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Check if an element is present in an array [duplicate]
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1044
ECMAScript 2016 incorporates an includes() method for arrays that specifically solves the pro...
What's the function like sum() but for multiplication? product()?
...ort operator
def prod(iterable):
return reduce(operator.mul, iterable, 1)
>>> prod(range(1, 5))
24
Note, in Python 3, the reduce() function was moved to the functools module.
Specific case: Factorials
As a side note, the primary motivating use case for prod() is to compute factorials....
How to normalize a NumPy array to within a certain range?
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140
audio /= np.max(np.abs(audio),axis=0)
image *= (255.0/image.max())
Using /= and *= allows yo...
Find index of last occurrence of a substring in a string
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answered Mar 5 '12 at 19:15
Rik PoggiRik Poggi
23.7k66 gold badges5858 silver badges7878 bronze badges
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How to get a substring of text?
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edited Aug 17 '12 at 10:25
answered May 31 '11 at 8:14
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Getting the last argument passed to a shell script
$1 is the first argument.
$@ is all of them.
27 Answers
27
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dyld: Library not loaded … Reason: Image not found
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31 Answers
31
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Comma separator for numbers in R?
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135
You can try either format or prettyNum, but both functions return a vector of characters. I'd ...
Rounding float in Ruby
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182
When displaying, you can use (for example)
>> '%.2f' % 2.3465
=> "2.35"
If you wan...