You can prefix attributes with ng-attr
to eval an Angular expression. When the result of the expressions undefined this removes the value from the attribute.
<a ng-attr-href="{{value || undefined}}">Hello World</a>
Will produce (when value is false)
<a ng-attr-href="{{value || undefined}}" href>Hello World</a>
So don't use false
because that will produce the word "false" as the value.
<a ng-attr-href="{{value || false}}" href="false">Hello World</a>
When using this trick in a directive. The attributes for the directive will be false if they are missing a value.
For example, the above would be false.
function post($scope, $el, $attr) {
var url = $attr['href'] || false;
alert(url === false);
}
Since your coordinates belong together as pairs, why not write a struct for them?
struct CoordinatePair
{
int x;
int y;
};
Then you can write an overloaded extraction operator for istreams:
std::istream& operator>>(std::istream& is, CoordinatePair& coordinates)
{
is >> coordinates.x >> coordinates.y;
return is;
}
And then you can read a file of coordinates straight into a vector like this:
#include <fstream>
#include <iterator>
#include <vector>
int main()
{
char filename[] = "coordinates.txt";
std::vector<CoordinatePair> v;
std::ifstream ifs(filename);
if (ifs) {
std::copy(std::istream_iterator<CoordinatePair>(ifs),
std::istream_iterator<CoordinatePair>(),
std::back_inserter(v));
}
else {
std::cerr << "Couldn't open " << filename << " for reading\n";
}
// Now you can work with the contents of v
}
Here is my class for show empty view, retry view (when load api failed) and loading progress for RecyclerView
public class RecyclerViewEmptyRetryGroup extends RelativeLayout {
private RecyclerView mRecyclerView;
private LinearLayout mEmptyView;
private LinearLayout mRetryView;
private ProgressBar mProgressBar;
private OnRetryClick mOnRetryClick;
public RecyclerViewEmptyRetryGroup(Context context) {
this(context, null);
}
public RecyclerViewEmptyRetryGroup(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public RecyclerViewEmptyRetryGroup(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
public void onViewAdded(View child) {
super.onViewAdded(child);
if (child.getId() == R.id.recyclerView) {
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
return;
}
if (child.getId() == R.id.layout_empty) {
mEmptyView = (LinearLayout) findViewById(R.id.layout_empty);
return;
}
if (child.getId() == R.id.layout_retry) {
mRetryView = (LinearLayout) findViewById(R.id.layout_retry);
mRetryView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mRetryView.setVisibility(View.GONE);
mOnRetryClick.onRetry();
}
});
return;
}
if (child.getId() == R.id.progress_bar) {
mProgressBar = (ProgressBar) findViewById(R.id.progress_bar);
}
}
public void loading() {
mRetryView.setVisibility(View.GONE);
mEmptyView.setVisibility(View.GONE);
mProgressBar.setVisibility(View.VISIBLE);
}
public void empty() {
mEmptyView.setVisibility(View.VISIBLE);
mRetryView.setVisibility(View.GONE);
mProgressBar.setVisibility(View.GONE);
}
public void retry() {
mRetryView.setVisibility(View.VISIBLE);
mEmptyView.setVisibility(View.GONE);
mProgressBar.setVisibility(View.GONE);
}
public void success() {
mRetryView.setVisibility(View.GONE);
mEmptyView.setVisibility(View.GONE);
mProgressBar.setVisibility(View.GONE);
}
public RecyclerView getRecyclerView() {
return mRecyclerView;
}
public void setOnRetryClick(OnRetryClick onRetryClick) {
mOnRetryClick = onRetryClick;
}
public interface OnRetryClick {
void onRetry();
}
}
activity_xml
<...RecyclerViewEmptyRetryGroup
android:id="@+id/recyclerViewEmptyRetryGroup">
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"/>
<LinearLayout
android:id="@+id/layout_empty">
...
</LinearLayout>
<LinearLayout
android:id="@+id/layout_retry">
...
</LinearLayout>
<ProgressBar
android:id="@+id/progress_bar"/>
</...RecyclerViewEmptyRetryGroup>
The source is here https://github.com/PhanVanLinh/AndroidRecyclerViewWithLoadingEmptyAndRetry
Assuming the upper is the upper bound and lower is the lower bound, then you can make a random number, r, between the two bounds with:
int r = (int) (Math.random() * (upper - lower)) + lower;
I've discovered that you can use eval to avoid using a subshell. Thus:
IFS=$'\n' eval 'echo "${my_array[*]}"'
From Python Documentation:
An except clause may name multiple exceptions as a parenthesized tuple, for example
except (IDontLikeYouException, YouAreBeingMeanException) as e:
pass
Or, for Python 2 only:
except (IDontLikeYouException, YouAreBeingMeanException), e:
pass
Separating the exception from the variable with a comma will still work in Python 2.6 and 2.7, but is now deprecated and does not work in Python 3; now you should be using as
.
The code
my_list = [(1, 2), (3, 4), (5, 6)]
for t in my_list:
print t
prints
(1, 2)
(3, 4)
(5, 6)
The loop iterates over my_list
, and assigns the elements of my_list
to t
one after the other. The elements of my_list
happen to be tuples, so t
will always be a tuple. To access the first element of the tuple t
, use t[0]
:
for t in my_list:
print t[0]
To access the first element of the tuple at the given index i
in the list, you can use
print my_list[i][0]
You could try count(*)
Integer count = (Integer) session.createQuery("select count(*) from Books").uniqueResult();
Where Books
is the name off the class
- not the table in the database.
I wrote "Binary Tools for JavaScript", an open source project that includes the ability to unzip, unrar and untar: https://github.com/codedread/bitjs
Used in my comic book reader: https://github.com/codedread/kthoom (also open source).
HTH!
If you're already using lodash
, you could use the inRange()
function:
https://lodash.com/docs/4.17.15#inRange
_.inRange(3, 2, 4);
// => true
_.inRange(4, 8);
// => true
_.inRange(4, 2);
// => false
_.inRange(2, 2);
// => false
_.inRange(1.2, 2);
// => true
_.inRange(5.2, 4);
// => false
_.inRange(-3, -2, -6);
// => true
The break
statement breaks out of the loop (the next statement to be executed is the first one after the closing brace), while continue
starts the loop over at the next iteration.
If you want to run your scripts, then
mysql -u root -p < yourscript.sql
You need to install JMF first (download using this link)
File f = new File("D:/Songs/preview.mp3");
MediaLocator ml = new MediaLocator(f.toURL());
Player p = Manager.createPlayer(ml);
p.start();
don't forget to add JMF jar files
One issue you might run into is is_home()
returns true when a registered query_var is present in the home URL. For example, if http://example.com
displays a static page instead of the blog, http://example.com/?c=123
will return the blog.
See https://core.trac.wordpress.org/ticket/25143 and https://wordpress.org/support/topic/adding-query-var-makes-front-page-missing/ for more info on this.
What you can do (if you're not attempting to affect the query) is use add_rewrite_endpoint()
. It should be run during the init
action as it affects the rewrite rules. Eg.
add_action( 'init', 'add_custom_setcookie_rewrite_endpoints' );
function add_custom_setcookie_rewrite_endpoints() {
//add ?c=123 endpoint with
//EP_ALL so endpoint is present across all places
//no effect on the query vars
add_rewrite_endpoint( 'c', EP_ALL, $query_vars = false );
}
This should give you access to $_GET['c']
when the url contains more information like www.example.com/news?c=123
.
Remember to flush your rewrite rules after adding/modifying this.
Input: 0 0.1 1000
=FIXED(E5,2)
Output: 0.00 0.10 1,000.00
=TEXT(E5,"0.00")
Output: 0.00 0.10 1000.00
Note: As you can see FIXED add a coma after a thousand, where TEXT does not.
This is an implementation of aforementioned StanLe's anwer, also fixing the case where his answer would produce no curve when using densities.
This replaces the existing but hidden hist.default()
function, to only add the normalcurve
parameter (which defaults to TRUE
).
The first three lines are to support roxygen2 for package building.
#' @noRd
#' @exportMethod hist.default
#' @export
hist.default <- function(x,
breaks = "Sturges",
freq = NULL,
include.lowest = TRUE,
normalcurve = TRUE,
right = TRUE,
density = NULL,
angle = 45,
col = NULL,
border = NULL,
main = paste("Histogram of", xname),
ylim = NULL,
xlab = xname,
ylab = NULL,
axes = TRUE,
plot = TRUE,
labels = FALSE,
warn.unused = TRUE,
...) {
# https://stackoverflow.com/a/20078645/4575331
xname <- paste(deparse(substitute(x), 500), collapse = "\n")
suppressWarnings(
h <- graphics::hist.default(
x = x,
breaks = breaks,
freq = freq,
include.lowest = include.lowest,
right = right,
density = density,
angle = angle,
col = col,
border = border,
main = main,
ylim = ylim,
xlab = xlab,
ylab = ylab,
axes = axes,
plot = plot,
labels = labels,
warn.unused = warn.unused,
...
)
)
if (normalcurve == TRUE & plot == TRUE) {
x <- x[!is.na(x)]
xfit <- seq(min(x), max(x), length = 40)
yfit <- dnorm(xfit, mean = mean(x), sd = sd(x))
if (isTRUE(freq) | (is.null(freq) & is.null(density))) {
yfit <- yfit * diff(h$mids[1:2]) * length(x)
}
lines(xfit, yfit, col = "black", lwd = 2)
}
if (plot == TRUE) {
invisible(h)
} else {
h
}
}
Quick example:
hist(g)
For dates it's bit different. For reference:
#' @noRd
#' @exportMethod hist.Date
#' @export
hist.Date <- function(x,
breaks = "months",
format = "%b",
normalcurve = TRUE,
xlab = xname,
plot = TRUE,
freq = NULL,
density = NULL,
start.on.monday = TRUE,
right = TRUE,
...) {
# https://stackoverflow.com/a/20078645/4575331
xname <- paste(deparse(substitute(x), 500), collapse = "\n")
suppressWarnings(
h <- graphics:::hist.Date(
x = x,
breaks = breaks,
format = format,
freq = freq,
density = density,
start.on.monday = start.on.monday,
right = right,
xlab = xlab,
plot = plot,
...
)
)
if (normalcurve == TRUE & plot == TRUE) {
x <- x[!is.na(x)]
xfit <- seq(min(x), max(x), length = 40)
yfit <- dnorm(xfit, mean = mean(x), sd = sd(x))
if (isTRUE(freq) | (is.null(freq) & is.null(density))) {
yfit <- as.double(yfit) * diff(h$mids[1:2]) * length(x)
}
lines(xfit, yfit, col = "black", lwd = 2)
}
if (plot == TRUE) {
invisible(h)
} else {
h
}
}
Assuming the following command works successfully:
mysql -u username -p -h remote.site.com
The syntax for mysqldump
is identical, and outputs the database dump to stdout
. Redirect the output to a local file on the computer:
mysqldump -u username -p -h remote.site.com DBNAME > backup.sql
Replace DBNAME
with the name of the database you'd like to download to your computer.
