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Is there a math nCr function in python? [duplicate]
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edited Jun 8 at 9:58
L3viathan
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Very Long If Statement in Python [duplicate]
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edited Jul 13 '18 at 8:04
Thiago Figueiro
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ModelSerializer using model property
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edited Aug 6 '19 at 9:12
Stefano Munarini
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How can I check if a string represents an int, without using try/except?
...t work with '16.0' format, which is similar to int casting in this sense.
edit:
def check_int(s):
if s[0] in ('-', '+'):
return s[1:].isdigit()
return s.isdigit()
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STL中map容器使用自定义key类型报错详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...定义一个结构体来试试：[cpp]view plaincopystructa{char*pName;intm_a;} 引言
STL的map容器中，key的类型是不是随意的呢？
实践
编写测试代码
定义一个结构体来试试：
struct a
{
char* pName;
int m_a;
};
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map<a, int> mp;
a ...
How to reshape data from long to wide format
...so does this simply, with gather()/spread() being the terms for melt/cast.
Edit: Now, in 2019, tidyr v 1.0 has launched and set spread and gather on a deprecation path, preferring instead pivot_wider and pivot_longer, which you can find described in this answer. Read on if you want a brief glimpse i...
Navigation bar appear over the views with new iOS7 SDK
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edited Sep 30 '13 at 12:09
answered Aug 7 '13 at 12:44
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How to send a command to all panes in tmux?
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edited Apr 27 '17 at 5:40
answered Dec 3 '15 at 18:47
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Foreign Key naming scheme
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edited Oct 14 '08 at 0:32
answered Oct 14 '08 at 0:21
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What is the command to list the available avdnames
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edited May 8 '18 at 9:02
Günter Zöchbauer
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