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Why is string concatenation faster than array join?
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149
Browser string optimizations have changed the string concatenation picture.
Firefox was...
Split string every nth character?
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574
>>> line = '1234567890'
>>> n = 2
>>> [line[i:i+n] for i in range(0, ...
Is String.Contains() faster than String.IndexOf()?
...ndNLSString from kernel32.dll (the power of reflector!).
Updated for .NET 4.0 - IndexOf no longer uses Ordinal Comparison and so Contains can be faster. See comment below.
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Where can I set environment variables that crontab will use?
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How to drop a list of rows from Pandas dataframe?
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401
Use DataFrame.drop and pass it a Series of index labels:
In [65]: df
Out[65]:
one tw...
Best way to format integer as string with leading zeros? [duplicate]
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647
You can use the zfill() method to pad a string with zeros:
In [3]: str(1).zfill(2)
Out[3]: '01...
Site does not exist error for a2ensite
... Jul 26 '19 at 7:26
Traveler_3994
3588 bronze badges
answered Dec 15 '13 at 6:54
devodevo
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Convert datetime object to a String of date only in Python
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gizzmole
84999 silver badges2020 bronze badges
answered May 16 '12 at 19:01
LevonLevon
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Purpose of memory alignment
...ve a memory with a memory word of length of 1 byte. Why can't you access a 4 byte long variable in a single memory access on an unaligned address(i.e. not divisible by 4), as it's the case with aligned addresses?
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Is there a way to 'uniq' by column?
...:58:29.793000000,xx3.net,255.255.255.0
stack2@domain.com,2009-11-27 01:05:47.893000000,xx2.net,127.0.0.1
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