You can try this:
$('.show_hide').click(function () {
$(".slidingDiv").toggle("'slide', {direction: 'right' }, 1000");
});
Like this:
my_function (null, options) // for options only
my_function (content) // for content only
my_function (content, options) // for both
You would generally test these sorts of things in an integration test, which actually connects to a service. To do a unit test, you should test the objects used by your servlet's doGet/doPost methods.
In general you don't want to have much code in your servlet methods, you would want to create a bean class to handle operations and pass your own objects to it and not servlet API objects.
simply change <div>
to <tbody>
<table id="authenticationSetting" style="display: none">
<tbody id="authenticationOuterIdentityBlock" style="display: none;">
<tr>
<td class="orionSummaryHeader">
<orion:message key="policy.wifi.enterprise.authentication.outeridentitity" />:</td>
<td class="orionSummaryColumn">
<orion:textbox id="authenticationOuterIdentity" size="30" />
</td>
</tr>
</tbody>
</table>
onChange doesn't fire until you lose focus later. If you want to be really strict with instantaneous changes of all sorts, use:
<input
type = "text"
onchange = "myHandler();"
onkeypress = "this.onchange();"
onpaste = "this.onchange();"
oninput = "this.onchange();"
/>
If you face this error when you start Symfony project with docker (my Symfony version 5.1). Or errors like these:
Uncaught Exception: Failed to write file "/var/www/html/mysite.com.local/var/cache/dev/App_KernelDevDebugContainer.xml"" while reading upstream
Uncaught Warning: file_put_contents(/var/www/html/mysite.com.local/var/cache/dev/App_KernelDevDebugContainerDeprecations.log): failed to open stream: Permission denied" while reading upstream
Fix below helped me.
In Dockerfile for nginx container add line:
RUN usermod -u 1000 www-data
In Dockerfile for php-fpm container add line:
RUN usermod -u 1000 www-data
Then remove everything in directories "/var/cache", "/var/log" and rebuild docker's containers.
Now you can achieve this on the client side like this:
var green = '3CB54A';
var red = 'ED1F24';
var svg = '<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="320px" height="100px" viewBox="0 0 320 100" enable-background="new 0 0 320 100" xml:space="preserve"> <polygon class="mystar" fill="#'+green+'" points="134.973,14.204 143.295,31.066 161.903,33.77 148.438,46.896 151.617,65.43 134.973,56.679 118.329,65.43 121.507,46.896 108.042,33.77 126.65,31.066 "/><circle class="mycircle" fill="#'+red+'" cx="202.028" cy="58.342" r="12.26"/></svg>';
var encoded = window.btoa(svg);
document.body.style.background = "url(data:image/svg+xml;base64,"+encoded+")";
I do not know why everyone has seem to overlook the site.css file in the Content folder. Look at line 22 in this file and you will see the settings for input to be controlled. It would appear that your site is not referencing this style sheet.
I added this:
input, select, textarea { max-width: 280px;}
to your fiddle and it works just fine.
You should never ever update bootstrap.css or bootstrap.min.css. Doing so will set you up to fail when bootstrap gets updated. That is why the site.css file is included. This is where you can make changes to site that will still give you the responsive design you are looking for.
Use BoxDecoration
with BoxShadow
.
Here is a visual demo manipulating the following options:
The animated gif doesn't do so well with colors. You can try it yourself on a device.
Here is the full code for that demo:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: ShadowDemo(),
),
);
}
}
class ShadowDemo extends StatefulWidget {
@override
_ShadowDemoState createState() => _ShadowDemoState();
}
class _ShadowDemoState extends State<ShadowDemo> {
var _image = NetworkImage('https://placebear.com/300/300');
var _opacity = 1.0;
var _xOffset = 0.0;
var _yOffset = 0.0;
var _blurRadius = 0.0;
var _spreadRadius = 0.0;
@override
Widget build(BuildContext context) {
return Stack(
children: <Widget>[
Center(
child:
Container(
decoration: BoxDecoration(
color: Color(0xFF0099EE),
boxShadow: [
BoxShadow(
color: Color.fromRGBO(0, 0, 0, _opacity),
offset: Offset(_xOffset, _yOffset),
blurRadius: _blurRadius,
spreadRadius: _spreadRadius,
)
],
),
child: Image(image:_image, width: 100, height: 100,),
),
),
Align(
alignment: Alignment.bottomCenter,
child: Padding(
padding: const EdgeInsets.only(bottom: 80.0),
child: Column(
children: <Widget>[
Spacer(),
Slider(
value: _opacity,
min: 0.0,
max: 1.0,
onChanged: (newValue) =>
{
setState(() => _opacity = newValue)
},
),
Slider(
value: _xOffset,
min: -100,
max: 100,
onChanged: (newValue) =>
{
setState(() => _xOffset = newValue)
},
),
Slider(
value: _yOffset,
min: -100,
max: 100,
onChanged: (newValue) =>
{
setState(() => _yOffset = newValue)
},
),
Slider(
value: _blurRadius,
min: 0,
max: 100,
onChanged: (newValue) =>
{
setState(() => _blurRadius = newValue)
},
),
Slider(
value: _spreadRadius,
min: 0,
max: 100,
onChanged: (newValue) =>
{
setState(() => _spreadRadius = newValue)
},
),
],
),
),
)
],
);
}
}
The following can be used to remove only multi blank lines (reduce them to a single blank line) and leaving single blank lines intact:
:g/^\_$\n\_^$/d
Maybe a little late to reply. I happen to run into the same problem today. I find that on Windows you can change the console encoder to utf-8
or other encoder that can represent your data. Then you can print it to sys.stdout
.
First, run following code in the console:
chcp 65001
set PYTHONIOENCODING=utf-8
Then, start python
do anything you want.
the easiest and safest way is to use something like this:
var waitForJQuery = setInterval(function () {
if (typeof $ != 'undefined') {
// place your code here.
clearInterval(waitForJQuery);
}
}, 10);
Ideally, every custom watch should be removed when you leave the scope.
It helps in better memory management and better app performance.
// call to $watch will return a de-register function
var listener = $scope.$watch(someVariableToWatch, function(....));
$scope.$on('$destroy', function() {
listener(); // call the de-register function on scope destroy
});
Another tip that would help a lot is that to set the current directory to a different drive one would have to use %~d0
first, then cd %~dp0
. This will change the directory to the batch file's drive, then change to its folder.
Alternatively, for #oneLinerLovers, as @Omni pointed out in the comments cd /d %~dp0
will change both the drive and directory :)
Hope this helps someone.
I found the GNU Introduction to PDF to be helpful in understanding the structure. It includes an easily readable example PDF file that they describe in complete detail.
Other helpful links:
The default submit Action is Ext.form.action.Submit, which uses an Ajax request to submit the form's values to a configured URL. To enable normal browser submission of an Ext form, use the standardSubmit config option.
Link: http://docs.sencha.com/extjs/4.2.1/#!/api/Ext.form.Basic-cfg-standardSubmit
solution: put standardSubmit :true in your config. Hope that this will help you :)
To center align an unordered list, you need to use the CSS text align property. In addition to this, you also need to put the unordered list inside the div element.
Now, add the style to the div class and use the text-align property with center as its value.
See the below example.
<style>
.myDivElement{
text-align:center;
}
.myDivElement ul li{
display:inline;
}
</style>
<div class="myDivElement">
<ul>
<li>Home</li>
<li>About</li>
<li>Gallery</li>
<li>Contact</li>
</ul>
</div>
Here is the reference website Center Align Unordered List
Why should the function be restricted to 3 arguments? Also, check for hasOwnProperty
.
function Collect() {
var o={};
for(var i=0;i<arguments.length;i++) {
var arg=arguments[i];
if(typeof arg != "object") continue;
for(var p in arg) {
if(arg.hasOwnProperty(p)) o[p] = arg[p];
}
}
return o;
}
I have another situation where I think it is perfectly reasonable to call the destructor.
When writing a "Reset" type of method to restore an object to its initial state, it is perfectly reasonable to call the Destructor to delete the old data that is being reset.
class Widget
{
private:
char* pDataText { NULL };
int idNumber { 0 };
public:
void Setup() { pDataText = new char[100]; }
~Widget() { delete pDataText; }
void Reset()
{
Widget blankWidget;
this->~Widget(); // Manually delete the current object using the dtor
*this = blankObject; // Copy a blank object to the this-object.
}
};
So the 50x50 size is a good choice.
Adding one of the blocks below works for me to use KDiff3 for my Windows and Linux development environments. It makes for a nice consistent cross-platform diff and merge tool.
[difftool "kdiff3"]
path = /usr/bin/kdiff3
trustExitCode = false
[difftool]
prompt = false
[diff]
tool = kdiff3
[mergetool "kdiff3"]
path = /usr/bin/kdiff3
trustExitCode = false
[mergetool]
keepBackup = false
[merge]
tool = kdiff3
[difftool "kdiff3"]
path = C:/Progra~1/KDiff3/kdiff3.exe
trustExitCode = false
[difftool]
prompt = false
[diff]
tool = kdiff3
[mergetool "kdiff3"]
path = C:/Progra~1/KDiff3/kdiff3.exe
trustExitCode = false
[mergetool]
keepBackup = false
[merge]
tool = kdiff3
@jim's answer is correct -- fuser
is what you want.
Additionally (or alternately), you can use lsof
to get more information including the username, in case you need permission (without having to run an additional command) to kill the process. (THough of course, if killing the process is what you want, fuser
can do that with its -k
option. You can have fuser
use other signals with the -s
option -- check the man page for details.)
For example, with a tail -F /etc/passwd
running in one window:
ghoti@pc:~$ lsof | grep passwd
tail 12470 ghoti 3r REG 251,0 2037 51515911 /etc/passwd
Note that you can also use lsof
to find out what processes are using particular sockets. An excellent tool to have in your arsenal.
The obj
directory is for intermediate object files and other transient data files that are generated by the compiler or build system during a build. The bin
directory is the directory that final output binaries (and any dependencies or other deployable files) will be written to.
You can change the actual directories used for both purposes within the project settings, if you like.
I might have a simple answer for the question without extending the TextView and implementing a long code.
Code :
TextView tv = (TextView) findViewById(R.id.textview1);
tv.setTypeface(Typeface.createFromAsset(getAssets(), "font.ttf"));
Place the custom font file in assets folder as usual and try this. It works for me. I just dont understand why peter has given such a huge code for this simple thing or he has given his answer in old version.
That's simple. It's explained in man bash
:
/bin/bash
The bash executable
/etc/profile
The systemwide initialization file, executed for login shells
~/.bash_profile
The personal initialization file, executed for login shells
~/.bashrc
The individual per-interactive-shell startup file
~/.bash_logout
The individual login shell cleanup file, executed when a login shell exits
~/.inputrc
Individual readline initialization file
Login shells are the ones that are read one you login (so, they are not executed when merely starting up xterm, for example). There are other ways to login. For example using an X display manager. Those have other ways to read and export environment variables at login time.
Also read the INVOCATION
chapter in the manual. It says "The following paragraphs describe how bash executes its startup files.", i think that's a spot-on :) It explains what an "interactive" shell is too.
