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Get path from open file in Python
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answered Mar 3 '12 at 1:09
TadeckTadeck
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How can I format a decimal to always show 2 decimal places?
...s Decimal('0.01')
>>> # Round to two places
>>> Decimal('3.214').quantize(TWOPLACES)
Decimal('3.21')
>>> # Validate that a number does not exceed two places
>>> Decimal('3.21').quantize(TWOPLACES, context=Context(traps=[Inexact]))
Decimal('3.21')
>>> Deci...
Is 1.0 a valid output from std::generate_canonical?
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3 Answers
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计算统计特征（正态分布）函数及实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
...算统计特征（正态分布）函数及实例main函数：#include "stdafx.h"#include "stdev.h"#include <map>int _tmain(int argc, _TCHAR* argv[]){std::map<int, int> map_...main函数：
#include "stdafx.h"
#include "stdev.h"
#include <map>
int _tmain(int argc, _TCHAR* argv[])
{
std::ma...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...lowed by a single Newton-Raphson step) that gives nearly full precision (~23 bits of accuracy, if I remember properly), and is still somewhat faster than sqrtss.
edit: If speed is critical, and you're really calling this in a loop for many values, you should be using the vectorized versions of thes...
What's the point of map in Haskell, when there is fmap?
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Getting the caller function name inside another function in Python? [duplicate]
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You can use the inspect module to get the info you want. Its stack method returns a list of fram...
Postfix日常维护队列管理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...oming：放置正在到达或队列管理进程尚未发现的邮件。
3． active：放置队列管理进程已经打开了并正准备投递的邮件，该队列有长度的限制。
4． deferred：放置不能被投递的邮件。
postfix日常维护
#启动postfix
postfix start
#...
Ruby on Rails: How do I add placeholder text to a f.text_field?
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With rails >= 3.0, you can simply use the placeholder option.
f.text_field :attr, placeholder: "placeholder text"
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What is the difference between a definition and a declaration?
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23 Answers
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