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Fast way of counting non-zero bits in positive integer
...half again as much time).
On the other hand, gmpy popcount() took about 1/20th of the time of bin(n).count("1"). So if you can install gmpy, use that.
To answer a question in the comments, for bytes I'd use a lookup table. You can generate it at runtime:
counts = bytes(bin(x).count("1") for x in ...
Ruby: Calling class method from instance
... = year, make
end
end
Now let's use our class:
t = Truck.new("Honda", 2000)
t.make
# => "Honda"
t.year
# => "2000"
t = Truck.new
t.make
# => "Toyota"
t.year
# => nil
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impro...
Run an OLS regression with Pandas Data Frame
...ge which was one of pandas' optional dependencies before pandas' version 0.20.0 (it was used for a few things in pandas.stats.)
>>> import pandas as pd
>>> import statsmodels.formula.api as sm
>>> df = pd.DataFrame({"A": [10,20,30,40,50], "B": [20, 30, 10, 40, 50], "C": [...
How do I redirect with JavaScript? [duplicate]
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answered Jan 20 '11 at 9:52
seedgseedg
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How to list all the files in a commit?
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20
If you want it to work on the root commit, use the --root flag. From the man page: "When --root is specified the initial commit will be sh...
How to print a number with commas as thousands separators in JavaScript
...t would be the solution.
– Vlad
Jan 20 '15 at 16:13
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How can I change the version of npm using nvm?
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answered Nov 6 '15 at 20:46
lawrencelawrence
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How do I know which version of Javascript I'm using?
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edited Mar 16 '14 at 20:06
rink.attendant.6
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Moment JS - check if a date is today or in the future
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204
After reading the documentation: http://momentjs.com/docs/#/displaying/difference/, you have t...