Bash does not know about .environment
. I suspect that's a file of your distribution, to set environment variables independent of the shell that you drive.
assert
is a debugging tool that will cause the program to throw an AssertionFailed
exception if the condition is not true. In this case, the program will throw an exception if either of the two conditions following it evaluate to false. Generally speaking, assert
should not be used in production code
https://github.com/mleibman/SlickGrid/wiki
"SlickGrid utilizes virtual rendering to enable you to easily work with hundreds of thousands of items without any drop in performance. In fact, there is no difference in performance between working with a grid with 10 rows versus a 100’000 rows."
Some highlights:
It's free (MIT license). It uses jQuery.
With the help of the given links I was able to solve the problem myself. The correct way is to get the resource ID with
getResources().getIdentifier("FILENAME_WITHOUT_EXTENSION",
"raw", getPackageName());
To get it as a InputStream
InputStream ins = getResources().openRawResource(
getResources().getIdentifier("FILENAME_WITHOUT_EXTENSION",
"raw", getPackageName()));
The question "Why do we need to install gulp globally and locally?" can be broken down into the following two questions:
Why do I need to install gulp locally if I've already installed it globally?
Why do I need to install gulp globally if I've already installed it locally?
Several others have provided excellent answers to theses questions in isolation, but I thought it would be beneficial to consolidate the information in a unified answer.
Why do I need to install gulp locally if I've already installed it globally?
The rationale for installing gulp locally is comprised of several reasons:
Why do I need to install gulp globally if I've already installed it locally?
To avoid installing locally you can use npm link [package]
, but the link command as well as the install --global
command doesn't seem to support the --save-dev
option which means there doesn't appear to be an easy way to install gulp globally and then easily add whatever version that is to your local package.json file.
Ultimately, I believe it makes more sense to have the option of using global modules to avoid having to duplicate the installation of common tools across all your projects, especially in the case of development tools such as grunt, gulp, jshint, etc. Unfortunately it seems you end up fighting the tools a bit when you go against the grain.
You can remove illegal chars using Linq like this:
var invalidChars = Path.GetInvalidFileNameChars();
var invalidCharsRemoved = stringWithInvalidChars
.Where(x => !invalidChars.Contains(x))
.ToArray();
EDIT
This is how it looks with the required edit mentioned in the comments:
var invalidChars = Path.GetInvalidFileNameChars();
string invalidCharsRemoved = new string(stringWithInvalidChars
.Where(x => !invalidChars.Contains(x))
.ToArray());
I ended up here because I was trying to conditionally add header parameters in Swagger UI, based on my own [Authentication]
attribute I added to my API method. Following the hint that @Corcus listed in a comment, I was able to derive my solution, and hopefully it will help others.
Using Reflection, it's checking if the method nested down in apiDescription
has the desired attribute (MyApiKeyAuthenticationAttribute, in my case). If it does, I can append my desired header parameters.
public void Apply(Operation operation, SchemaRegistry schemaRegistry, ApiDescription apiDescription) {
if (operation.parameters == null)
operation.parameters = new List<Parameter>();
var attributes = ((System.Web.Http.Controllers.ReflectedHttpActionDescriptor)
((apiDescription.ActionDescriptor).ActionBinding.ActionDescriptor)).MethodInfo
.GetCustomAttributes(false);
if(attributes != null && attributes.Any()) {
if(attributes.Where(x => x.GetType()
== typeof(MyApiKeyAuthenticationAttribute)).Any()) {
operation.parameters.Add(new Parameter {
name = "MyApiKey",
@in = "header",
type = "string",
description = "My API Key",
required = true
});
operation.parameters.Add(new Parameter {
name = "EID",
@in = "header",
type = "string",
description = "Employee ID",
required = true
});
}
}
}
Another yet simple solution is to paste these line into the build.gradle file
dependencies {
//import of gridlayout
compile 'com.android.support:gridlayout-v7:19.0.0'
compile 'com.android.support:appcompat-v7:+'
}
Java 8
If you are using Java 8 in your project and comparing java.sql.Timestamp
, you could use the LocalDate
class:
sameDate = date1.toLocalDateTime().toLocalDate().equals(date2.toLocalDateTime().toLocalDate());
If you are using java.util.Date
, have a look at Istvan answer which is less ambiguous.
You need a root node
<?xml version="1.0" encoding="ISO-8859-1"?>
<documents>
<document>
<name>Sample Document</name>
<type>document</type>
<url>http://nsc-component.webs.com/Office/Editor/new-doc.html?docname=New+Document&titletype=Title&fontsize=9&fontface=Arial&spacing=1.0&text=&wordcount3=0</url>
</document>
<document>
<name>Sample</name>
<type>document</type>
<url>http://nsc-component.webs.com/Office/Editor/new-doc.html?docname=New+Document&titletype=Title&fontsize=9&fontface=Arial&spacing=1.0&text=&</url>
</document>
</documents>
I ended up recording a Macro to save and compile in one step, and keymap Ctrl+s
to it.
If you're going for simple, you can avoid the "new" keyword entirely and just use factory methods. I prefer this, sometimes, because I like using JSON to create objects.
function getSomeObj(var1, var2){
var obj = {
instancevar1: var1,
instancevar2: var2,
someMethod: function(param)
{
//stuff;
}
};
return obj;
}
var myobj = getSomeObj("var1", "var2");
myobj.someMethod("bla");
I'm not sure what the performance hit is for large objects, though.
This works:
Iterator<Integer> iter = l.iterator();
while (iter.hasNext()) {
if (iter.next() == 5) {
iter.remove();
}
}
I assumed that since a foreach loop is syntactic sugar for iterating, using an iterator wouldn't help... but it gives you this .remove()
functionality.
Lambda can be any function. So if you had a function
def compare_person(a):
return a.age
You could sort a list of Person (each of which having an age attribute) like this:
sorted(personArray, key=compare_person)
This way, the list would be sorted by age in ascending order.
The parameter is called lambda because python has a nifty lambda keywords for defining such functions on the fly. Instead of defining a function compare_person and passing that to sorted, you can also write:
sorted(personArray, key=lambda a: a.age)
which does the same thing.
This is an elaboration on @Jeff M's and my comments.
When you do this:
a, b = c, d
It works with tuple packing and unpacking. You can separate the packing and unpacking steps:
_ = c, d
a, b = _
The first line creates a tuple called _
which has two elements, the first with the value of c
and the second with the value of d
. The second line unpacks the _
tuple into the variables a
and b
. This breaks down your one huge line:
a, b, c, d, e, f, g, h, i, j = True, True, True, True, True, False, True, True, True, True
Into two smaller lines:
_ = True, True, True, True, True, False, True, True, True, True
a, b, c, d, e, f, g, h, i, j = _
It will give you the exact same result as the first line (including the same exception if you add values or variables to one part but forget to update the other). However, in this specific case, yan's answer is perhaps the best.
If you have a list of values, you can still unpack them. You just have to convert it to a tuple first. For example, the following will assign a value between 0 and 9 to each of a
through j
, respectively:
a, b, c, d, e, f, g, h, i, j = tuple(range(10))
EDIT: Neat trick to assign all of them as true except element 5 (variable f
):
a, b, c, d, e, f, g, h, i, j = tuple(x != 5 for x in range(10))
I totally agree with the solution provided, but I think a little clarification is important I think, might be necessary.
For each process (read also: vshost.exe, yourWinformApplication.exe.svchost, or the name of your application.exe) that will need to add a DWORD with the value provided, in my case I leave 9000 (in decimal) in application name and running smoothly and error-free script.
the most common mistake is to believe that it is necessary to add "contoso.exe" AS IS and think it all work!
Another way to do it, with Java 8 and without external libs:
Stream.concat(collectionA.stream(), collectionB.stream())
.collect(Collectors.toList())
you're using a function
error(error)
but jquery is actually looking for a function with three parameters:
error(jqXHR, textStatus, errorThrown)
you'll need to add two more parameters.
ALSO: please have a look at all the comments above that mention 'deprecated' :)
$.ajax("www.stackoverflow.com/api/whatever", {
dataType:"JSON"
data: { id=1, name='example' }
}).succes(function (result) {
// use result
}).error(function (jqXHR, textStatus, errorThrown) {
// handle error
});
Just add:
import os
in the beginning, before:
from settings import PROJECT_ROOT
This will import the python's module os, which apparently is used later in the code of your module without being imported.
Have you considered reading a book on PHP security? Highly recommended.
I have had much success with the following method for non SSL certified sites.
Dis-allow multiple sessions under the same account, making sure you aren't checking this solely by IP address. Rather check by token generated upon login which is stored with the users session in the database, as well as IP address, HTTP_USER_AGENT and so forth
Using Relation based hyperlinks Generates a link ( eg. http://example.com/secure.php?token=2349df98sdf98a9asdf8fas98df8 ) The link is appended with a x-BYTE ( preferred size ) random salted MD5 string, upon page redirection the randomly generated token corresponds to a requested page.
Short Life-span session authentication cookie. as posted above, a cookie containing a secure string, which is one of the direct references to the sessions validity is a good idea. Make it expire every x Minutes, reissuing that token, and re-syncing the session with the new Data. If any mis-matches in the data, either log the user out, or having them re-authenticate their session.
I am in no means an expert on the subject, I'v had a bit of experience in this particular topic, hope some of this helps anyone out there.
What about using the following:
int number = input.nextInt();
if (number < 0) {
// negative
} else {
// it's a positive
}
I had to make the following changes for the popover to position below with some overlap and to show the arrow correctly.
js
case 'bottom-right':
tp = {top: pos.top + pos.height + 10, left: pos.left + pos.width - 40}
break
css
.popover.bottom-right .arrow {
left: 20px; /* MODIFIED */
margin-left: -11px;
border-top-width: 0;
border-bottom-color: #999;
border-bottom-color: rgba(0, 0, 0, 0.25);
top: -11px;
}
.popover.bottom-right .arrow:after {
top: 1px;
margin-left: -10px;
border-top-width: 0;
border-bottom-color: #ffffff;
}
This can be extended for arrow locations elsewhere .. enjoy!
The best way to understand would be to have all the LifeCycle methods overridden in your activity and placing a breakpoint(if checking in emulator) or a Log in each one of them. You'll get to know which one gets called when.
Just as an spoiler, onCreate()
gets called first, then if you paused the activity by either going to home screen or by launching another activity, onPause()
gets called. If the OS destroys the activity in the meantime, onDestroy()
gets called. If you resume the app and the app already got destroyed, onCreate()
will get called, or else onResume()
will get called.
Edit: I forgot about onStop()
, it gets called before onDestroy()
.
Do the exercise I mentioned and you'll be having a better understanding.
In oracle db there is a trick for casting int to float (I suppose, it should also work in mysql):
select myintfield + 0.0 as myfloatfield from mytable
While @Heximal's answer works, I don't personally recommend it.
This is because it uses implicit casting. Although you didn't type CAST
, either the SUM()
or the 0.0
need to be cast to be the same data-types, before the +
can happen. In this case the order of precedence is in your favour, and you get a float on both sides, and a float as a result of the +
. But SUM(aFloatField) + 0
does not yield an INT, because the 0
is being implicitly cast to a FLOAT.
