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If you have a few regex to apply to each line an array of pre-compiled regex is about the most optimimum you are going to get if you need to know which regex matched. If you only care about the fact one did match you could construct one super regex to rule them all but that could be dificult.

#!/usr/bin/perl use strict; use warnings; my @regex; while (<DATA>) { chomp; push @regex, qr/$_/; } while (my $line = <STDIN>) { for (0..$#regex) { print "matched no: $_\n" if $line=~/$regex[$_]/; } } __DATA__ foo bar baz

Cheers,
R.

Pereant, qui ante nos nostra dixerunt!

In reply to Re: Regex and question of design by Random_Walk
in thread Regex and question of design by amaguk

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