[oclug] A Friday Regex Head Scratcher
je_oclug at kronos.honk.org
Thu Apr 23 09:35:27 EDT 2009
Dave O'Neill wrote:
> This generally won't be a problem for quickie commandline scripts that
> only run one or two regexes, but if you're writing something that
> performs a lot of regex matching, or that runs as a daemon, or under
> mod_perl or fastcgi, you should avoid using $&, $' and $`. Or... if you
> really need them and are on Perl 5.10, use the newer equivalents that
> don't come with a global penalty. See "man perlre" for more details.
Thanks for all the thoughts Dave. I think it's still perl 5.8 but I'm not
logged on right now to check. There's not a lot of regex matching in the
program but I'll note it for a future update to the app.
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