Computers

Regex board on PHP forum. Features user-contributed questions and answers.

Series of two articles about regex in the Unix Grep command. Features examples of text searches.

Notes from computer science class about TCL. Presents the Chomsky hierarchy, finite automata and regular expressions.

Technical article about regular expressions. Discusses types of automata, searching, parsing, validating.

Documentation for regex in Emacs Lisp. Describes the functions.

Regex manual pages for Awk. Discusses syntax, dynamic regexps.

Introduction to regex. Presents syntax, code samples.

Unicode Technical Standard document. Describes guidelines for extending regex engines to use Unicode.

Article by O'Reilly author. Presents classes, engine details and sample expressions.

Blog of Steven Levithan. Discusses the Regex Cookbook by Levithan and Jan Goyvaerts, regex APIs and regex recipes.

One-page reference. Presents major points of regex syntax.

Review of regex libraries in the Haskell programming language. Includes feature matrix and benchmark.

Python regex tutorial. Focuses on the re module.

Notes from computer science class. Compares regular expressions to finite automata.

MSDN documentation. Features detailed examples, list of references.

Collection of articles. Features tools, general techniques and regex implementation in various languages.

Regex resources. Features tutorial, reference and glossary.

Blog post. Discusses techniques such as commenting, callbacks, lookarounds, conditionals and named patterns.

Manual page for MySQL regex. Features operators and character classes, includes user comments.

Collection of questions and user-submitted answers. Features ratings for each answer and comment.

Tutorial on nixCraft blog. Features syntax, tricks, comments.

Regex section of the PHP manual. Covers PCRE engine, pattern syntax, PHP functions, and includes user comments.