I find that in most programming cases, it is much preferable to be explicit. Don't leave things to chance, confusion, or interpretation.
If you want to be explicit, I would use the following.
CAST(SUM(sl.parts) AS FLOAT) * cp.price
-- using MySQL CAST FLOAT requires 8.0
You can try the following to see what happens...
CAST(SUM(sl.parts) AS NUMERIC(10,4)) * CAST(cp.price AS NUMERIC(10,4))
Set the Current Cell like:
DataGridView1.CurrentCell = DataGridView1.Rows[rowindex].Cells[columnindex]
or
DataGridView1.CurrentCell = DataGridView1.Item("ColumnName", 5)
and you can directly focus with Editing by:
dataGridView1.BeginEdit(true)
This one is simplier :)
dataview dataview1;
this.dataview1= dataset.tables[0].defaultview;
this.dataview1.sort = "[ColumnName] ASC, [ColumnName] DESC";
this.datagridview.datasource = dataview1;
Change:
RANK() OVER (PARTITION BY ContenderNum ORDER BY totals ASC) AS xRank
to:
RANK() OVER (ORDER BY totals DESC) AS xRank
Have a look at this example:
You might also want to have a look at the difference between RANK (Transact-SQL) and DENSE_RANK (Transact-SQL):
RANK (Transact-SQL)
If two or more rows tie for a rank, each tied rows receives the same rank. For example, if the two top salespeople have the same SalesYTD value, they are both ranked one. The salesperson with the next highest SalesYTD is ranked number three, because there are two rows that are ranked higher. Therefore, the RANK function does not always return consecutive integers.
DENSE_RANK (Transact-SQL)
Returns the rank of rows within the partition of a result set, without any gaps in the ranking. The rank of a row is one plus the number of distinct ranks that come before the row in question.
Here is code for getting value return from Store procedure
Stored procedure:
alter proc [dbo].[UserlogincheckMVC]
@username nvarchar(max),
@password nvarchar(max)
as
begin
if exists(select Username from Adminlogin where Username =@username and Password=@password)
begin
return 1
end
else
begin
return 0
end
end
Code:
var parameters = new DynamicParameters();
string pass = EncrytDecry.Encrypt(objUL.Password);
conx.Open();
parameters.Add("@username", objUL.Username);
parameters.Add("@password", pass);
parameters.Add("@RESULT", dbType: DbType.Int32, direction: ParameterDirection.ReturnValue);
var RS = conx.Execute("UserlogincheckMVC", parameters, null, null, commandType: CommandType.StoredProcedure);
int result = parameters.Get<int>("@RESULT");
If you want to achieve this (you can resize the window to see how it will look for mobile version), all you have to do is to have 2 logo images (1 for desktop and one for mobile) and display them depending of the enviroment using visible-xs
and hidden-xs
classes.
So i used something like this:
<img class="hidden-xs" src="http://placehold.it/150x50&text=Logo" alt="">
<img class="visible-xs" src="http://placehold.it/120x40&text=Logo" alt="">
And ofcourse, i styled the mobile logo using:
@media (max-width: 767px) {
.navbar-brand {
padding: 0;
}
.navbar-brand img {
margin-top: 5px;
margin-left: 5px;
}
}
You can see all the code here. In case you need a text on mobile version insted of the logo, it's not a big deal. Just replace the logo with a <h1 class="visible-xs">AppName</h3>
and change the style inside the media query like this:
@media (max-width: 767px) {
.navbar-brand {
padding: 0;
}
.navbar-brand h1{
//here add your style depending of the position you want the text to be placed
}
}
EDIT:
You need this conditions to make it work:
.navbar-toggle {
margin: 23px 0;
}
.navbar-nav, .navbar-nav li, .navbar-nav li a {
height: 80px;
line-height: 80px;
}
.navbar-nav li a {
padding-top: 0;
padding-bottom:0;
}
This can be done safely using promises
function loadScript(src) {
return new Promise(function(resolve, reject) {
let script = document.createElement('script');
script.src = src;
script.onload = () => resolve(script);
script.onerror = () => reject(new Error("Script load error: " + src));
document.head.append(script);
});
}
and use like this
let promise = loadScript("https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.2.0/lodash.js");
promise.then(
script => alert(`${script.src} is loaded!`),
error => alert(`Error: ${error.message}`)
);
If you really need to do it in separate transaction you need to use REQUIRES_NEW
and live with the performance overhead. Watch out for dead locks.
I'd rather do it the other way:
Java has 5 different boolean compare operators: &, &&, |, ||, ^
& and && are "and" operators, | and || "or" operators, ^ is "xor"
The single ones will check every parameter, regardless of the values, before checking the values of the parameters.
The double ones will first check the left parameter and its value and if true
(||
) or false
(&&
) leave the second one untouched.
Sound compilcated? An easy example should make it clear:
Given for all examples:
String aString = null;
AND:
if (aString != null & aString.equals("lala"))
Both parameters are checked before the evaluation is done and a NullPointerException will be thrown for the second parameter.
if (aString != null && aString.equals("lala"))
The first parameter is checked and it returns false
, so the second paramter won't be checked, because the result is false
anyway.
The same for OR:
if (aString == null | !aString.equals("lala"))
Will raise NullPointerException, too.
if (aString == null || !aString.equals("lala"))
The first parameter is checked and it returns true
, so the second paramter won't be checked, because the result is true
anyway.
XOR can't be optimized, because it depends on both parameters.
input[type="checkbox"] {_x000D_
cursor: pointer;_x000D_
-webkit-appearance: none;_x000D_
-moz-appearance: none;_x000D_
appearance: none;_x000D_
outline: 0;_x000D_
background: lightgray;_x000D_
height: 16px;_x000D_
width: 16px;_x000D_
border: 1px solid white;_x000D_
}_x000D_
_x000D_
input[type="checkbox"]:checked {_x000D_
background: #2aa1c0;_x000D_
}_x000D_
_x000D_
input[type="checkbox"]:hover {_x000D_
filter: brightness(90%);_x000D_
}_x000D_
_x000D_
input[type="checkbox"]:disabled {_x000D_
background: #e6e6e6;_x000D_
opacity: 0.6;_x000D_
pointer-events: none;_x000D_
}_x000D_
_x000D_
input[type="checkbox"]:after {_x000D_
content: '';_x000D_
position: relative;_x000D_
left: 40%;_x000D_
top: 20%;_x000D_
width: 15%;_x000D_
height: 40%;_x000D_
border: solid #fff;_x000D_
border-width: 0 2px 2px 0;_x000D_
transform: rotate(45deg);_x000D_
display: none;_x000D_
}_x000D_
_x000D_
input[type="checkbox"]:checked:after {_x000D_
display: block;_x000D_
}_x000D_
_x000D_
input[type="checkbox"]:disabled:after {_x000D_
border-color: #7b7b7b;_x000D_
}
_x000D_
<input type="checkbox"><br>_x000D_
<input type="checkbox" checked><br>_x000D_
<input type="checkbox" disabled><br>_x000D_
<input type="checkbox" disabled checked><br>
_x000D_
Corrected the Fiddle - updated shows the Image duplicated into the Canvas...
And right click can be saved as a .PNG
<div style="text-align:center">
<img src="http://imgon.net/di-M7Z9.jpg" id="picture" style="display:none;" />
<br />
<div id="for_jcrop">here the image should apear</div>
<canvas id="rotate" style="border:5px double black; margin-top:5px; "></canvas>
</div>
Plus the JS on the fiddle page...
Cheers Si
Currently looking at saving this to File on the server --- ASP.net C# (.aspx web form page) Any advice would be cool....
I did the following experiment at home:
let's compare how 2 computers compile the same android application in eclipse. Here are the competitors:
"the monster" - pentinum i7 - 16 gig RAM - solid state hard drive
"peabody" - pentinum i3 - 4 gig RAM
The results: when I compiled the same application in eclipse, the monster and peabody took exactly the same amount of time to bring up the emulator to the point where you have to slide the button to run the app: 1 minute 12 seconds.
After that point, the monster executed the app 30-40 seconds faster than peabody.
The monster costs about $500 more than the peabody. So the question is, is it really worth it? In my opinion, No. I can wait the extra 30-40 seconds
If you want to avoid the verbosity of if(){} else if{}
, you may consider switching this single file to kotlin and use the switch-like when expression in combination with is
operator.
In any case Kotlin and java files can co-exist in a project.
when (this) { //switch-like statement in kotlin supporting class-pattern-matching and smart casts via `is` operator.
is A -> doA()
is B -> doB()
is C -> doC()
}
jQuery Validation Unobtrusive Native is a collection of ASP.Net MVC HTML helper extensions. These make use of jQuery Validation's native support for validation driven by HTML 5 data attributes. Microsoft shipped jquery.validate.unobtrusive.js back with MVC 3. It provided a way to apply data model validations to the client side using a combination of jQuery Validation and HTML 5 data attributes (that's the "unobtrusive" part).
You are dropping it, then creating it, then trying to create it again by using SELECT INTO
. Change to:
DROP TABLE #TMPGUARDIAN
CREATE TABLE #TMPGUARDIAN(
LAST_NAME NVARCHAR(30),
FRST_NAME NVARCHAR(30))
INSERT INTO #TMPGUARDIAN
SELECT LAST_NAME,FRST_NAME
FROM TBL_PEOPLE
In MS SQL Server you can create a table without a CREATE TABLE
statement by using SELECT INTO
USE update_attribute instead of update_attributes
Updates a single attribute and saves the record without going through the normal validation procedure.
if a.update_attribute('state', a.state)
Note:- 'update_attribute' update only one attribute at a time from the code given in question i think it will work for you.
Just try this line:
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
after:
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
If you're using Python 3
then you must install as follows:
sudo apt-get update
sudo apt-get install python3-tk
Tkinter for Python 2
(python-tk
) is different from Python 3
's (python3-tk
).
If the Proxy is which you trust, you can try: (Assume the Proxy IP is 151.101.2.10
)
<?php
$trustProxyIPs = ['151.101.2.10'];
$clientIP = isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : NULL;
if (in_array($clientIP, $trustProxyIPs)) {
$headers = ['HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR'];
foreach ($headers as $key => $header) {
if (isset($_SERVER[$header]) && filter_var($_SERVER[$header], FILTER_VALIDATE_IP)) {
$clientIP = $_SERVER[$header];
break;
}
}
}
echo $clientIP;
This will prevent forged forward header by direct requested clients, and get real IP via trusted Proxies.
I use testproxy to do this.
npm install testproxy
testproxy http://10.0.2.2
You then get the url (and QR code) you can access on your mobile device. It even works with virtual machines you can't reach by just entering the IP of your dev machine.
both your conditions are the same:
if(s < f) { calc = f - s; n = s; }else if(f > s){ calc = s - f; n = f; }
so
if(s < f)
and
}else if(f > s){
are the same
change to
}else if(f < s){
The Developers Survey from Stack Overflow is a good source of information for you to start this research.
