大约有 2,000 项符合查询结果(耗时:0.0103秒) [XML]

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How to listen for changes to a MongoDB collection?

...> true) loop do if doc = cursor.next_document puts doc else sleep 1 end end PHP $mongo = new Mongo(); $db = $mongo->selectDB('my_db') $coll = $db->selectCollection('my_collection'); $cursor = $coll->find()->tailable(true); while (true) { if ($cursor->hasNext())...
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常用C函数的Unicode兼容函数(持续更新) - C/C++ - 清泛网 - 专注C/C++及内核技术

常用C函数的Unicode兼容函数(持续更新)C 函数Unicode版本fprintf_ftprintfaccess_taccesssprintf_stprintfstrcat_tcscat(_tcscat_s)strcmpi 是stricmp的宏定义比较两个字符串... C 函数 Unicode版本 fprintf _ftprintf access _taccess s...
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调用空智能指针对象的函数,Windows及Linux行为解析 - C/C++ - 清泛网 - 专...

调用空智能指针对象的函数,Windows及Linux行为解析empty_shared_ptr_call先看结论:Windows下可以调用空智能指针对象的函数,但是函数中访问目标对象的成员变量会崩溃,this指针为nullptr;Linux下Debug版本及不开优化版本也能正常运行...
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Run certain code every n seconds [duplicate]

...o through whatever code I had, then once it had been 5 seconds (with time.sleep() ) it would execute that code. I would be using this to update a file though, not print Hello World. ...
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OS X Bash, 'watch' command

...basic functionality with the shell loop: while :; do clear; your_command; sleep 2; done That will loop forever, clear the screen, run your command, and wait two seconds - the basic watch your_command implementation. You can take this a step further and create a watch.sh script that can accept yo...
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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess

...y.com/blog/archives/010717.html : #!/bin/bash FAIL=0 echo "starting" ./sleeper 2 0 & ./sleeper 2 1 & ./sleeper 3 0 & ./sleeper 2 0 & for job in `jobs -p` do echo $job wait $job || let "FAIL+=1" done echo $FAIL if [ "$FAIL" == "0" ]; then echo "YAY!" else echo "FAIL! ($FAIL...
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MFC 中CImageList的用法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...确定取得返回值的图像列表的值,其取值与设置图像列表函数相同。 CImageList Cil1,Cil2; //定义大小图标像列表 CVCLISTApp *pApp=(CVCLISTApp *)AfxGetApp();//取得列表控制程序 Cil1.Create(32,32,TRUE,2,2);//建立32位图像控制 Cil1.Add(pApp->LoadIcon(IDI...
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VS2005中SetUnhandledExceptionFilter函数应用 - C/C++ - 清泛网 - 专注C/C++及内核技术

VS2005中SetUnhandledExceptionFilter函数应用很多软件通过设置自己的异常捕获函数,捕获未处理的异常,生成报告或者日志(例如生成mini-dump文件),达到Release版本下追踪Bug的目的。...很多软件通过设置自己的异常捕获函数,捕获未...
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VC/MFC 临界区域使用方法实例 - C/C++ - 清泛网 - 专注C/C++及内核技术

...义一个临界区域对象 *.cpp源文件使用方法: 在类的构造函数内初始化临界区域对象 //该函数必须在任何线程调用EnterCriticalSection函数之前被调用,否则结果将是很难预计的 ::InitializeCriticalSection(&m_cs_test); 在类的虚构函数内...
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C++构造函数中可不可以调用虚函数? - C/C++ - 清泛网 - 专注C/C++及内核技术

C++构造函数中可不可以调用虚函数?不可调用,没定义好,不知分配多少空间。不可调用,没定义好,不知分配多少空间。C++ 构造函数 虚函数