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Asynchronous shell exec in PHP

...verted to use echo "sudo command" | at now and commenting www-data out in /etc/at.deny – Julien Apr 16 '15 at 7:47 @Ju...
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分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...一台服务器来提供数据服务的时候,我会遇到如下的两个问题:1)一台服务器的性能不足以提供足够的能力服务于所有的网络...当我们在生产线上用一台服务器来提供数据服务的时候,我会遇到如下的两个问题: 1)一台服务...
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simple explanation PHP OOP vs Procedural?

...ulation, functions for processing arrays, functions for file input/output, etc] OOP is a special way of "chunking" Functions together into a "Class" A Class is just another level of "chunking" code together so that you can treat it as a unified whole A Class can be thought of as a "chunking" of met...
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How does RewriteBase work in .htaccess

...t regardless of whether the rule is in the "root", "subdir1", "subsubdir", etc. the /bar.php path always maps to http://example.com/bar.php. But the other rule, with the relative path, it's based on the directory that the rule is in. So if RewriteRule ^foo$ bar.php [L] is in the "root" and you ...
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...很多优化注意事项,但是看过这些文章后大多数存在一个问题就是只给出啥啥啥不能用,啥啥啥该咋用等,却很少有较为系统的进行真正性能案例分析的,大多数都是嘴上喊喊或者死记住规则而已(当然了,这话我自己听着都有...
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Best way to do multiple constructors in PHP

...class Student { protected $firstName; protected $lastName; // etc. /** * Constructor */ public function __construct() { // allocate your stuff } /** * Static constructor / factory */ public static function create() { $instance = ...
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What is your preferred php deployment strategy? [closed]

... rollback support, support for separate server roles such as web, db, app, etc., and deploys in parallel. It allows you to override config parameters on multiple levels, such as per stage, and logs the results of every deploy, optionally mailing it. Even though Capistrano and Webistrano are Ruby ap...
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How to make the 'cut' command treat same sequental delimiters as one?

... for parsing files where the separator is not whitespace (for example /etc/passwd) and that have a fixed number of fields. Two separators in a row mean an empty field, and that goes for whitespace too. share | ...
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Linux C/C++程序常用的调试手段及异常排查总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

...,介绍调试手段之前,我会首先对开发过程中可能遇到的问题进行一个总结,大概可以把问题分为以下几类:必现的程序逻辑错误概率性错误进 痛并快乐着 今天讲讲C/C++程序的常用调试手段,介绍调试手段之前,我会...
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OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

OS X10.9 环境下部署 QT5.3.1 常见的编译问题出于本身对UNIX系统的好奇,以及身边一群对 Swift 语言各种推崇的苹果教徒的影响,这几天折腾起 MAC OS X来,体验下这个被无数开发者... 出于本身对UNIX系统的好奇,以及身边一群对 Swift ...