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Regex lookahead, lookbehind and atomic groups
...inds the 1st bar ("bar" which has "bar" after it)
bar(?!bar) finds the 2nd bar ("bar" which does not have "bar" after it)
(?<=foo)bar finds the 1st bar ("bar" which has "foo" before it)
(?<!foo)bar finds the 2nd bar ("bar" which does not have "foo" before it)
You can also combine t...
How can I return pivot table output in MySQL?
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This basically is a pivot table.
A nice tutorial on how to achieve this can be found here: ht...
Why dict.get(key) instead of dict[key]?
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edited Apr 7 '17 at 7:22
Jean-François Corbett
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Calculate the median of a billion numbers
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What is the most efficient way to create HTML elements using jQuery?
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Notepad++ htmltidy - unable to find libtidy.dll
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edited Apr 6 '19 at 2:40
Peter Mortensen
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Use different Python version with virtualenv
I have a Debian system currently running with python 2.5.4. I got virtualenv properly installed, everything is working fine. Is there a possibility that I can use a virtualenv with a different version of Python?
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Deleting multiple elements from a list
... from a list at the same time? If I want to delete elements at index 0 and 2, and try something like del somelist[0] , followed by del somelist[2] , the second statement will actually delete somelist[3] .
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How to wait for 2 seconds?
...esn't explicitly lay out the required string format.
This will wait for 2 seconds:
WAITFOR DELAY '00:00:02';
The format is hh:mi:ss.mmm.
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