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Classless Inter-Domain Routing - Wikipedia, the free encyclopedia - 5 views

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Tomcat 實用小技巧-Tomcat-Java - 3 views

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Java 7 路线图更新:反响强烈 - [Matrix - 与 Java 共舞] - 1 views

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Fast Code Eclipse Plugin - 5 views

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Mantis: SVN integration in 1.2.x » Crazy's Blog - 4 views

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    the addRepository can be used to add all kinds of repositories, see the config file for examples. Go to "http://yourdomain.ext/websvn" and you should be able to view your repository. My setup looked like this:
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A re-introduction to JavaScript - MDC - 1 views

  • var name = o && o.getName();
  • var name = otherName || "default";
  • The first argument to apply() is the object that should be treated as 'this'.
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  • apply() has a sister function named call, which again lets you set 'this' but takes an expanded argument list as opposed to an array.
  • Closures
  • A closure is the combination of a function and the scope object in which it was created. Closures let you save state - as such, they can often be used in place of objects.
  • An unfortunate side effect of closures is that they make it trivially easy to leak memory in Internet Explorer.
  • The above code sets up the element to turn red when it is clicked. It also creates a memory leak. Why? Because the reference to el is inadvertently caught in the closure created for the anonymous inner function. This creates a circular reference between a JavaScript object (the function) and a native object (el).
  • delete el;
  • var clickHandler = function() { this.style.backgroundColor = 'red'; } (function() { var el = document.getElementById('el'); el.onclick = clickHandler; })();
  • Surprisingly, one trick for breaking circular references introduced by a closure is to add another closure:
  • It's useful to start with an idea of the language's history. JavaScript was created in 1995 by Brendan Eich, an engineer at Netscape, and first released with Netscape 2 early in 1996. It was originally going to be called LiveScript, but was renamed in an ill-fated marketing decision to try to capitalise on the popularity of Sun Microsystem's Java language — despite the two having very little in common. This has been a source of confusion ever since.
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Preventing Java's java.lang.OutOfMemoryError: PermGen space failure | Eric's Agile Answers - 0 views

  • The "OutOfMemoryError: PermGen space" message is normally encountered during development activites where a long-running JVM is asked to load/unload builds.
  • The message is a symptom of an incomplete garbage collection sweep where resources are not properly released upon unload/restart. There is no shortage of debate (Hibernate forum, Sun forum, Spring Framework forum ) regarding which codebase is responsible for this symptom, but the finger of blame has been pointed at CGLIB, Hibernate, Tomcat, and even Sun's JVM.
  • In my experience, the most pain-free method of resolving this issue is to switch from Sun's JDK implementation to BEA's freely available JRockit implementation.
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  • On a recent project utilizing Tomcat 5.5.12 with Hibernate, I was plagued with this PermGen error, at times even experiencing it during web-based unit testing. Since making the switch to JRockit, I have not encountered this issue even once.
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    又是一位和我一樣都慘遭 "PermGen Space" 錯誤的開發者了!
    很奇怪,為何會發生這樣的錯誤呢?
    其中這篇文章所提到的技術,恰巧都是我現在所發生問題的架構,像是 Hibernate, Spring, Tomcat 等,還有 Sun JVM.... Orz
    比較特別的是,多數提供的解決方式,都是去調整 JVM 的設定(-XX:MaxPermSize=256m)。這位老兄則是採用了 BEA JRockit 版本的 JVM 解決此問題,他表示至少這招對他是管用的!
    不過,軟體開發很多時候都會發生這種「魔咒」,這種狀況底下,就好像一個並無可醫的人,只好嘗試各種偏方了!

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alive優生活-玩樂祕境-活動首頁 - 3 views

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InfoQ: Simple JAVA and .NET SOA interoperability - 0 views

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電腦玩物「免費軟體」私房推薦清單 2009,重灌後的 Freeware 心得筆記 | 電腦玩物 - 0 views

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Print Friendly 自動裁切無用資訊的網頁「列印模式」,幫你省墨水!  【重灌狂人】 - 0 views

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Jash: JavaScript Shell - 2 views

  • Jash is a DHTML-based window that gives you command-line JavaScript access to the current browser window
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Subversion 與 Mantis 整合作法 [蔡宗融個人網站] - 4 views

  • 將 svnlook 命令前加入 LANG=zh_TW.UTF-8 來測試整合 mantis 中文訊息問題.
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Mercurial SCM - 1 views

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Subversion (SVN) Repository Integration with Mantis Bug Tracker | U-notez - 1 views

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John Resig - JavaScript as a Language - 2 views

  • I think we"ve seen the JavaScript language move through many individual phases: The "We need scripting for web pages" phase. (Netscape) The "We should standardize this" phase. (ECMAScript) The "JavaScript isn"t a toy" phase. (Ajax) The "JavaScript as a programming language" phase.
    • Benx Shen
       
      John Resig 認為,Javascript 歷經了這些成長階段: 1. "網頁所需的腳本(script)語言" (網景 Netscape) 2. "標準化" (ECMAScript) 3. "不只是玩具" (Ajax) 4. "成為真正的程式語言" (!?)
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