大约有 43,100 项符合查询结果（耗时：0.0456秒） [XML]
Useful code which uses reduce()? [closed]
...n Scheme a lot...
Here's some cute usages:
Flatten a list
Goal: turn [[1, 2, 3], [4, 5], [6, 7, 8]] into [1, 2, 3, 4, 5, 6, 7, 8].
reduce(list.__add__, [[1, 2, 3], [4, 5], [6, 7, 8]], [])
List of digits to a number
Goal: turn [1, 2, 3, 4, 5, 6, 7, 8] into 12345678.
Ugly, slow way:
int("".j...
How do I access command line arguments in Python?
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517
Python tutorial explains it:
import sys
print(sys.argv)
More specifically, if you run pytho...
What happens if I define a 0-size array in C/C++?
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An array cannot have zero size.
ISO 9899:2011 6.7.6.2:
If the expression is a constant expression, it shall have a value greater than zero.
The above text is true both for a plain array (paragraph 1). For a VLA (variable length array), the behavior is undefined ...
Storing R.drawable IDs in XML array
...le within your /res/values folder that looks like this:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<integer-array name="random_imgs">
<item>@drawable/car_01</item>
<item>@drawable/balloon_random_02</item>
<item>@dr...
Mercurial move changes to a new branch
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153
As suggested by Mark, the MqExtension is one solution for you problem. IMHO a simpler workflow...
Remove an item from a dictionary when its key is unknown
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10 Answers
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Android studio, gradle and NDK
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We have released a first version of the integration as a preview in 1.3: http://tools.android.com/tech-docs/android-ndk-preview
The integration will stay a preview even after 1.3 becomes final. No current ETA as to when it'll be final (as of 2015/07/10).
More information here: http://tools....
Python: using a recursive algorithm as a generator
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117
def getPermutations(string, prefix=""):
if len(string) == 1:
yield prefix + string...
Browser detection in JavaScript? [duplicate]
...|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
if(/trident/i.test(M[1])){
tem= /\brv[ :]+(\d+)/g.exec(ua) || [];
return 'IE '+(tem[1] || '');
}
if(M[1]=== 'Chrome'){
tem= ua.match(/\b(OPR|Edge?)\/(\d+)/);
if(tem!= null) return tem.slice(1).join(' ').re...
python pandas dataframe to dictionary
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12 Answers
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