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How to set selected value of jquery select2?

... Html: <select id="lang" > <option value="php">php</option> <option value="asp">asp</option> <option value="java">java</option> </select> JavaScript: $("#lang").select2().select2('val','asp'); jsfiddle ...
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How to auto-remove trailing whitespace in Eclipse?

...pecific preference that gets stored into your SCM along with the code. In order to do that right-click on your project and go to Properties -> Java Editor -> Save Actions. From there you can enable project specific settings and configure it to remove trailing whitespace (among other useful t...
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ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...系统得到默认的调试输出很容易,但是这些输出对于定位问题尤其是bugs没有太大作用。 本文旨在告诉读者如何生成有用的调试信息,通过这些信息可以直接判断出操作系统的运行状态。 几种调试方法 调试ros的方法有很多,...
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Sharing a URL with a query string on Twitter

...tion shareOnFB(){ var url = "https://www.facebook.com/sharer/sharer.php?u=https://yoururl.com&t=your message"; window.open(url, '', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=300,width=600'); return false; } function shareOntwitter(){ var url = 'https...
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开源邮件传输代理软件 -- Postfix 介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术

...。还有一种情况时,如果postfix在处理邮件过程中遇到了问题,则该值会开始降低。 当接收到的新邮件的数量超过postfix的投递能力时,postfix会暂时停止投递deferred队列中的邮件而去处理新接收到的邮件。这是因为处理新邮件的...
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Relative URL to a different port number in a hyperlink?

...9 (replace your port as required) <div> <a href="http://<?php print $_SERVER{'SERVER_NAME'}; ?>:8069"><img src="images/example.png"/>Example Base (http)</a> </div> share ...
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How can I get `find` to ignore .svn directories?

...ng to the POSIX standard, the expressions are evaluated one by one, in the order specified. If the first expression in -a is false, the second expression will not be evaluated (also called short-circuit and evaluation). – Siu Ching Pong -Asuka Kenji- Apr 4 '10 ...
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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术

...问0x4的内存地址,不crash才怪。于是,你一定会有如下的问题: 1)为什么不是 13行if语句出错?f.a被初始化为空了嘛,用空指针访问成员变量为什么不crash? 2)为什么会访问到了0x4的地址?靠,4是怎么出来的? 3)代码中的...
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Javascript object Vs JSON

...? JSON is a data interchange format. It's a standard which describes how ordered lists and unordered maps, strings booleans and numbers can be represented in a string. Just like XML and YAML is a way to pass structured information between languages, JSON is the same. A JavaScript object on the oth...
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那些我印象深刻的建议和教诲 - 杂谈 - 清泛网 - 专注C/C++及内核技术

...弱点,真是人生的一大考验。有些人采取鸵鸟政策,假装问题不存在;有些人一看苗头不对就转移,避开心虚;还有些人打肿脸充胖子,掩盖心虚。总之,都是在躲,都是不健康的应对。 真正健康的方式是什么?是努力戒除情...