Rails用這套慣例來大大簡化了路由設定。那程式該怎麼寫呢? 我們在config/routes.rb加入以下一行程式：
resources :events如此就會自動建立四個命名路由(named routes)，搭配四個HTTP動詞，對應到七個Actions。它的實際作用，就如同以下的設定：
get '/events' => "events#index", :as => "events"
post '/events' => "events#create", :as => "events"
get '/events/:id' => "events#show", :as => "event"
put '/events/:id' => "events#update", :as => "event"
| netstat -apnl | awk '/^tcp/ {++state[$NF]} END {for(key in state) print key,"\t",state[key]}' |
| #设置颜色的格式： \e[背景色;前景色;高亮m | |
| # \033[背景色;前景色;高亮m | |
| #恢复默认为 \e[0m | |
| #其中背景色可以被以下数字替换 | |
| #第一个参数： | |
| #0 透明（使用终端颜色）,1 高亮 40 黑, 41 红, 42 绿, 43 黄, 44 蓝 45 紫, 46 青 | |
| #绿, 47白（灰） | |
| #第二个参数： | |
| #前景色（也就是文本的颜色）可以被以下数字替换 | |
| #30 黑 31 红, 32 绿, 33 黄, 34 蓝, 35 紫, 36 青绿, 37 白（灰） |
| package com.zavakid.javassist.test; | |
| public class Hello { | |
| public void say(){ | |
| System.out.println("Hello world."); | |
| } | |
| } | |
| //====================== | |
| package com.zavakid.javassist.test; |
| <?php | |
| function urlReplace($text, $replaceWith){ | |
| // set the callback function | |
| $callback = function($match)use($replaceWith){ | |
| $replaced0 =preg_replace('/\{0\}/', $match[0], $replaceWith); | |
| return preg_replace('/\{1\}/', toUpper($match[0]), $replaced0); | |
| }; | |
| var_dump($callback); | |
| return preg_replace_callback('/https?:\/\/\S+(?= |$)/',$callback, $text); |
| <?php | |
| class StringRandomizer { | |
| public function process( $text ) { | |
| return preg_replace_callback('/\{(((?>[^\{\}]+)|(?R))*)\}/x', array( $this, 'replace' ), $text ); | |
| } | |
| public function replace( $text ) { | |
| $text = $this->process( $text[ 1 ] ); |
| package com.zavakid.concurrent; | |
| import java.util.concurrent.Semaphore; | |
| import org.junit.Test; | |
| /** | |
| * @author Zava 2012-10-12 下午1:06:15 | |
| * @version 1.0 | |
| */ |
| text = "{{asd}} sdfadsf afas {% a %}xxx{% enda %} asdfa asdf s af " | |
| text.split(Liquid::TemplateParser) | |
| # result: | |
| [ | |
| "", | |
| "{{asd}}", | |
| " sdfadsf afas ", | |
| "{% a %}", | |
| "xxx", |
| #/bin/bash | |
| # 其实是使用了 perl 的 alarm | |
| perl -e "alarm 10; exec @ARGV" "$@ |
L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
SSD random read ........................ 150,000 ns = 150 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs