regex-coach May 2005

regex-coach@common-lisp.net

2 participants
1 discussions

[regex-coach] Feature request: Regexp performance indicator/steps used
by Morten Hattesen 03 May '05

03 May '05

I really appreciate what Regex Coach has done for honing my Regular Expressions skills, and assisting debugging of complex expressions. I frequently wish to optimize regular expressions (mainly by reducing possible backtracking http://www.regular-expressions.info/atomic.html), but lack a way to test the relative performance between different regular expressions. To measure performance of a given regexp, I would really like the possibility of having Regex Coach count the total number of steps used by the underlying regexp engine for a given regexp search, or some other meaningful performance indicator. This could possibly be displayed when pressing the ">>" (show next match) button (regardless of whether a match was found or not). This way, you can quickly try out different matching approaches, and get an indication of the relative performance. Rgds, Morten Hattesen

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regex-coach May 2005