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Local Storage vs Cookies

I want to reduce load times on my websites by moving all cookies into local storage since they seem to have the same functionality. Are there any pros/cons (especially performance-wise) in using local storage to replace cookie functionality except for the obvious compatibility issues? ...
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How do I (or can I) SELECT DISTINCT on multiple columns?

...ata type of the column must support the <> operator. Some types like json don't. See: How to query a json column for empty objects? Subtle difference in NULL handling This query (unlike the currently accepted answer by Joel) does not treat NULL values as equal. The following two rows for ...
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How do I lock the orientation to portrait mode in a iPhone Web Application?

I'm building a iPhone Web Application and want to lock the orientation to portrait mode. is this possible? Are there any web-kit extensions to do this? ...
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Windows应用程序异常:异常代码: 0xc0000005 - C/C++ - 清泛网 - 专注C/C++及内核技术

...溃,没有留下任何痕迹,追踪困难。这时可以打开Windows应用程序日志,查看崩溃信息。操作方法,我电脑右键管理:错 有时应用程序异常崩溃,没有留下任何痕迹,追踪困难。这时可以打开Windows应用程序日志,查看崩...
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js页面跳转window.location.href很多浏览器不支持解决方法 - C/C++ - 清...

js页面跳转window.location.href很多浏览器不支持解决方法在js里用window.location.href("xxxxx");来实现页面直接跳转功能。如:window.location.href(" index.html");IE内核浏览器木有问题。火狐...在js里用window.location.href("xxxxx");来实现页面直...
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php array为空判断 - C/C++ - 清泛网 - 专注C/C++及内核技术

php array为空判断如何判断PHP数组是否为空PHP判断数组为空首选方法:count($arr),size($arr);$arr= array("");echo count($arr);echo size($arr); 输出1...如何判断PHP数组是否为空 PHP判断数组为空首选方法:count($arr), size($arr); $arr= array(""); ec...
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C++在堆上申请二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++在堆上申请二维数组假设要申请是double型大小m*n数组有如下方法方法一:优点:申请空间是连续 缺点:较难理解double (*d)[n] = new double[m][n]复...假设要申请是double型大小m*n数组 有如下方法 方法一:优点:申请空...
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csplitterwnd 窗口不能自适应解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

csplitterwnd 窗口不能自适应解决方法if (!m_wndSplitterH.CreateView(0, 0, RUNTIME_CLASS(CGraphFrame), sizeDummy, pContext)) { TRACE0("Failed to cr...if (!m_wndSplitterH.CreateView(0, 0, RUNTIME_CLASS(CGraphFrame), sizeDummy, pContext)) { TRACE0("Failed to ...
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MFC OnKeyDown没反应,不响应键盘操作 - C/C++ - 清泛网 - 专注C/C++及内核技术

MFC OnKeyDown没反应,不响应键盘操作在MFC中添加键盘消息响应,通常是通过OnKeyDown函数来完成消息捕捉和响应。afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, U...在MFC中添加键盘消息响应,通常是通过OnKeyDown函数来完成消息捕捉和...
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Linux常用命令(持续更新...) - C/C++ - 清泛网 - 专注C/C++及内核技术

...x常用命令(持续更新...)Linux启动、停止、查询系统服务命令:chkconfig --list #列出所有系统服务chkconfig --add xxx #增加xxx系统服...Linux启动、停止、查询系统服务命令: chkconfig --list #列出所有系统服务 c...