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How do I detect what .NET Framework versions and service packs are installed?
A similar question was asked here , but it was specific to .NET 3.5. Specifically, I'm looking for the following:
13 Answe...
How do I format a string using a dictionary in python-3.x?
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23
Since the question is specific to Python 3, here's using the new f-string syntax, available sinc...
How to format numbers? [duplicate]
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MichaelMichael
5,15833 gold badges4949 silver badges6969 bronze badges
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How to return dictionary keys as a list in Python?
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answered May 29 '13 at 16:25
Chris Chris
11.8k11 gold badge1313 silver badges1616 bronze badges
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How to use string.replace() in python 3.x
The string.replace() is deprecated on python 3.x. What is the new way of doing this?
8 Answers
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Cost of len() function
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360
It's O(1) (constant time, not depending of actual length of the element - very fast) on every ...
How do I add PHP code/file to HTML(.html) files?
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answered Jul 3 '12 at 13:47
John CondeJohn Conde
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PHP append one array to another (not array_push or +)
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436
array_merge is the elegant way:
$a = array('a', 'b');
$b = array('c', 'd');
$merge = array_mer...
[] and {} vs list() and dict(), which is better?
...gt;> from timeit import timeit
>>> timeit("[]")
0.040084982867934334
>>> timeit("list()")
0.17704233359267718
>>> timeit("{}")
0.033620194745424214
>>> timeit("dict()")
0.1821558326547077
and for non-empty:
>>> timeit("[1,2,3]")
0.24316302770330367
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How to filter a dictionary according to an arbitrary condition function?
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434
Nowadays, in Python 2.7 and up, you can use a dict comprehension:
{k: v for k, v in points.ite...