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How much faster is C++ than C#?
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Martin ProbstMartin Probst
8,64355 gold badges2828 silver badges3333 bronze badges
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Sending files using POST with HttpURLConnection
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64
To upload file on server with some parameter using MultipartUtility in simple way.
MultipartUt...
Can I mask an input text in a bat file?
...ctiveX component can't create object: 'ScriptPW.Password'. Windows 7 Beta x64 here.
– Joey
Mar 20 '09 at 9:14
Interest...
How do I give text or an image a transparent background using CSS?
...cannot add to this conversation at this time.
– user664833
Feb 27 '14 at 19:41
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How can I declare and use Boolean variables in a shell script?
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64
Use arithmetic expressions.
#!/bin/bash
false=0
true=1
((false)) && echo false
((tru...
What's the difference between :: (double colon) and -> (arrow) in PHP?
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casablancacasablanca
64.3k55 gold badges121121 silver badges142142 bronze badges
a...
How do malloc() and free() work?
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64
Soooo many people don't realise that free() may not return memory to the OS, it's infuriating. Thanks for helping enlighten them.
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What does O(log n) mean exactly?
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648
O(log N) basically means time goes up linearly while the n goes up exponentially. So if it tak...
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
...def _UTILITY_STDEV_H_
#define _UTILITY_STDEV_H_
/*
* 计算统计特征的函数
*/
#define _USE_MATH_DEFINES
#include <algorithm>
#include <math.h>
#include <float.h>
#include <crtdbg.h>
#include <vector>
struct StdevInfo
{
static const double MAX_VAR;
double _ave;
//doub...
How to get current CPU and RAM usage in Python?
...x, Windows, OSX, Sun Solaris, FreeBSD, OpenBSD and NetBSD, both 32-bit and 64-bit architectures, with Python versions from 2.6 to 3.5 (users of Python 2.4 and 2.5 may use 2.1.3 version).
Some examples:
#!/usr/bin/env python
import psutil
# gives a single float value
psutil.cpu_percent()
# gives an...