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O'Reilly Open Source Convention
Sheraton San Diego Hotel, San Diego, CA
July 23-27, 2001

News Coverage


Dissecting Regular Expressions

Jeff Pinyan, Rensselaer Polytechnic Institute

Track: Perl Conference 5
Date: Friday, July 27
Time: 2:30pm - 3:15pm
Location: Grande Ballroom A

Perl's regular expressions, arguably its most powerful and confusing feature, are not terribly easy to decipher, specifically for beginners to the language, and those that aren't familiar with shell tools like sed, awk, and grep. Using the YAPE::Regex module, though, we can parse a regex and break it up into tokens -- and the YAPE::Regex::Explain module can turn these tokens into meaningful text. Y::R::E serves as a teaching tool, showing how a regex functions, with useful reminders of the intricacies of Perl's regexes.

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