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Capturing Groups From a Grep RegEx
...ing examples and more, which may not be what you're looking for:
123_abc_d4e5
xyz123_abc_d4e5
123_abc_d4e5.xyz
xyz123_abc_d4e5.xyz
To eliminate the second and fourth examples, make your regex like this:
^[0-9]+_([a-z]+)_[0-9a-z]*
which says the string must start with one or more digits. The ca...
What is the difference between join and merge in Pandas?
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94
I always use join on indices:
import pandas as pd
left = pd.DataFrame({'key': ['foo', 'bar'], '...
Is there a performance difference between a for loop and a for-each loop?
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From Item 46 in Effective Java by Joshua Bloch :
The for-each loop, introduced in
release 1.5, gets rid of the clutter
and the opportunity for error by
hiding the iterator or index variable
completely. The resulting idiom
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node.js equivalent of python's if __name__ == '__main__' [duplicate]
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answered May 22 '11 at 19:43
Stephen EmslieStephen Emslie
8,17844 gold badges2626 silver badges2727 bronze badges
...
Timeout for python requests.get entire response
...let.monkey_patch()
with eventlet.Timeout(10):
requests.get("http://ipv4.download.thinkbroadband.com/1GB.zip", verify=False)
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Is it possible to import a whole directory in sass using @import?
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edited Nov 7 '16 at 5:40
answered May 15 '13 at 21:35
D...
Are list-comprehensions and functional functions faster than “for loops”?
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154
The following are rough guidelines and educated guesses based on experience. You should timeit o...
What's the difference between using CGFloat and float?
... introduced to make it easier to write code that works on both 32-bit and 64-bit without modification. However, if all you need is float precision within your own code, you can still use float if you like — it will reduce your memory footprint somewhat. Same goes for integer values.
I suggest yo...
Python time measure function
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242
First and foremost, I highly suggest using a profiler or atleast use timeit.
However if you wan...
What is the difference between quiet NaN and signaling NaN?
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answered Aug 8 '13 at 5:41
wrdieterwrdieter
1,9761515 silver badges1515 bronze badges
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