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What is the fastest integer division supporting division by zero no matter what the result is?
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107
Inspired by some of the comments I got rid of the branch on my Pentium and gcc compiler using
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Calculating Pearson correlation and significance in Python
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16 Answers
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How do I get PHP errors to display?
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This always works for me:
ini_set('display_errors', '1');
ini_set('display_startup_errors', '1');
error_reporting(E_ALL);
However, this doesn't make PHP to show parse errors - the only way to show those errors is to modify your php.ini with this line:
display_errors = on
(...
What is the difference between an int and a long in C++?
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112
It is implementation dependent.
For example, under Windows they are the same, but for examp...
Python memoising/deferred lookup property decorator
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For all sorts of great utilities I'm using boltons.
As part of that library you have cachedpro...
Selecting with complex criteria from pandas.DataFrame
...; from random import randint
>>> df = pd.DataFrame({'A': [randint(1, 9) for x in range(10)],
'B': [randint(1, 9)*10 for x in range(10)],
'C': [randint(1, 9)*100 for x in range(10)]})
>>> df
A B C
0 9 40 300
1 9 70 700
2 5 70 90...
Generating all permutations of a given string
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Getting multiple keys of specified value of a generic Dictionary?
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15 Answers
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Python: Select subset from list based on index set
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126
You could just use list comprehension:
property_asel = [val for is_good, val in zip(good_obje...