May 2015
Intermediate to advanced
376 pages
5h 48m
Chinese
Content preview from 成為卓越程式設計師的38項必修法則
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| 第廿二章：凍結奇碼
凍結的長度
你必須宣告一個正確的數位冬天長度。如同納尼亞的冬天，你不會想要有一個無謂的冗
長凍結，讓聖誕節永遠不會到來！但是如果它太短，凍結會是個沒意義的舉動。
正確的週期取決於你的專案的複雜程度、它在測試時需要的事物（包括人與資源—我
們需要安裝或設置一整個獨立的測試平台，再加入管理員與技術人員來讓它持續運轉
嗎？）、已經被放入釋出版本的修改範圍（可能會影響回歸測試的程度），及可用來投入
測試與驗證的資源。
典型的凍結週期是兩週。
小心 Pareto 原則：我們在 IT 專案中經常看到“最後”的 20% 工作會花費總時間的 80%
（或左右）。要避免這一點，確保你在正確的時機進入凍結。不要在認為自己只需要“完
成”某些事情時宣告凍結。一旦凍結，所有事情就都結束了。
感受凍結
從程式碼凍結到釋出是段艱難的道路—不是在公園內野餐。相應地設定你的期望。
在程式碼凍結期間，你要知道，你無法修改被找出的 bug，因為它們的重要程度不足以
讓風險涉入其中。這已經不再是允許你修改所有程式的自由編寫時期了，否則你就不需
要宣告凍結。因此你要有失望及出貨的產品不如你預期的心理準備！
重點
你認為可以有更好的軟體出貨，並不是不尋常（或錯誤）的事情。
看一下光明面：因為你發現那些 bug 了，所以可以在下一個版本中修改它們。[Page-200]
你也要有心理準備在凍結期間累積
技術債務
1
。這是少數可以這麼做的時間點：沒有空
間可以做大範圍的修復時，你就必須用治標不治本的技術來修改問題，來產生“夠好”
的出貨產品。但是記得將這種工作視為 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.