({...});
google.maps.event.addListener(marker, 'click', function() {
...
if (infowindow) {
infowindow.close();
};
infowindow = new google.maps.InfoWindow({
content: contentString,
maxWidth: 300
});
infowindow.open(map, marker);
}
...
function initialize() {
...
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
...
google.maps.event.addListener(map, 'click', function(event) {
if (infowindow) {
infowindow.close();
};
...
}
}