大约有 41,300 项符合查询结果（耗时：0.0559秒） [XML]
Default value of 'boolean' and 'Boolean' in Java
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edited Jan 6 '15 at 22:39
Stephan
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answered Ju...
Find TODO tags in Eclipse
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355
Is there an easy way to view all methods which contain this comment? Some sort of menu opti...
Interpolating a string into a regex
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answered Sep 29 '08 at 18:53
Jonathan LonowskiJonathan Lonowski
108k3131 gold badges188188 silver badges191191 bronze badges
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Loop through all nested dictionary values?
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edited Mar 11 at 5:34
Antti Haapala
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How to unzip a list of tuples into individual lists? [duplicate]
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Use zip(*list):
>>> l = [(1,2), (3,4), (8,9)]
>>> list(zip(*l))
[(1, 3, 8), (2, 4, 9)]
The zip() function pairs up the elements from all inputs, starting with the first values, then the second, etc. By using *l you apply all tuples in l as separat...
Unique combination of all elements from two (or more) vectors
... expand.grid(a,b)
Var1 Var2
1 ABC 2012-05-01
2 DEF 2012-05-01
3 GHI 2012-05-01
4 ABC 2012-05-02
5 DEF 2012-05-02
6 GHI 2012-05-02
7 ABC 2012-05-03
8 DEF 2012-05-03
9 GHI 2012-05-03
10 ABC 2012-05-04
11 DEF 2012-05-04
12 GHI 2012-05-04
13 ABC 2012-05-05
14 DEF 2012-05-...
Convert two lists into a dictionary
...ke this:
>>> keys = ['a', 'b', 'c']
>>> values = [1, 2, 3]
>>> dictionary = dict(zip(keys, values))
>>> print(dictionary)
{'a': 1, 'b': 2, 'c': 3}
Voila :-) The pairwise dict constructor and zip function are awesomely useful: https://docs.python.org/3/library/...
How to convert a NumPy array to PIL image applying matplotlib colormap
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3 Answers
3
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warning: implicit declaration of function
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236
You are using a function for which the compiler has not seen a declaration ("prototype") yet.
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Convert a matrix to a 1 dimensional array
I have a matrix (32X48).
10 Answers
10
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