Regular expressions are text strings formed in a particular syntax that is used in various tools and programming languages for searching text patterns within text. The sites in this section provide help, tutorials and collections of frequently asked questions ("FAQs") about various aspects of regular expressions.
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Sites 22
MSDN documentation. Features detailed examples, list of references.
Blog post. Discusses techniques such as commenting, callbacks, lookarounds, conditionals and named patterns.
Article by O'Reilly author. Presents classes, engine details and sample expressions.
Collection of articles. Features tools, general techniques and regex implementation in various languages.
Notes from computer science class. Compares regular expressions to finite automata.
Blog of Steven Levithan. Discusses the Regex Cookbook by Levithan and Jan Goyvaerts, regex APIs and regex recipes.
Regex manual pages for Awk. Discusses syntax, dynamic regexps.
Documentation for regex in Emacs Lisp. Describes the functions.
Review of regex libraries in the Haskell programming language. Includes feature matrix and benchmark.
Manual page for MySQL regex. Features operators and character classes, includes user comments.
Regex section of the PHP manual. Covers PCRE engine, pattern syntax, PHP functions, and includes user comments.
Regex board on PHP forum. Features user-contributed questions and answers.
Python regex tutorial. Focuses on the re module.
Notes from computer science class about TCL. Presents the Chomsky hierarchy, finite automata and regular expressions.
One-page reference. Presents major points of regex syntax.
Tutorial on nixCraft blog. Features syntax, tricks, comments.
Series of two articles about regex in the Unix Grep command. Features examples of text searches.
Technical article about regular expressions. Discusses types of automata, searching, parsing, validating.
Introduction to regex. Presents syntax, code samples.
Collection of questions and user-submitted answers. Features ratings for each answer and comment.
Unicode Technical Standard document. Describes guidelines for extending regex engines to use Unicode.
Regex resources. Features tutorial, reference and glossary.
Regex board on PHP forum. Features user-contributed questions and answers.
Notes from computer science class about TCL. Presents the Chomsky hierarchy, finite automata and regular expressions.
Series of two articles about regex in the Unix Grep command. Features examples of text searches.
Review of regex libraries in the Haskell programming language. Includes feature matrix and benchmark.
Python regex tutorial. Focuses on the re module.
Collection of articles. Features tools, general techniques and regex implementation in various languages.
Regex section of the PHP manual. Covers PCRE engine, pattern syntax, PHP functions, and includes user comments.
Manual page for MySQL regex. Features operators and character classes, includes user comments.
Tutorial on nixCraft blog. Features syntax, tricks, comments.
Collection of questions and user-submitted answers. Features ratings for each answer and comment.
Regex manual pages for Awk. Discusses syntax, dynamic regexps.
Technical article about regular expressions. Discusses types of automata, searching, parsing, validating.
Introduction to regex. Presents syntax, code samples.
Documentation for regex in Emacs Lisp. Describes the functions.
Article by O'Reilly author. Presents classes, engine details and sample expressions.
Blog post. Discusses techniques such as commenting, callbacks, lookarounds, conditionals and named patterns.
Notes from computer science class. Compares regular expressions to finite automata.
Regex resources. Features tutorial, reference and glossary.
Unicode Technical Standard document. Describes guidelines for extending regex engines to use Unicode.
One-page reference. Presents major points of regex syntax.
MSDN documentation. Features detailed examples, list of references.
Blog of Steven Levithan. Discusses the Regex Cookbook by Levithan and Jan Goyvaerts, regex APIs and regex recipes.