2017: https://insights.stackoverflow.com/survey/2017#most-popular-technologies
2016: https://insights.stackoverflow.com/survey/2016#technology-most-popular-technologies
Why the Hell Would You Use Node.js
https://medium.com/the-node-js-collection/why-the-hell-would-you-use-node-js-4b053b94ab8e
Where Node.js really shines is in building fast, scalable network applications, as it’s capable of handling a huge number of simultaneous connections with high throughput, which equates to high scalability. How it works under-the-hood is pretty interesting. Compared to traditional web-serving techniques where each connection (request) spawns a new thread, taking up system RAM and eventually maxing-out at the amount of RAM available, Node.js operates on a single-thread, using non-blocking I/O calls, allowing it to support tens of thousands of concurrent connections (held in the event loop).
with express it's so easy. all what you need is to use the consolidate module on node so you need to install it :
npm install consolidate --save
then you should change the default engine to html template by this:
app.set('view engine', 'html');
register the underscore template engine for the html extension:
app.engine('html', require('consolidate').underscore);
it's done !
Now for load for example an template called 'index.html':
res.render('index', { title : 'my first page'});
maybe you will need to install the underscore module.
npm install underscore --save
I hope this helped you!
I think you can safely say a for loop is faster.
I do admit that a regexp looks cleaner in terms of code. If it's a real bottleneck then use a for loop, otherwise stick with the regular expression for reasons of "elegance"
If you want to go for simplicity then just use
function isVowel(c) {
return ['a', 'e', 'i', 'o', 'u'].indexOf(c.toLowerCase()) !== -1
}
I don't think it can. When a service is "stopped", it gets totally unloaded.
Well, OK, there's always a way I suppose. For instance, you could create a detached process to stop the service, then restart it, then exit.
You should implement a Custom List View, such that you define a Layout once and draw it for every row in the list view.
You need a dict
:
my_dict = {'cheese': 'cake'}
Example code (from the docs):
>>> a = dict(one=1, two=2, three=3)
>>> b = {'one': 1, 'two': 2, 'three': 3}
>>> c = dict(zip(['one', 'two', 'three'], [1, 2, 3]))
>>> d = dict([('two', 2), ('one', 1), ('three', 3)])
>>> e = dict({'three': 3, 'one': 1, 'two': 2})
>>> a == b == c == d == e
True
You can read more about dictionaries here.
char largeSrt[] = "123456789-123"; // original string
char * substr;
substr = strchr(largeSrt, '-'); // we save the new string "-123"
int substringLength = strlen(largeSrt) - strlen(substr); // 13-4=9 (bigger string size) - (new string size)
char *newStr = malloc(sizeof(char) * substringLength + 1);// keep memory free to new string
strcpy(newStr, largeSrt, substringLength); // copy only 9 characters
newStr[substringLength] = '\0'; // close the new string with final character
printf("newStr=%s\n", newStr);
free(newStr); // you free the memory
Don't do this!
Stay away from putting the events inline with the elements! If you don't, you're missing the point of JQuery (or one of the biggest ones at least).
The reason why it's easy to define click() handlers one way and not the other is that the other way is simply not desirable. Since you're just learning JQuery, stick to the convention. Now is not the time in your learning curve for JQuery to decide that everyone else is doing it wrong and you have a better way!
The solution is mentioned here: iPhone WebKit CSS animations cause flicker.
For your element, you need to set
-webkit-backface-visibility: hidden;
I agree that the annotations "don't propagate very far". However, I see the mistake on the programmer's side.
I understand the Nonnull
annotation as documentation. The following method expresses that is requires (as a precondition) a non-null argument x
.
public void directPathToA(@Nonnull Integer x){
x.toString(); // do stuff to x
}
The following code snippet then contains a bug. The method calls directPathToA()
without enforcing that y
is non-null (that is, it does not guarantee the precondition of the called method). One possibility is to add a Nonnull
annotation as well to indirectPathToA()
(propagating the precondition). Possibility two is to check for the nullity of y
in indirectPathToA()
and avoid the call to directPathToA()
when y
is null.
public void indirectPathToA(Integer y){
directPathToA(y);
}
call me old fashion but why use a 3rd party library for a simple protocol. I've implemented POP3 readers in web based ASP.NET application with System.Net.Sockets.TCPClient and System.Net.Security.SslStream for the encryption and authentication. As far as protocols go, once you open up communication with the POP3 server, there are only a handful of commands that you have to deal with. It is a very easy protocol to work with.
Thanks all, I had the same issue. I have a task that runs via a generic user account not linked to a particular person. This user as somehow logged off the VM, when I was trying to fix it I was logged in as me and not that user.
Logging back in with that user fixed the issue!
range()
in Python 2.x
This function is essentially the old range()
function that was available in Python 2.x
and returns an instance of a list
object that contains the elements in the specified range.
However, this implementation is too inefficient when it comes to initialise a list with a range of numbers. For example, for i in range(1000000)
would be a very expensive command to execute, both in terms of memory and time usage as it requires the storage of this list into the memory.
range()
in Python 3.x
and xrange()
in Python 2.x
Python 3.x
introduced a newer implementation of range()
(while the newer implementation was already available in Python 2.x
through the xrange()
function).
The range()
exploits a strategy known as lazy evaluation. Instead of creating a huge list of elements in range, the newer implementation introduces the class range
, a lightweight object that represents the required elements in the given range, without storing them explicitly in memory (this might sound like generators but the concept of lazy evaluation is different).
As an example, consider the following:
# Python 2.x
>>> a = range(10)
>>> type(a)
<type 'list'>
>>> b = xrange(10)
>>> type(b)
<type 'xrange'>
and
# Python 3.x
>>> a = range(10)
>>> type(a)
<class 'range'>
Try this from the box you are pushing from
ssh [email protected]
You should then get a welcome response from github and will be fine to then push.
Add a column to the left so that B10 to B20 is your named range Age.
Set A10 to A20 so that A10 = 1, A11= 2,... A20 = 11 and give the range A10 to A20 a name e.g. AgeIndex
.
The 5th element can be then found by using an array formula:
=sum( Age * (1 * (AgeIndex = 5) )
As it's an array formula you'll need to press Ctrl + Shift + Return to make it work and not just return. Doing that, the formula will be turned into an array formula:
{=sum( Age * (1 * (AgeIndex = 5) )}
I have this git log
alias in ~/.gitconfig
to view the graph history:
[alias]
l = log --all --graph --pretty=format:'%C(auto)%h%C(auto)%d %s %C(dim white)(%aN, %ar)'
With this in place, git l
will output something like:
In Git 2.12+ you can even customize the line colors of the graph using the log.graphColors
configuration option.
As for the logs' format, it's similar to --oneline
, with the addition of the author name (respecting .mailmap
) and the relative author date. Note that the %C(auto)
syntax, which tells Git to use the default colors for commit hash, etc. is supported in Git >= 1.8.3.
Use this code in your style tag
<style>
html {
background: url(imagename) no-repeat center center fixed;
background-size: cover;
height: 100%;
overflow: hidden;
}
</style>
\begingroup
\fontsize{10pt}{12pt}\selectfont
\begin{verbatim}
% how to set font size here to 10 px ?
\end{verbatim}
\endgroup
If you can't just limit the query itself with a where
clause, you can use the fact that the count
aggregate only counts the non-null values:
select count(case Position when 'Manager' then 1 else null end)
from ...
You can also use the sum
aggregate in a similar way:
select sum(case Position when 'Manager' then 1 else 0 end)
from ...
$(document).ready(function() {
$('select#select_2').change(function() {
var selectedText = $(this).find('option:selected').text();
alert(selectedText);
});
});
If you have a relatively- (or otherwise-) positioned div you can center something inside it with margin:auto
Vertical centering is a bit tricker, but possible.
echo $_SERVER["DOCUMENT_ROOT"];
'DOCUMENT_ROOT' The document root directory under which the current script is executing, as defined in the server's configuration file.
JLS Standard
JLS 7 15.17.2. Division Operator / says:
Integer division rounds toward 0. That is, the quotient produced for operands n and d that are integers after binary numeric promotion (§5.6.2) is an integer value q whose magnitude is as large as possible while satisfying |d · q| = |n|. Moreover, q is positive when |n| = |d| and n and d have the same sign, but q is negative when |n| = |d| and n and d have opposite signs.
This is why 1/2
does not give a float.
Converting just either one to float as in (float)1/2
suffices because 15.17. Multiplicative Operators says:
Binary numeric promotion is performed on the operands
and 5.6.2. Binary Numeric Promotion says:
- If either operand is of type double, the other is converted to double.
- Otherwise, if either operand is of type float, the other is converted to float
exit
in the C language takes an integer representing an exit status.
Typically, an exit status of 0 is considered a success, or an intentional exit caused by the program's successful execution.
An exit status of 1 is considered a failure, and most commonly means that the program had to exit for some reason, and was not able to successfully complete everything in the normal program flow.
Here's a GNU Resource talking about Exit Status.
As @Als has stated, two constants should be used in place of 0 and 1.
EXIT_SUCCESS
is defined by the standard to be zero.
EXIT_FAILURE
is not restricted by the standard to be one, but many systems do implement it as one.
Thank you OP for your question, and Roman for your answer. I had to search a bit to find this; I hope the following helps others.
Python 2.7
See: https://docs.scipy.org/doc/numpy/user/basics.io.genfromtxt.html
import numpy as np
from StringIO import StringIO
data = "1, abc , 2\n 3, xxx, 4"
print type(data)
"""
<type 'str'>
"""
print '\n', np.genfromtxt(StringIO(data), delimiter=",", dtype="|S3", autostrip=True)
"""
[['1' 'abc' '2']
['3' 'xxx' '4']]
"""
print '\n', type(data)
"""
<type 'str'>
"""
print '\n', np.genfromtxt(StringIO(data), delimiter=",", autostrip=True)
"""
[[ 1. nan 2.]
[ 3. nan 4.]]
"""
Python 3.5:
import numpy as np
from io import StringIO
import io
data = "1, abc , 2\n 3, xxx, 4"
#print(data)
"""
1, abc , 2
3, xxx, 4
"""
#print(type(data))
"""
<class 'str'>
"""
#np.genfromtxt(StringIO(data), delimiter=",", autostrip=True)
# TypeError: Can't convert 'bytes' object to str implicitly
print('\n')
print(np.genfromtxt(io.BytesIO(data.encode()), delimiter=",", dtype="|S3", autostrip=True))
"""
[[b'1' b'abc' b'2']
[b'3' b'xxx' b'4']]
"""
print('\n')
print(np.genfromtxt(io.BytesIO(data.encode()), delimiter=",", autostrip=True))
"""
[[ 1. nan 2.]
[ 3. nan 4.]]
"""
Aside:
dtype="|Sx", where x = any of { 1, 2, 3, ...}:
dtypes. Difference between S1 and S2 in Python
"The |S1 and |S2 strings are data type descriptors; the first means the array holds strings of length 1, the second of length 2. ..."
What about using something that is already implemented in Core?
//Clean non UTF-8 characters
Mage::getHelper('core/string')->cleanString($str)
Or one of the core url/ url rewrite methods..
It is possible using position:fixed
on <th>
(<th>
being the top row).
from rsync manual (man rsync
)
--mkpath create the destination's path component
A simple semantic name would be last
. This would allow code always positive code like:
if (item.last)
...
do {
...
