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MongoDB sort排序、index索引教程 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...据如下: { "_id" : ObjectId("56066542ade2f21f36b0313a"), "title" : "PHP 教程", "description" : "PHP 是一种创建动态交互性站点的强有力的服务器端脚本语言。", "by" : "菜鸟教程", "url" : "https://www.tsingfun.com", "tags" : [ "php" ], "likes" : 200 } { "_id" : Obje...
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String comparison using '==' vs. 'strcmp()'

It seems that PHP's === operator is case sensitive. So is there a reason to use strcmp() ? 13 Answers ...
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How do I remove  from the beginning of a file?

...S file that looks fine when I open it using gedit , but when it's read by PHP (to merge all the CSS files into one), this CSS has the following characters prepended to it:  ...
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Is there any particular difference between intval and casting to int - `(int) X`?

... (int) is faster than intval(), according to wiki.phpbb.com/Best_Practices:PHP – Martin Thoma Sep 1 '11 at 11:33 ...
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Create a table without a header in Markdown

...n in Ruby byword: "All tables must begin with one or more rows of headers" PHP Markdown Extra "second line contains a mandatory separator line between the headers and the content" RDiscount Uses PHP Markdown Extra syntax. GitHub Flavoured Markdown Parsedown: A parser in PHP (used e.g. in Laravel ema...
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C++虚继承的概念 - C/C++ - 清泛网 - 专注C/C++及内核技术

...的同名的数据成员在内存中有不同的拷贝造成数据不一致问题,将共同基类设置为虚基类。这时从...C++中虚拟继承的概念 为了解决从不同途径继承来的同名的数据成员在内存中有不同的拷贝造成数据不一致问题,将共同基类设...
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Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...态数据 临时缓存数据 后台统计用的流水数据 导致的问题就是当你想扩分片的时候,客户端 Hash 映射就变了,这是要迁移数据的。而所有数据放在一组 Redis 里,要把它们分开就麻烦了,每个 Redis 实例里面都是千万级的 key。 ...
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Best way to parse RSS/Atom feeds with PHP [closed]

...ll formed. Are there any other options for parsing RSS and Atom feeds with PHP? 10 Answers ...
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Get img thumbnails from Vimeo?

...on for. output Specify the output type. We currently offer JSON, PHP, and XML formats. So getting this URL http://vimeo.com/api/v2/video/6271487.xml <videos> <video> [skipped] <thumbnail_small>http://ts.vimeo.com.s3.amazonaws.com/235/662/235...
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Proper Repository Pattern Design in PHP?

...email']); // Return view return Response::view('all_users.php', ['users' => $users]); } public function add() { return Response::view('add_user.php'); } public function insert(UserRepositoryInterface $repository) { // Create new user mode...