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Re: Massive regexp search and replace

by Anonymous Monk
on Feb 10, 2005 at 15:00 UTC ( #429755=note: print w/ replies, xml ) Need Help??


in reply to Massive regexp search and replace

One problem you have is that you're recompiling the regexes over and over again. Better to cache them. I'd do something like:
# Preprocessing phase. my @subs = map {my($r, $s) = split /\t/; [qr/$r/, $s]} @Patts; # Real stuff. open(my $in, "<", "...") or die "..."; open(my $out, ">", "...") or die "..."; while (<$in>) { s/$_[0]/$_[1]/g for @subs; # No need for /ee, is there? print $out $_; } close $out or die "...";

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