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Inverse dictionary lookup in Python
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python has a .index method on lists the returns the first found index with the specified value or an exception if not found... any reason why such a semantic could not be applied to dictionaries?
– Brian Jack
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Is it possible to use 'else' in a list comprehension? [duplicate]
...r a in [0,1,0,3]]
[2, 1, 2, 3]
So for your example,
table = ''.join(chr(index) if index in ords_to_keep else replace_with
for index in xrange(15))
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How to check if a line is blank using regex
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this should be the best answer.
– Q i
Jul 22 '19 at 23:46
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binning data in python with scipy/numpy
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The numpy_indexed package (disclaimer: I am its author) contains functionality to efficiently perform operations of this type:
import numpy_indexed as npi
print(npi.group_by(np.digitize(data, bins)).mean(data))
This is essentially t...
ERROR 2006 (HY000): MySQL server has gone away
...ation/options, and I wasn't willing to go down a programmatic solution via PHP or other.
– Richard Sitze
Dec 16 '12 at 21:15
160
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How can I force clients to refresh JavaScript files?
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This uses PHP tags and if one uses PHP, it is indeed a good idea.
– Jerther
Apr 19 '17 at 12:31
3
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Get Selected index of UITableView
I want to have selected index for UITableView .
I have written following code:
5 Answers
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What are the differences between a multidimensional array and an array of arrays in C#?
... array var jagged = new int[10][5] works like this: Look up the element at index 3 (which is an array) and look up the element at index 6 in that array (which is a value). For each dimension in this case, there's an additional look up (this is an expensive memory access pattern).
A multidimensional ...
int a[] = {1,2,}; Weird comma allowed. Any particular reason?
...r a = [1, 2,];, so do most other languages I know... ActionScript, Python, PHP.
– Sean Fujiwara
Aug 14 '11 at 3:43
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Finding the index of elements based on a condition using python list comprehension
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In Python, you wouldn't use indexes for this at all, but just deal with the values—[value for value in a if value > 2]. Usually dealing with indexes means you're not doing something the best way.
If you do need an API similar to Matlab's, you would...