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Re: Slow Regex - How to Optimize

by InfiniteSilence (Curate)
on Aug 30, 2005 at 22:22 UTC ( #487970=note: print w/ replies, xml ) Need Help??

in reply to Slow Regex - How to Optimize

If I am not mistaken, this can be rewritten as:

#!/usr/bin/perl -w use strict; my ($wholefile); my (@keys, %SUBS); $SUBS{'b'} = 1; $SUBS{'c'} = 1; local $/; open(H,qq|$ARGV[0]|) or die "USAGE: <filename>"; #sloppy exa +mple $wholefile .= <H>; close(H); foreach (keys %SUBS) { while($wholefile=~m/\b$_\b/g){ push @keys, $_; } } 1;
Of course, I have no idea how:
  • You are getting the %SUBS hash populated in the first place. I thought that was the purpose of the script?
  • Why you would want to do this

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