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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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best practice to generate random token for forgot password

...is - whole user account) So, the code will be as follows: //$length = 78 etc $token = bin2hex(random_bytes($length)); Update: previous versions of this answer was referring to uniqid() and that is incorrect if there is a matter of security and not only uniqueness. uniqid() is essentially just ...
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How can I force users to access my page over HTTPS instead of HTTP?

...Doesn't REQUEST_URI not include the "query string" (like ?page=1&id=41 etc.)? That's what the apache documentation says... So if I try to access site.com/index.php?page=1&id=12 I will be redirected site.com/index.php – Rolf Jul 8 '13 at 13:00 ...
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How do I resolve a HTTP 414 “Request URI too long” error?

...ault of 8190 if you want to support a longer request URI. The value is in /etc/apache2/apache2.conf. If not, add a new line (LimitRequestLine 10000) under AccessFileName .htaccess. However, note that if you're actually running into this limit, you are probably abusing GET to begin with. You should...
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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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What is the difference between application server and web server?

...rvers have plugins to support scripting languages like Perl, PHP, ASP, JSP etc. through which these servers can generate dynamic HTTP content. Most of the application servers have Web Server as integral part of them, that means App Server can do whatever Web Server is capable of. Additionally App S...
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What's the difference between isset() and array_key_exists()? [duplicate]

...heck happens at dim 2 and dim 1 value may not be an array for the 1st dim (etc...)) without getting a warning, without missing the existing key when its value is null (what were the PHP devs thinking would also be an interesting question, but certainly not relevant on SO). And of course we don't w...
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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...
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Detect when browser receives file download

...alue to the token's value. Client source code (JavaScript): function getCookie( name ) { var parts = document.cookie.split(name + "="); if (parts.length == 2) return parts.pop().split(";").shift(); } function expireCookie( cName ) { document.cookie = encodeURIComponent(cName) ...