} until (item.last);
import os, sys, re, glob
pattern = re.compile(r"\<\[\d\>")
replacementStringMatchesPattern = "<[1>"
for infile in glob.glob(os.path.join(os.getcwd(), '*.txt')):
for line in reader:
retline = pattern.sub(replacementStringMatchesPattern, "", line)
sys.stdout.write(retline)
print (retline)
It happened to me today with /home/user/public_html/index.php and the solution was to do chmod o+x /home/user
as this directory has to have the X as otherwise the apache server can't list files (i.e. do ls
)
function insert(&$arr, $value, $index){
$lengh = count($arr);
if($index<0||$index>$lengh)
return;
for($i=$lengh; $i>$index; $i--){
$arr[$i] = $arr[$i-1];
}
$arr[$index] = $value;
}
git checkout master
git pull
should do the job.
You will get the "Your branch is behind" message every time when you work on a branch different than master, someone does changes to master and you git pull.
(branch) $ //hack hack hack, while someone push the changes to origin/master
(branch) $ git pull
now the origin/master reference is pulled, but your master is not merged with it
(branch) $ git checkout master
(master) $
now master is behind origin/master and can be fast forwarded
this will pull and merge (so merge also newer commits to origin/master)
(master) $ git pull
this will just merge what you have already pulled
(master) $ git merge origin/master
now your master and origin/master are in sync
For some databases, you can just explicitly insert a NULL
into the auto_increment
column:
INSERT INTO table_name VALUES (NULL, 'my name', 'my group')
Or you may do the following
$(this).animate({color:'black'},1000);
But you need to download the color plugin from here.
The following works for me in Firefox and Internet Explorer:
<object id="mediaplayer" classid="clsid:22d6f312-b0f6-11d0-94ab-0080c74c7e95" codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#version=5,1,52,701" standby="loading microsoft windows media player components..." type="application/x-oleobject" width="320" height="310">
<param name="filename" value="./test.wmv">
<param name="animationatstart" value="true">
<param name="transparentatstart" value="true">
<param name="autostart" value="true">
<param name="showcontrols" value="true">
<param name="ShowStatusBar" value="true">
<param name="windowlessvideo" value="true">
<embed src="./test.wmv" autostart="true" showcontrols="true" showstatusbar="1" bgcolor="white" width="320" height="310">
</object>
According to this SO thread, the solution is to use the non-primitive wrapper types; e.g., Integer
instead of int
.
Struggled with the same problem for some time. But after creating the directory structure src/main/java and putting the source(from the top of the package), it worked as expected.
The tutorial I tried with. After you execute gradle build
, you will have to be able to find classes
under build
directory.
This is what the standard has to say about operator==
21.4.8.2 operator==
template<class charT, class traits, class Allocator> bool operator==(const basic_string<charT,traits,Allocator>& lhs, const basic_string<charT,traits,Allocator>& rhs) noexcept;
Returns: lhs.compare(rhs) == 0.
Seems like there isn't much of a difference!
If you're using Anaconda to manage Python on your system, you can install it with:
$ conda install pyqt=4
Omit the =4
to install the most current version.
Answer from How to install PyQt4 in anaconda?
FWIW, the equivalent package for RHEL/Fedora/CentOS/etc and SuSE/OpenSuSE appears to be called 'rubygems'.
Here is a link that will help answer your questions. In short:
count(*) is the correct way to write it and count(1) is OPTIMIZED TO BE count(*) internally -- since
a) count the rows where 1 is not null is less efficient than
b) count the rows
CGSize expectedLabelSize = [yourString sizeWithFont:yourLabel.font
constrainedToSize:maximumLabelSize
lineBreakMode:yourLabel.lineBreakMode];
What is -[NSString sizeWithFont:forWidth:lineBreakMode:] good for?
this question might have your answer, it worked for me.
For 2014, I edited in this new version, based on the ultra-handy comment by Norbert below! This does everything. Cheers
// yourLabel is your UILabel.
float widthIs =
[self.yourLabel.text
boundingRectWithSize:self.yourLabel.frame.size
options:NSStringDrawingUsesLineFragmentOrigin
attributes:@{ NSFontAttributeName:self.yourLabel.font }
context:nil]
.size.width;
NSLog(@"the width of yourLabel is %f", widthIs);
To style the Toolbar on Android 21+ it's a bit different.
<style name="DarkTheme.v21" parent="DarkTheme.v19">
<!-- toolbar background color -->
<item name="android:navigationBarColor">@color/color_primary_blue_dark</item>
<!-- toolbar back button color -->
<item name="toolbarNavigationButtonStyle">@style/Toolbar.Button.Navigation.Tinted</item>
</style>
<style name="Toolbar.Button.Navigation.Tinted" parent="Widget.AppCompat.Toolbar.Button.Navigation">
<item name="tint">@color/color_white</item>
</style>
Neither, because both are quite verbose for a very simple task. You can just do:
let result = ({
1: 'One',
2: 'Two',
3: 'Three'
})[opt] ?? 'Default' // opt can be 1, 2, 3 or anything (default)
This, of course, also works with strings, a mix of both or without a default case:
let result = ({
'first': 'One',
'second': 'Two',
3: 'Three'
})[opt] // opt can be 'first', 'second' or 3
It works by creating an object where the options/cases are the keys and the results are the values. By putting the option into the brackets you access the value of the key that matches the expression via the bracket notation.
This returns undefined
if the expression inside the brackets is not a valid key. We can detect this undefined-case by using the nullish coalescing operator ??
and return a default value.
console.log('Using a valid case:', ({
1: 'One',
2: 'Two',
3: 'Three'
})[1] ?? 'Default')
console.log('Using an invalid case/defaulting:', ({
1: 'One',
2: 'Two',
3: 'Three'
})[7] ?? 'Default')
_x000D_
.as-console-wrapper {max-height: 100% !important;top: 0;}
_x000D_
Your local branch likely has modifications to it you want to discard. To do this, you'll need to use git reset
to reset the branch head to the last spot that you diverged from the upstream repo's branch. Use git branch -v
to find the sha1 id of the upstream branch, and reset your branch it it using git reset SHA1ID
. Then you should be able to do a git checkout
to discard the changes it left in your directory.
Note: always do this on a backed-up repo. That way you can assure you're self it worked right. Or if it didn't, you have a backup to revert to.
$("form").submit(function(event) {_x000D_
_x000D_
var firstfield_value = event.currentTarget[0].value;_x000D_
_x000D_
var secondfield_value = event.currentTarget[1].value; _x000D_
_x000D_
alert(firstfield_value);_x000D_
alert(secondfield_value);_x000D_
event.preventDefault(); _x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<form action="" method="post" >_x000D_
<input type="text" name="field1" value="value1">_x000D_
<input type="text" name="field2" value="value2">_x000D_
</form>
_x000D_
In config/app.php file make a instance of env variable like 'name' => env('APP_NAME', 'Laravel')
& In your controller call it like config('app.name')
Run following commands php artisan config:cache
php artisan cache:clear
if it is not working.
Also, it can be done dynamically like so...
<input [id]="input.id" [type]="input.type" [autofocus]="input.autofocus" />
Where input is
const input = {
id: "my-input",
type: "text",
autofocus: true
};
To extrapolate on Felix Kling's comment, you can use .filter()
like this:
var sources = images.map(function (img) {
if(img.src.split('.').pop() === "json") { // if extension is .json
return null; // skip
} else {
return img.src;
}
}).filter(Boolean);
That will remove falsey values from the array that is returned by .map()
You could simplify it further like this:
var sources = images.map(function (img) {
if(img.src.split('.').pop() !== "json") { // if extension is .json
return img.src;
}
}).filter(Boolean);
Or even as a one-liner using an arrow function, object destructuring and the &&
operator:
var sources = images.map(({ src }) => src.split('.').pop() !== "json" && src).filter(Boolean);
In my experience over the past few months, I've realized that the best way to achieve this is:
class App extends React.Component{
constructor(){
super();
this.state = {
serverResponse: ''
}
}
componentDidMount(){
this.getData();
}
async getData(){
const res = await axios.get('url-to-get-the-data');
const { data } = await res;
this.setState({serverResponse: data})
}
render(){
return(
<div>
{this.state.serverResponse}
</div>
);
}
}
If you are trying to make post request on events such as click, then call getData()
function on the event and replace the content of it like so:
async getData(username, password){
const res = await axios.post('url-to-post-the-data', {
username,
password
});
...
}
Furthermore, if you are making any request when the component is about to load then simply replace async getData()
with async componentDidMount()
and change the render function like so:
render(){
return (
<div>{this.state.serverResponse}</div>
)
}
Try this:
/^stop.*$/
Explanation:
If you would like to enforce that stop be followed by a whitespace, you could modify the RegEx like so:
/^stop\s+.*$/
Note: Also keep in mind that the RegEx above requires that the stop word be followed by a space! So it wouldn't match a line that only contains: stop
The answer is due to the fact that Google Chrome uses an SQLite file to save cookies. It resides under:
C:\Users\<your_username>\AppData\Local\Google\Chrome\User Data\Default\
inside Cookies
file. (which is an SQLite database file)
So it's not a file stored on hard drive but a row in an SQLite database file which can be read by a third party program such as: SQLite Database Browser
EDIT: Thanks to @Chexpir, it is also good to know that the values are stored encrypted.
No idea what you mean with default Python. I consider it bad practice to replace the system Python interpreter with a different version. System functionality may depend in some way on the system Python and specific modules or a specific Python version. Instead install your custom Python installations in a safe different place and adjust your $PATH as needed in order to call you Python through a path lookup instead of looking for the default Python.
Bootstrap 4.x answer
hidden-*
classes are removed from Bootstrap 4 beta onward.
If you want to show on medium and up use the d-*
classes, e.g.:
<div class="d-none d-md-block">This will show in medium and up</div>
If you want to show only in small and below use this:
<div class="d-block d-md-none"> This will show only in below medium form factors</div>
Screen size and class chart
| Screen Size | Class |
|--------------------|--------------------------------|
| Hidden on all | .d-none |
| Hidden only on xs | .d-none .d-sm-block |
| Hidden only on sm | .d-sm-none .d-md-block |
| Hidden only on md | .d-md-none .d-lg-block |
| Hidden only on lg | .d-lg-none .d-xl-block |
| Hidden only on xl | .d-xl-none |
| Visible on all | .d-block |
| Visible only on xs | .d-block .d-sm-none |
| Visible only on sm | .d-none .d-sm-block .d-md-none |
| Visible only on md | .d-none .d-md-block .d-lg-none |
| Visible only on lg | .d-none .d-lg-block .d-xl-none |
| Visible only on xl | .d-none .d-xl-block |
Rather than using explicit
.visible-*
classes, you make an element visible by simply not hiding it at that screen size. You can combine one.d-*-none
class with one.d-*-block
class to show an element only on a given interval of screen sizes (e.g..d-none.d-md-block.d-xl-none
shows the element only on medium and large devices).
for my use case, i wanted to grab the SHA1 hash from the magisk config file. the below worked for me.
adb shell "su -c "cat /sbin/.magisk/config | grep SHA | awk -F= '{ print $2 }'""
std::pair<int, int> divide(int dividend, int divisor)
{
// :
return std::make_pair(quotient, remainder);
}
std::pair<int, int> answer = divide(5,2);
// answer.first == quotient
// answer.second == remainder
std::pair is essentially your struct solution, but already defined for you, and ready to adapt to any two data types.
