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ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术
...底层传输之上提供完全相同的行为。 这种方法存在两个问题： 一，在特定的传输之上建立类TCP的封装实际上使得传输成为多余的了。如果这种方法的行为类似于TCP，那么为什么一开始就不用TCP呢？（性能特性排除在这个规...
boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...越多的同行们能快速高质量地解决实际项目中遇到的各种问题，在此将我将自己实战中实用boost的经验分享给大家，本人才疏学浅，如果有什么问题希望读者们能帮助指出，大家共同探讨^_^
本章介绍的主题是multi_index_container
注...
Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术
...体系, 可以表示最多256个符号.
但是, 这里又出现了新的问题. 不同的国家有不同的字母, 因此, 哪怕它们都使用256个
符号的编码方式, 代表的字母却不一样. 比如, 130在法语编码中代表了é, 在希伯来语
编码中却代表了字母G...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
... can be used to detect if a variable has been already initialized. Additionally and more ideal is the solution of empty() since it does not generate a warning or error message if the variable is not initialized.
From PHP documentation:
No warning is generated if the variable does not exist. T...
How do I read any request header in PHP
...
IF: you only need a single header, instead of all headers, the quickest method is:
<?php
// Replace XXXXXX_XXXX with the name of the header you need in UPPERCASE (and with '-' replaced by '_')
$headerStringValue = $_SERVER['HTTP_XXXXXX_XXXX'];
ELSE IF: you run PHP...
Why is require_once so bad to use?
...system keeps a log of what's already been included/required. Every *_once call means checking that log. So there's definitely some extra work being done there but enough to detriment the speed of the whole app?
... I really doubt it... Not unless you're on really old hardware or doing it a lot.
I...
Sublime Text 3能用支持的插件推荐 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...后台运行检查机制造成sublime text 3有点小卡顿，虽然部分问题可以设置sublimeLinter来解决，用了sublimeLinter一小段时间后还是放弃了，觉得代码提示对我应该没必要了。
插件下载：https://github.com/SublimeLinter/SublimeLinter/tree/sublime-text...
How to include PHP files that require an absolute path?
... just a question, why realpath() for $_SERVER["DOCUMENT_ROOT"]? This shall not output always the canonical path?
– João Pimentel Ferreira
Nov 15 '15 at 0:30
add a comment...
URL rewriting with PHP
...
You can essentially do this 2 ways:
The .htaccess route with mod_rewrite
Add a file called .htaccess in your root folder, and add something like this:
RewriteEngine on
RewriteRule ^/?Some-text-goes-here/([0-9]+)$ /picture.php?id=$1
Thi...
搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...可用mongodb集群（三）—— 深入副本集》搭建后还有两个问题没有解决：从节点每个上面的数据都是对数据库全量拷贝， 按照上一节中《搭建高可用mongodb集群（三）—— 深入副本集》搭建后还有两个问题没有解决：
从节点...