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range over interface{} which stores a slice
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answered Dec 24 '12 at 22:05
masebasemasebase
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Cost of len() function
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answered Jul 12 '09 at 4:40
Alex MartelliAlex Martelli
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Regex to remove all (non numeric OR period)
I need for text like "joe ($3,004.50)" to be filtered down to 3004.50 but am terrible at regex and can't find a suitable solution. So only numbers and periods should stay - everything else filtered. I use C# and VS.net 2008 framework 3.5
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How do you get the magnitude of a vector in Numpy?
...y -- say x.norm() -- but oh well).
import numpy as np
x = np.array([1,2,3,4,5])
np.linalg.norm(x)
You can also feed in an optional ord for the nth order norm you want. Say you wanted the 1-norm:
np.linalg.norm(x,ord=1)
And so on.
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How do you know when to use fold-left and when to use fold-right?
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Is generator.next() visible in Python 3?
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g.next() has been renamed to g.__next__(). The reason for this is consistency: special methods...
Python pandas Filtering out nan from a data selection of a column of strings
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Is there an R function for finding the index of an element in a vector?
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Preserving signatures of decorated functions
... """Computes x*y + 2*z"""
return x*y + 2*z
print funny_function("3", 4.0, z="5")
# 22
help(funny_function)
# Help on function funny_function in module __main__:
#
# funny_function(x, y, z=3)
# Computes x*y + 2*z
Python 3.4+
functools.wraps() from stdlib preserves signatures since Py...