In the default constructor (and any non-default ones if you have any too of course):
public foo() {
Bar = "bar";
}
This is no less performant that your original code I believe, since this is what happens behind the scenes anyway.
Java enums are not like C or C++ enums, which are really just labels for integers.
Java enums are implemented more like classes - and they can even have multiple attributes.
public enum Ids {
OPEN(100), CLOSE(200);
private final int id;
Ids(int id) { this.id = id; }
public int getValue() { return id; }
}
The big difference is that they are type-safe which means you don't have to worry about assigning a COLOR enum to a SIZE variable.
See http://docs.oracle.com/javase/tutorial/java/javaOO/enum.html for more.
Or just use this in your View(Razor page)
@item.ResgistrationhaseDate.ToString(string.Format("dd/MM/yyyy"))
I recommend that don't add date format in your model class
Summarizing, there are a few ways to do that.
1) Killing the process, which skip the finalization, error handling etc.:
Process.GetCurrentProcess().Kill();
2) Shutting down current application, which is probably the proper way because it calls the exit events:
Application.Current.Shutdown();
or
this.Shutdown();
(when clled in an instance of App-class)
3) Closing current app (all forms have to be closed/finished earlier):
this.Close();
(when clled in an instance of App-class)
4) Exiting the environment, which terminates the app:
Environment.Exit(0);
Also, You may want to read about exit statusses here
If you are using BookId as an combined primary key, then remember to change your interface from:
public interface QueuedBookRepo extends JpaRepository<QueuedBook, Long> {
to:
public interface QueuedBookRepo extends JpaRepository<QueuedBook, BookId> {
And change the annotation @Embedded to @EmbeddedId, in your QueuedBook class like this:
public class QueuedBook implements Serializable {
@EmbeddedId
@NotNull
private BookId bookId;
...
using (SqlConnection connection = new SqlConnection("Data Source=localhost;Initial Catalog=LoginScreen;Integrated Security=True"))
{
SqlCommand command =
new SqlCommand("select * from Pending_Tasks WHERE CustomerId=...", connection);
connection.Open();
SqlDataReader read= command.ExecuteReader();
while (read.Read())
{
CustID.Text = (read["Customer_ID"].ToString());
CustName.Text = (read["Customer_Name"].ToString());
Add1.Text = (read["Address_1"].ToString());
Add2.Text = (read["Address_2"].ToString());
PostBox.Text = (read["Postcode"].ToString());
PassBox.Text = (read["Password"].ToString());
DatBox.Text = (read["Data_Important"].ToString());
LanNumb.Text = (read["Landline"].ToString());
MobNumber.Text = (read["Mobile"].ToString());
FaultRep.Text = (read["Fault_Report"].ToString());
}
read.Close();
}
Make sure you have data in the query : select * from Pending_Tasks and you are using "using System.Data.SqlClient;"
Got hit by the same issue while accessing SQLServer from IIS. Adding TrustServerCertificate=True didnot help.
Could see a comment in MS docs: Make sure the SQLServer service account has access to the TLS Certificate you are using. (NT Service\MSSQLSERVER)
Open personal store and right click on the certificate -> manage private keys -> Add the SQL service account and give full control.
Restart the SQL service. It worked.
C99 does, if you have
#include <stdbool.h>
If the compiler does not support C99, you can define it yourself:
// file : myboolean.h
#ifndef MYBOOLEAN_H
#define MYBOOLEAN_H
#define false 0
#define true 1
typedef int bool; // or #define bool int
#endif
(but note that this definition changes ABI for bool
type so linking against external libraries which were compiled with properly defined bool
may cause hard-to-diagnose runtime errors).
There is a way simpler way. You put the href in a paragraph just created for that href. For example:
HREF name
you can use len(arr)
as suggested in previous answers to get the length of the array. In case you want the dimensions of a 2D array you could use arr.shape
returns height and width
It appears that the full example can be solved without the use of any kind of Pair structure. The key is to filter on the column indexes, with the predicate checking the entire column, instead of mapping the column indexes to the number of false
entries in that column.
The code that does this is here:
System.out.println(
IntStream.range(0, acyclic_graph.length)
.filter(i -> IntStream.range(0, acyclic_graph.length)
.noneMatch(j -> acyclic_graph[j][i]))
.boxed()
.collect(toList()));
This results in output of [0, 2, 4]
which is I think the correct result requested by the OP.
Also note the boxed()
operation that boxes the int
values into Integer
objects. This enables one to use the pre-existing toList()
collector instead having to write out collector functions that do the boxing themselves.
You were close:
IF EXISTS (SELECT * FROM Table WHERE FieldValue='')
SELECT TableID FROM Table WHERE FieldValue=''
ELSE
BEGIN
INSERT INTO TABLE (FieldValue) VALUES ('')
SELECT TableID FROM Table WHERE TableID=SCOPE_IDENTITY()
END
This method nicely does it all in one go.
from glob import glob
subd = [s.rstrip("/") for s in glob(parent_dir+"*/")]
As you’re in the context of HTML, you need to use HTML to represent that character. And for HTML you need to use a numeric character reference '
('
hexadecimal):
<input type='text' id='abc' value='hel'lo'>
override func viewDidLoad() {
super.viewDidLoad()
tableView.tableFooterView = UIView() // it's just 1 line, awesome!
}
git diff 15dc8 15dce~1
~1 means 'parent', ~2 'grandparent, etc.
If you tried all the other answers in this question and you:
...you may have separate versions of the NuGet packages DLL in your projects' References, as the reference created by Intellisense/ReSharper will be a "normal" reference, and not a NuGet reference as expected, so the NuGet update process won't find or update it!
To fix this, remove the reference in Project A, then use NuGet to install it, and make sure the NuGet packages in all projects are the same version. (as explain in this answer)
This issue can come up whenever ReSharper/Intellisense suggests to add a reference to your project. It can be much more deeply convoluted than the example above, with multiple interweaving projects and dependencies making it hard to track down. If the reference being suggested by ReSharper/Intellisense is actually from a NuGet package, use NuGet to install it.
Decimal 128 bit (28-29 significant digits) In case of financial applications it is better to use Decimal types because it gives you a high level of accuracy and easy to avoid rounding errors Use decimal for non-integer math where precision is needed (e.g. money and currency)
Double 64 bit (15-16 digits) Double Types are probably the most normally used data type for real values, except handling money. Use double for non-integer math where the most precise answer isn't necessary.
Float 32 bit (7 digits) It is used mostly in graphic libraries because very high demands for processing powers, also used situations that can endure rounding errors.
Decimals
are much slower than a double/float
.
Decimals
and Floats/Doubles
cannot be compared without a cast whereas Floats
and Doubles
can.
Decimals
also allow the encoding or trailing zeros.
You should add the target="_blank"
and rel="noopener noreferrer"
in the anchor tag.
For example:
<a target="_blank" rel="noopener noreferrer" href="http://your_url_here.html">Link</a>
Adding rel="noopener noreferrer"
is not mandatory, but it's a recommended security measure. More information can be found in the links below.
Source:
=INDIRECT("'C:\Data["&A8&"]SheetNAME'!$G9")
where A8 contains myExcelFile.xlsm
and G9 contains your source workbook precious data.
If you want a real timer you need to use the date object.
Calculate the difference.
Format your string.
window.onload=function(){
var start=Date.now(),r=document.getElementById('r');
(function f(){
var diff=Date.now()-start,ns=(((3e5-diff)/1e3)>>0),m=(ns/60)>>0,s=ns-m*60;
r.textContent="Registration closes in "+m+':'+((''+s).length>1?'':'0')+s;
if(diff>3e5){
start=Date.now()
}
setTimeout(f,1e3);
})();
}
Example
not so precise timer
var time=5*60,r=document.getElementById('r'),tmp=time;
setInterval(function(){
var c=tmp--,m=(c/60)>>0,s=(c-m*60)+'';
r.textContent='Registration closes in '+m+':'+(s.length>1?'':'0')+s
tmp!=0||(tmp=time);
},1000);
OK, Firefox 7 implemented text-overflow: ellipsis
as well as text-overflow: "string"
. Final release is planned for 2011-09-27.
Left click on a method and press the F12 key to Go To Definition. Other Actions also available
Mostly this is caused with an issue in your React/Client app. Adding this line to your client package.json
solves it
"proxy": "http://localhost:5000/"
Note: Replace 5000, with the port number where your server is running
Reference: How to get create-react-app to work with a Node.js back-end API
I found this page when I was trying to set the backgroundImage
attribute of a div, but hadn't wrapped the backgroundImage
value with url()
. This worked fine:
for (var i=0; i<20; i++) {
// add a wrapper around an image element
var wrapper = document.createElement('div');
wrapper.className = 'image-cell';
// add the image element
var img = document.createElement('div');
img.className = 'image';
img.style.backgroundImage = 'url(http://via.placeholder.com/350x150)';
// add the image to its container; add both to the body
wrapper.appendChild(img);
document.body.appendChild(wrapper);
}
codeigniter needs to load the url helper to call the base_url()
function.
use application->config->autoload.php
edit autoload helper array and add url helper..
base_url()
function is working now..
ActiveXObject
is non-standard and only supported by Internet Explorer on Windows.
There is no native cross browser way to write to the file system without using plugins, even the draft File API gives read only access.
If you want to work cross platform, then you need to look at such things as signed Java applets (keeping in mind that that will only work on platforms for which the Java runtime is available).
You need to have access as well on the site that you will be iframing. i found the best solution here: https://gist.github.com/MateuszFlisikowski/91ff99551dcd90971377
yourotherdomain.html
<script type='text/javascript' src="js/jquery.min.js"></script>
<script type='text/javascript'>
// Size the parent iFrame
function iframeResize() {
var height = $('body').outerHeight(); // IMPORTANT: If body's height is set to 100% with CSS this will not work.
parent.postMessage("resize::"+height,"*");
}
$(document).ready(function() {
// Resize iframe
setInterval(iframeResize, 1000);
});
</script>
your website with iframe
<iframe src='example.html' id='edh-iframe'></iframe>
<script type='text/javascript'>
// Listen for messages sent from the iFrame
var eventMethod = window.addEventListener ? "addEventListener" : "attachEvent";
var eventer = window[eventMethod];
var messageEvent = eventMethod == "attachEvent" ? "onmessage" : "message";
eventer(messageEvent,function(e) {
// If the message is a resize frame request
if (e.data.indexOf('resize::') != -1) {
var height = e.data.replace('resize::', '');
document.getElementById('edh-iframe').style.height = height+'px';
}
} ,false);
</script>
You have also a very good testing frameworks to create such a stub. One of my preferrable is Mockito There is also EasyMock and others... But Mockito is great you should read it - very elegant and powerfull package
This is very simple and straight forward to server the static content from outside webapps folder in tomcat.
