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Check if a JavaScript string is a URL
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Be aware that if you use a string as a parameter for the RegExp you have to double escape the backslashes - otherwise you get errors like invalid group.
– Kjell
Jun 5 '15 at 16:13
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What is the difference between a mutable and immutable string in C#?
...gh (obviously) the names of the types may differ, as may other details.
For the record:
String is the standard C# / .Net immutable string type
StringBuilder is the standard C# / .Net mutable string type
To "effect a change" on a string represented as a C# String, you actually create a new S...
MySQL, Check if a column exists in a table with SQL
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This works well for me.
SHOW COLUMNS FROM `table` LIKE 'fieldname';
With PHP it would be something like...
$result = mysql_query("SHOW COLUMNS FROM `table` LIKE 'fieldname'");
$exists = (mysql_num_rows($result))?TRUE:FALSE;
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PHP array_filter with arguments
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Good workaround. For the sake of maintainable code, it might help to modify the class to support more readable method calls as well: $matches = $myobj->ArraySelect( Array('from'=>$arr, 'where'=>$foo, 'lessthan'=>12 ) )
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How can I do an asc and desc sort using underscore.js?
I am currently using underscorejs for sort my json sorting. Now I have asked to do an ascending and descending sorting using underscore.js. I do not see anything regarding the same in the documentation. How can I achieve this?
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Python JSON serialize a Decimal object
...ich wouldn't work (see my comment below), so...
return (str(o) for o in [o])
return super(DecimalEncoder, self).default(o)
Then use it like so:
json.dumps({'x': decimal.Decimal('5.5')}, cls=DecimalEncoder)
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What is the combinatory logic equivalent of intuitionistic type theory?
...nators, thus making it point-free. I was wondering what the equivalent was for Agda. I.e., can one make a dependently typed functional programming language equivalent to Agda without using any variables?
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Pythonic way to combine FOR loop and IF statement
I know how to use both for loops and if statements on separate lines, such as:
10 Answers
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django change default runserver port
...nless it calls the shell using something like call. If this solution works for you please make sure to mark it as solved.
– Pablo Albornoz
May 13 '14 at 20:21
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Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [
...t on Oracle's website states that, while there was a fix, it was removed before the JDK was released. I do not know why the fix was removed, but it confirms what we've already suspected -- the JDK is still broken.
The bug report claims that the error is benign and should not cause any run-time prob...