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How to implement a unique index on two columns in rails
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Dorian
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answered Nov 8 '10 at 12:45
shingarashingara...
What is the difference between origin and upstream on GitHub?
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VonCVonC
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Find row where values for column is maximal in a pandas DataFrame
...B','C'])
>>> df
A B C
0 1.232853 -1.979459 -0.573626
1 0.140767 0.394940 1.068890
2 0.742023 1.343977 -0.579745
3 2.125299 -0.649328 -0.211692
4 -0.187253 1.908618 -1.862934
>>> df['A'].argmax()
3
>>> df['B'].argmax()
4
>>> df['C'...
CSS Input Type Selectors - Possible to have an “or” or “not” syntax?
... :not()s together:
input:not([type='checkbox']):not([type='submit'])
CSS4, which is not yet widely supported, allows multiple selectors in a :not()
input:not([type='checkbox'],[type='submit'])
Legacy support
All modern browsers support the CSS3 syntax. At the time this question was asked, ...
JQuery to load Javascript file dynamically
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edited Oct 8 '12 at 14:49
Dreen
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answered ...
how to create a file name with the current date & time in python?
...str = time.strftime("%Y%m%d-%H%M%S")
print timestr
yields:
20120515-155045
so your filename could append or use this string.
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npm command to uninstall or prune unused packages in Node.js
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Note: Recent npm versions do this automatically when package-locks are enabled, so this is not n...
In Python, how do you convert seconds since epoch to a `datetime` object?
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