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Count the number of occurrences of a character in a string in Javascript
...g")) || []).length); //logs 4
jsfiddle
Use a regular expression literal if you know what you are searching for beforehand, if not you can use the RegExp constructor, and pass in the g flag as an argument.
match returns null with no results thus the || []
The original answer I made in 2009 is be...
Use dynamic variable names in JavaScript
...a such called Variable- (or in case of a Function, Activation Object).
So if you create variables like this:
var a = 1,
b = 2,
c = 3;
In the Global scope (= NO function context), you implicitly write those variables into the Global object (= window in a browser).
Those can get accessed ...
How can I use UUIDs in SQLAlchemy?
...s there a way to define a column (primary key) as a UUID in SQLAlchemy if using PostgreSQL (Postgres)?
9 Answers
...
warning about too many open figures
...her plots.
plt.close() closes a window, which will be the current window, if not specified otherwise. plt.close('all') will close all open figures.
The reason that del fig does not work is that the pyplot state-machine keeps a reference to the figure around (as it must if it is going to know what ...
django urls without a trailing slash do not redirect
...
"When set to True, if the request URL does not match any of the patterns in the URLconf and it doesn’t end in a slash, an HTTP redirect is issued to the same URL with a slash appended. Note that the redirect may cause any data submitted in a ...
How to grab substring before a specified character jQuery or JavaScript
...
This will not work if the string being searched does not contain an instance of the search character. It will return an empty string.
– David G
Aug 20 '15 at 19:48
...
How to insert a character in a string at a certain position?
...tring.format is the best option available.
– NobleUplift
Jul 24 '13 at 16:06
33
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Disable back button in android
...
Override the onBackPressed method and do nothing if you meant to handle the back button on the device.
@Override
public void onBackPressed() {
if (shouldAllowBack()) {
super.onBackPressed();
} else {
doSomething();
}
}
...
Get encoding of a file in Windows
...ding of a text file? Sure I can write a little C# app but I wanted to know if there is something already built in?
12 Answe...
Where is the IIS Express configuration / metabase file found?
...\my documents\iisexpress\config\applicationhost.config
Update for VS2019
If you're using Visual Studio 2019+ check this path:
$(solutionDir)\.vs\{projectName}\config\applicationhost.config
Update for VS2015 (credit: @Talon)
If you're using Visual Studio 2015-2017 check this path:
$(soluti...