well, grep operates on a list, so you'd better apply it to the lines directly. Instead of slurping the file into a scalar buffer, why not put it in an array in the first place? 
use strict;
use warnings;

open my $fh, '<', 'defines.h' or die $!;
my @lines = <$fh>;

my @all_28s = grep /28/, @lines;
my @all_42s = grep /UNIVERSE_ANSWER/, @lines;

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In reply to Re: Grepping a File by rhesa
in thread Grepping a File by carcassonne

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