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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...zed operations.
%timeit df['A1'], df['A2'] = df['a'] ** 2, df['a'] ** 3
5.13 ms ± 320 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
This takes advantage of NumPy's extremely fast vectorized operations instead of our loops. We now have a 30x speedup over the original.
The simplest...
What Regex would capture everything from ' mark to the end of a line?
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GessGess
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How do I override __getattr__ in Python without breaking the default behavior?
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edited Apr 12 '13 at 14:24
Rod
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Generic Repository With EF 4.1 what is the point
...in both SL and WPF.
– h.alex
Feb 9 '13 at 21:35
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How to do a git diff on moved/renamed file?
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ZitraxZitrax
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What is the difference between a dialog being dismissed or canceled in Android?
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Why main does not return 0 here?
...compiler might do X"
– Owen
Nov 23 '13 at 2:09
@Owen: Quote the standard passage defining this.
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Find a commit on GitHub given the commit hash
...o/blob/…
– RubyTuesdayDONO
Mar 5 '13 at 16:56
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How do I pull my project from github?
... something wrong?
– CatShoes
Aug 9 '13 at 12:43
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.net implementation of bcrypt
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ineine
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