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微博为什么限制140字(附短信70字限制考) - 创意 - 清泛网 - 专注C/C++及内核技术

微博为什么限制140字(附短信70字限制考)问题的提出申请过那么多的微博,数申请网易微博的动机最不纯,因为它的字数限制不是传说中的140字,而是163个字。当年觉得很可爱,于是就注...问题的提出 申请过那么多的微博,数申...
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Debug Error \"pure virtual function call\" 原因解析 - 更多技术 - 清泛...

...函数中抛出异常,不然,我们不得不面对以下两个严重的问题: 二次异常导致程序退出; 遗留下来的未完全销毁的对象与未完成的工作导致的后续问题 pure virtual function call就是这种情况。 但是理想与现实总是有差距的,...
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What is a postback?

...age will be manipulated by the user (a button clicked or dropdown changed, etc), and this control will initiate a postback. The state of this control, plus all other controls on the page,(known as the View State) is Posted Back to the web server. What happens? Most commonly the postback causes the...
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What is the difference/usage of homebrew, macports or other package installation tools? [closed]

...local for Homebrew. Apple has left /usr/local for "executables, libraries, etc. not included by the basic operating system". That means it's possible that tools installed prior to using Homebrew may have created /usr/local such that it can't be modified without sudo. They don't discuss that at the w...
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How do I check if a directory exists? “is_dir”, “file_exists” or both?

...ent, but it's not a dir //do something with file - delete, rename, etc. unlink('file'); //for example mkdir('file', NEEDED_ACCESS_LEVEL); } } else { //no file exists with this name mkdir('file', NEEDED_ACCESS_LEVEL); } ...
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Biggest advantage to using ASP.Net MVC vs web forms

... there is an abundance of information with regards to questions, problems, etc. Offers more third-party control - need to consider your existing toolkits. ASP.NET MVC: Separation of concerns (SoC) • From a technical standpoint, the organization of code within MVC is very clean, organized an...
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How to decode Unicode escape sequences like “\u00ed” to proper UTF-8 encoded characters?

...3. So my production code looks like: $i=11263; while($i>08448){ ...etc... You can look up the blocks of Unicode by type here: http://unicode-table.com/en/ If you know you're translating Arabic or Telegu or whatever, you can just replace those codes, not all 65,000. You could apply this s...
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Gradients in Internet Explorer 9

...he gradient, or make it more sophisticated (radial gradients, transparency etc.) but this is great for those simple (vertical) linear gradients. share | improve this answer | ...
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Function to calculate distance between two coordinates

... 这个问题问了JavaScript的答案。. You have to convert it to english :) – VulfCompressor Oct 12 '15 at 15:56 ...
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OnInitUpdate、OnUpdate、OnDraw与OnPaint - C/C++ - 清泛网 - 专注C/C++及内核技术

...。 在用户进行输入后如何使视的状态得到更新?这个问题在一个文档对应一个视图时是不存在的,但是现在有一个文档对应了两个视图,当在一个视上进行了 输入时如何保证另一个视也得到通知呢?MFC的做法是利用文档来处...