2009
OS X Software
Having trouble getting your regular expressions just right? Not sure what they match and what they leave out? Tired of having to write test programs every time? RegExhibit can help.
2008
Regular Expression Library
by 9 othersthe Internet's first Regular Expression Library. Currently we have indexed 2116 expressions from 1292 contributors around the world.
2007
2006
reAnimator: Regular Expression FSA Visualizer
by 3 othersTool made with Flash for visualizing how regular expression engines use finite-state automata to match regular regular expression patterns against text.
Geek Pit: Introduction to Regular Expressions
It goes over basic use and syntax, and offers examples with sed/awk/grep, Perl and Emacs. You can download it here in the original Oo.org or PDF formats, or check it out online:
Regular Expressions PHP Tutorial
by 6 others I have searched the web far and near for a good tutorial on PHP Regular Expressions
A Tao of Regular Expressions
by 6 othersHas also Regular Expressions Syntax Support information for various languages.
Regular Expression HOWTO
This document is an introductory tutorial to using regular expressions in Python with the re module. It provides a gentler introduction than the corresponding section in the Library Reference.
Learning to Use Regular Expressions
by 10 othersThis tutorial is aimed at users and programmers who have begun to work with tools that use regular expressions, but who are not quite comfortable with the intricacies of them. Even users who may have used regular expressions in the past, but have forgotte
C#, .Net Framework: Google Search: find file extension with regex in c#
A simple regex that could be used in C# to find file extensions is:.+\.([^.]+)$This will find an extension that is at the end of the string. To find an extension anywhere in a string you can use: .+\.([^.]+)\s A regex to find a three letter extension at t
reWork: a regular expression workbench
Type a regular expression into the "pattern" field, and a string to match it against into "input". The results area updates as you type.
