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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...
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();
}
}
...
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...
Python code to remove HTML tags from a string [duplicate]
...o contain entities, that are not enclosed in brackets such as '&nsbm'. If that is the case then you might want to write the regex as
cleanr = re.compile('<.*?>|&([a-z0-9]+|#[0-9]{1,6}|#x[0-9a-f]{1,6});')
This link contains more details on this.
Using BeautifulSoup
You could also u...
How to reset a timer in C#?
...he
amount of time to delay before the
invoking the callback method specified
when the Timer was constructed, in
milliseconds. Specify
Timeout.Infinite to prevent the
timer from restarting. Specify zero
(0) to restart the timer immediately.
...
How do you check what version of SQL Server for a database using TSQL?
...on') AS nvarchar)
SET @ver = SUBSTRING(@ver, 1, CHARINDEX('.', @ver) - 1)
IF ( @ver = '7' )
SELECT 'SQL Server 7'
ELSE IF ( @ver = '8' )
SELECT 'SQL Server 2000'
ELSE IF ( @ver = '9' )
SELECT 'SQL Server 2005'
ELSE IF ( @ver = '10' )
SELECT 'SQL Server 2008/2008 R2'
ELSE IF ( @ver = '11...
Find value in an array
...
I'm guessing that you're trying to find if a certain value exists inside the array, and if that's the case, you can use Array#include?(value):
a = [1,2,3,4,5]
a.include?(3) # => true
a.include?(9) # => false
If you mean something else, check the Ruby A...
How to design a database for User Defined Fields?
...
If performance is the primary concern, I would go with #6... a table per UDF (really, this is a variant of #2). This answer is specifically tailored to this situation and the description of the data distribution and access pa...