http://www.geekyboy.com/archives/459

Clean Development Series: Part 1, Dirty Code (cause/effect)

Clean Development Series: Part 2, Dirty Code (why we do it)

Clean Development Series: Part 3, Dirty Code (how to spot/smell it)

Clean Development Series: Part 4, Rewrite dilemma

Clean Development Series

原文：http://www.cnblogs.com/liuzc/p/7073988.html