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 * [蒂姆·奥莱利随笔](http://g.yeeyan.org/books/2095) （由译言网翻译，电子版免费）
 * [SICP 解题集](http://sicp.readthedocs.org/en/latest/)
 * [精彩博客集合](https://github.com/hacke2/hacke2.github.io/issues/2)
-* [正则表达式简明参考](http://www.xiaoleilu.com/regex-guide/)
 * [中文文案排版指北](https://github.com/sparanoid/chinese-copywriting-guidelines)
 * [Standard C 语言标准函数库速查 (Cheat Sheet)](http://ganquan.info/standard-c/)
 * [Git Cheatsheet Chs](http://gh.amio.us/git-cheatsheet-chs/)