大约有 2,000 项符合查询结果(耗时:0.0238秒) [XML]

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STL 算法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...文件<algorithm>,<numeric>,<functional>组成。要使用 STL中的算法函数必须包含头文件<algorithm>,对于数值算法须包含<numeric>,<functional>中则定义了一些模板类,用来声明函数对象 注意: 编译器无法检测出所传递的迭代器是一个无效形式...
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Executing periodic actions in Python [duplicate]

...ur drift, not timer unreliability. The best way to reduce drift is to only sleep for as long as require until the next expected run time. I'll add an example as another answer. – Michael Anderson Aug 12 '13 at 5:12 ...
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Difference between wait and sleep

What is difference between wait and sleep ? 3 Answers 3 ...
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How can one use multi threading in PHP applications

... } public function run() { if ($this-&gt;arg) { $sleep = mt_rand(1, 10); printf('%s: %s -start -sleeps %d' . "\n", date("g:i:sa"), $this-&gt;arg, $sleep); sleep($sleep); printf('%s: %s -finish' . "\n", date("g:i:sa"), $this-&gt;arg); ...
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__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术

...被初学者所知)就是__attribute__机制。__attribute__可以设置函数属性(Function Attribute)、变量属性(Variabl GNU C的一大特色(却不被初学者所知)就是__attribute__机制。__attribute__可以设置函数属性(Function Attribute)、变量属性(V...
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C++虚析构函数解析 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++虚析构函数解析为什么基类的析构函数是虚函数?在实现多态时,当用基类操作派生类,在析构时防止只析构基类而不析构派生类的状况发生。以下内容转自:http...为什么基类的析构函数是虚函数? 在实现多态时,当用基类...
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How to profile a bash shell script slow startup?

...ere is a quick demo/test to show how it work: for i in {1..4};do echo now;sleep .05;done| date -f - +%N Sample script: #!/bin/bash exec 3&gt;&amp;2 2&gt; &gt;( tee /tmp/sample-$$.log | sed -u 's/^.*$/now/' | date -f - +%s.%N &gt;/tmp/sample-$$.tim) set -x fo...
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Debug Error \"pure virtual function call\" 原因解析 - 更多技术 - 清泛...

... "pure virtual function call" 原因解析结论:一般在构造、析构函数中调用虚函数就可能出这个错误,检查纯虚函数,看看有没有在构造析构函数中调用。以下来自:http: www.kuqin.c...结论:一般在构造、析构函数中调用虚函数就可能出...
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C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

...一些list的实现,size耗费线性时间。 第5条:区间成员函数优先于与之对应的单元素成员函数。 区间成员函数写起来更容易,更能清楚地表达你的意图,而且它们表现出了更高的效率。 第6条:当心C++编译器最烦人的分...
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How to wait in a batch script? [duplicate]

...he ping command doesn't output anything to screen. You can easily make a sleep command yourself by creating a sleep.bat somewhere in your PATH and use the above technique: rem SLEEP.BAT - sleeps by the supplied number of seconds @ping 192.0.2.2 -n 1 -w %1000 &gt; nul NOTE: The 192.0.2.x addr...