Simply edit the server.xml under $CATALINA_HOME/config/server.xml as below and restart the tomcat.
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
**<Context docBase="C:\Ankur\testFiles" path="/companyLogo" />**
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log" suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>
Add the context element inside the host element with two attribute docBase and path.
1) docBase: represents the hard drive directory 2) path: represents the uri on which you want to serve the static content.
For example:If you have 7.png inside the C:\Ankur\testFiles directory then you can access the 7.png file like below:
http://localhost:8081/companyLogo/7.png
For more details, check the blog
I tried
Document.getElementsByClassName('option0')
Which resulted in the error: Uncaught TypeError: Document.getElementsByClass is not a function
After that I tried:
document.getElementsByClassName('option0')
And it works!
I also ran into this problem, but the solution that seems to be a common thread here, and I saw elsewhere on the web, is "[re]install the redistributable package". However, for me that does not work, as the problem arose when running the installer for our product (which installs the redistributable package) to test our shiny new Visual Studio 2015 builds.
The issue came up because the DLL files listed are not located in the Visual Studio install path (for example, C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\redist) and thus had not been added to the install. These api-ms-win-* dlls get installed to a Windows 10 SDK install path as part of the Visual Studio 2015 install (e.g. C:\Program Files (x86)\Windows Kits\10\Redist).
Installing on Windows 10 worked fine, but installing on Windows 7 required adding these DLL files to our product install. For more information, see Update for Universal C Runtime in Windows which describes the addition of these dependencies caused by Visual Studio 2015 and provides downloads for various Windows platforms; also see Introducing the Universal CRT which describes the redesign of the CRT libraries. Of particular interest is item 6 under the section titled Distributing Software that uses the Universal CRT:
Updated September 11, 2015: App-local deployment of the Universal CRT is supported. To obtain the binaries for app-local deployment, install the Windows Software Development Kit (SDK) for Windows 10. The binaries will be installed to C:\Program Files (x86)\Windows Kits\10\Redist\ucrt. You will need to copy all of the DLLs with your app (note that the set of DLL files are necessary is different on different versions of Windows, so you must include all of the DLL files in order for your program to run on all supported versions of Windows).
// Get calendar set to the current date and time
Calendar cal = Calendar.getInstance();
// Set time of calendar to 18:00
cal.set(Calendar.HOUR_OF_DAY, 18);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
// Check if current time is after 18:00 today
boolean afterSix = Calendar.getInstance().after(cal);
if (afterSix) {
System.out.println("Go home, it's after 6 PM!");
}
else {
System.out.println("Hello!");
}
Not sure why what you have doesn't work, but you can add
overflow: auto;
to the outer div.
workbook.Close(0);
excelApp.Quit();
Worked for me.
Have you tried to define a custom background in xml? decreasing the Spinner background width which is doing your arrow look like that.
Define a layer-list with a rectangle background and your custom arrow icon:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="@color/color_white" />
<corners android:radius="2.5dp" />
</shape>
</item>
<item android:right="64dp">
<bitmap android:gravity="right|center_vertical"
android:src="@drawable/custom_spinner_icon">
</bitmap>
</item>
</layer-list>
Use getApplicationContext() if you need something tied to a Context that itself will have global scope.
If you use Activity, then the new Activity instance will have a reference, which has an implicit reference to the old Activity, and the old Activity cannot be garbage collected.
The onclick
attribute in HTML calls JavaScript functions, not PHP functions.
So this is long after the initial question, and technically it isn't a direct answer to how to use Ajax call to populate exterior variable as the question asks. However in research and responses it's been found to be extremely difficult to do this without disabling asynchronous functions within the call, or by descending into what seems like the potential for callback hell. My solution for this has been to use Axios. Using this has dramatically simplified my usages of asynchronous calls getting in the way of getting at data.
For example if I were trying to access session variables in PHP, like the User ID, via a call from JS this might be a problem. Doing something like this..
async function getSession() {
'use strict';
const getSession = await axios("http:" + url + "auth/" + "getSession");
log(getSession.data);//test
return getSession.data;
}
Which calls a PHP function that looks like this.
public function getSession() {
$session = new SessionController();
$session->Session();
$sessionObj = new \stdClass();
$sessionObj->user_id = $_SESSION["user_id"];
echo json_encode($sessionObj);
}
To invoke this using Axios do something like this.
getSession().then(function (res) {
log(res);//test
anyVariable = res;
anyFunction(res);//set any variable or populate another function waiting for the data
});
The result would be, in this case a Json object from PHP.
{"user_id":"1111111-1111-1111-1111-111111111111"}
Which you can either use in a function directly in the response section of the Axios call or set a variable or invoke another function.
Proper syntax for the Axios call would actually look like this.
getSession().then(function (res) {
log(res);//test
anyVariable = res;
anyFunction(res);//set any variable or populate another function waiting for the data
}).catch(function (error) {
console.log(error);
});
For proper error handling.
I hope this helps anyone having these issues. And yes I am aware this technically is not a direct answer to the question but given the answers supplied already I felt the need to provide this alternative solution which dramatically simplified my code on the client and server sides.
Lightsail VPSs are bundles of existing AWS products, offered through a significantly simplified interface. The difference is that Lightsail offers you a limited and fixed menu of options but with much greater ease of use. Other than the narrower scope of Lightsail in order to meet the requirements for simplicity and low cost, the underlying technology is the same.
The pre-defined bundles can be described:
% aws lightsail --region us-east-1 get-bundles
{
"bundles": [
{
"name": "Nano",
"power": 300,
"price": 5.0,
"ramSizeInGb": 0.5,
"diskSizeInGb": 20,
"transferPerMonthInGb": 1000,
"cpuCount": 1,
"instanceType": "t2.nano",
"isActive": true,
"bundleId": "nano_1_0"
},
...
]
}
It's worth reading through the Amazon EC2 T2 Instances documentation, particularly the CPU Credits section which describes the base and burst performance characteristics of the underlying instances.
Importantly, since your Lightsail instances run in VPC, you still have access to the full spectrum of AWS services, e.g. S3, RDS, and so on, as you would from any EC2 instance.
Double-quoted strings are more elegant because you don't have to break up your string every time you need to insert a variable (like you must do with single-quoted strings).
However, if you need to insert the return value of a function, this cannot be inserted into a double-quoted string--even if you surround it with braces!
//syntax error!!
//$s = "Hello {trim($world)}!"
//the only option
$s = "Hello " . trim($world) . "!";
For errors like this you should involve oracle support. Unfortunately you do not mention what oracle release you are using. The error can be related to optimizer bind peeking. Depending on the oracle version different workarounds apply.
You have two ways to address this:
_optim_peek_user_binds = false
Of course underscore parameters should only be set if advised by oracle support
For IE 6, you'll want to equal colspan to the number of columns in your table. If you have 5 columns, then you'll want: colspan="5"
.
The reason is that IE handles colspans differently, it uses the HTML 3.2 specification:
IE implements the HTML 3.2 definition, it sets
colspan=0
ascolspan=1
.
The bug is well documented.
Java 8
public static void main(String[] args) throws IOException {
Path start = Paths.get("C:\\data\\");
try (Stream<Path> stream = Files.walk(start, Integer.MAX_VALUE)) {
List<String> collect = stream
.map(String::valueOf)
.sorted()
.collect(Collectors.toList());
collect.forEach(System.out::println);
}
}
I found this blog post very helpful, Its using loopJ to download file, it has only one Simple function, will be helpful to some new android guys.
You can create a much cleaner implementation with Moment.js Durations. No manual parsing necessary.
var time = moment.duration("00:03:15");_x000D_
var date = moment("2014-06-07 09:22:06");_x000D_
date.subtract(time);_x000D_
$('#MomentRocks').text(date.format())
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>_x000D_
<script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.8.4/moment.js"></script>_x000D_
<span id="MomentRocks"></span>
_x000D_
You need to use Arrow function ()=>
ES6 feature to preserve this
context within setTimeout
.
// var that = this; // no need of this line
this.messageSuccess = true;
setTimeout(()=>{ //<<<---using ()=> syntax
this.messageSuccess = false;
}, 3000);
Update 2019-10:
As stated in the issue tracker, Google has been working on a new SDK tools release that runs on current JVMs (9+)!
You can download and use the new Android SDK Command-line Tools (1.0.0) inside Android Studio or by manually downloading them from the Google servers:
For the latest versions check the URLs inside the repository.xml.
If you manually unpack the command line tools, take care of placing them in a subfolder inside your $ANDROID_HOME
(e.g. $ANDROID_HOME/cmdline-tools/...
).
The closest PowerShell construct I've been able to come up with to emulate that is:
@({'condition is false'},{'condition is true'})[$condition]
Please make sure two things:
1- Use @Bean
annotation with the method.
@Bean
public RestTemplate restTemplate(RestTemplateBuilder builder){
return builder.build();
}
2- Scope of this method should be public not private.
Complete Example -
@Service
public class MakeHttpsCallImpl implements MakeHttpsCall {
@Autowired
private RestTemplate restTemplate;
@Override
public String makeHttpsCall() {
return restTemplate.getForObject("https://localhost:8085/onewayssl/v1/test",String.class);
}
@Bean
public RestTemplate restTemplate(RestTemplateBuilder builder){
return builder.build();
}
}
yes
and no
, where no
is the default value.standalone="yes"
means that the XML processor must use the DTD for validation only. In that case it will not be used for:
standalone="yes"
may add validity constraints if the document uses an external DTD. When the document contains things that would require modification of the XML, such as default values for attributes, and standalone="yes"
is used then the document is invalid.standalone="yes"
may help to optimize performance of document processing.Source: The standalone pseudo-attribute is only relevant if a DTD is used
If your threads are performing any kind of resource-intensive work (CPU/Disk) then you'll rarely see benefits beyond one or two, and too many will kill performance very quickly.
The 'best-case' is that your later threads will stall while the first ones complete, or some will have low-overhead blocks on resources with low contention. Worst-case is that you start thrashing the cache/disk/network and your overall throughput drops through the floor.
A good solution is to place requests in a pool that are then dispatched to worker threads from a thread-pool (and yes, avoiding continuous thread creation/destruction is a great first step).
The number of active threads in this pool can then be tweaked and scaled based on the findings of your profiling, the hardware you are running on, and other things that may be occurring on the machine.
For compiling the java file having dependency on a jar
javac -cp path_of_the_jar/jarName.jar className.java
For executing the class file
java -cp .;path_of_the_jar/jarName.jar className
I had the same problem for different package. I was installing pyinstaller
in conda on Mac Mojave. I did
conda create --name ai37 python=3.7
conda activate ai37
I got the mentioned error when I tried to install pyinstaller using
pip install pyinstaller
I was able to install the pyinstaller with the following command
conda install -c conda-forge pyinstaller
I changed the permission of my .ssh/id_rsa (private key) to 604. chmod 700 id_rsa
my solution: first step like most other answer:
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python2.7 get-pip.py --force-reinstall
second, add soft link
sudo ln -s /usr/local/bin/pip /usr/bin/pip