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January 17, 2004
Regular Expression Maintainablity
perl.com: Maintaining Regular Expressions [Jan. 16, 2004]
Aaron Mackey does a wonderful job of suggesting more maintainable regular expression idioms. His use of (?{}) to assign the results of capturing parenthesis inline was particularly interesting to me. I may have seen it before, but this is the first time it made sense.
The article goes into some serious magic later including deferred execution of the (?{}) blocks and Regexp::Fields.
Copyright 2004, G. Wade Johnson. Licensed under Creative Commons Attribution License 2.5.