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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...时性较差。虽然可以通过加快轮询频率的方式来缓解这个问题,但相应付出的代价也不小:一来会使负载居高不下,二来也会让带宽捉襟见肘。 再来说说Long Polling,如果使用传统的LAMP技术去实现的话,大致如下所示: Long Pol...
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Unsafe JavaScript attempt to access frame with URL

...my is referring to is a server side proxy. See e.g. benalman.com/projects/php-simple-proxy or developer.yahoo.com/javascript/howto-proxy.html or google.com/… or René de Kat's solution at stackoverflow.com/a/11224975/27938 – Oskar Austegard Nov 19 '12 at 14:...
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How to force the browser to reload cached CSS/JS files?

...ate suggestions from John Millikin and da5id. This solution is written in PHP, but should be easily adapted to other languages. Update 2: Incorporating comments from Nick Johnson that the original .htaccess regex can cause problems with files like json-1.3.js. Solution is to only rewrite if there ...
https://www.tsingfun.com/it/tech/1893.html 

msvcr110d.dll!_CrtIsValidHeapPointer(const void * pUserData) 行 2036 ...

...分配的堆。这样就不会存在多个释放过程,也就不会出现问题了。 可能原因2:delete释放了常字符串。如 char *p = "abc"; delete p; 可能原因3: CString m_strTest; ... GetPrivateProfileString(INI_SECTION, "test", "", m_strTest.GetBuffer(), MAX_PATH...
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How do I check if a string contains a specific word?

...", we can't use simpler constructs like !strpos($a, 'are'). Edit: Now with PHP 8 you can do this: if (str_contains('How are you', 'are')) { echo 'true'; } RFC str_contains share | improve this...
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How do I extract the contents of an rpm?

... Did you try the rpm2cpio commmand? See the example below: $ rpm2cpio php-5.1.4-1.esp1.x86_64.rpm | cpio -idmv /etc/httpd/conf.d/php.conf ./etc/php.d ./etc/php.ini ./usr/bin/php ./usr/bin/php-cgi etc share ...
https://www.tsingfun.com/ilife/tech/1156.html 

“互联网卖菜”没那么简单 创业者不要盲目跟风 - 资讯 - 清泛网 - 专注C/C+...

...自提的鲜果说,还是送菜上门的七天买菜网,都因为价格问题导致的盈利困境而歇业,价格是上门送菜的最大障碍,要么狂砸补贴,要么把量做大,维持开支,没有别的路。笔者接触过一些做上门送菜的创业者,往往会问第一个...
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来自微软的一手内幕:Windows 10是怎么出炉的 - 创意 - 清泛网 - 专注C/C++及内核技术

...各种bug,他都非常耐心的在听,甚至还用邮件秒传了一个问题的解决方案给我。 他承认,干了这么多年的产品支持,自己对品质有一定偏执。很明显,他是发自内心地在乎。虽然许多人会开玩笑说,IT支持只不过是一个告诉...
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PHP validation/regex for URL

...references to some flags have been removed entirely. More info here: news.php.net/php.internals/99018 – S. Imp May 12 '17 at 21:53  |  show 1...
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Facebook Open Graph not clearing cache

...ER['HTTP_HOST'].'/'.$user_photo; <meta property="og:url" content="<?php echo $url; ?>"/> <meta property="og:image" content="<?php echo $user_photo; ?>" Just add this to your page: // with jQuery $.post( 'https://graph.facebook.com', { id: '<?php echo $url;...