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Old 03-10-2004, 05:03 PM   #1
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Wink Regular Expression (RegEx) Resources

Steve Mansour has compiled a nice reference for Perl Regular Expressions.

If you find other good reference sources, post them here.
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Old 03-10-2004, 05:28 PM   #2
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Another good RegEx resource is the book O'Reilly's Mastering Regular Expressions (http://www.oreilly.com/catalog/regex/ and http://www.oreilly.com/catalog/regex2/).
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Old 03-11-2004, 10:05 PM   #3
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The following comes straight out of the Sitescooper docs and has several more good Perl resources in addition to the Tao one:
Quote:
For more information on regular expressions in general, and the Perl variety that sitescooper uses, I recommend checking out some of these pages. First of all, Steve Litt at Troubleshooters.com has put together a great guide here: Steve Litt's PERLs of Wisdom: PERL Regular Expressions. Highly recommended. Next up, there's A Tao Of Regular Expressions, it's quite good. Also, weblogger Jorn Barger has written up a good page of to regexps at Regular Expressions Resources on the Web. The "Perl" section is most relevant to sitescooper's regexp format. The About.com guide to Perl has a great tutorial on them too.
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Old 04-01-2004, 03:29 PM   #4
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Another great RegEx resource, especially for beginners:

http://www.regular-expressions.info/tutorial.html
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Old 04-03-2004, 03:27 AM   #5
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A great tool to learn RegEx is The RegEx Coach.

The Regex Coach is a graphical application for Linux and Windows which can be used to experiment with (Perl-compatible) regular expressions interactively. It has the following features:

- It shows whether a regular expression matches a particular target string.
- It can also show which parts of the target string correspond to captured register groups or to arbitrary parts of the regular expression.
- It can "walk" through the target string one match at a time.
- It can simulate Perl's split and s/// (substitution) operators.
- It tries to describe the regular expression in plain English.
- It can show a graphical representation of the regular expression's parse tree.
- It can single-step through the matching process as performed by the regex engine.
- Everything happens in "real time", i.e. as soon as you make a change somewhere in the application all other parts are instantly updated.

Best of all, it's free!!
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Old 04-03-2004, 03:35 AM   #6
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Another great resource is the Regular Expression Library, which has hundreds of patterns figured out for you already. Good use if you don't want to reinvent the wheel
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Old 06-01-2004, 04:18 PM   #7
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Learning Perl the Hard Way is a free ebook available as Adobe PDF. Chapter 2 focuses on Regular Expression. Good read!
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