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Re: Multiple file handling

by moritz (Cardinal)
on Sep 12, 2012 at 14:38 UTC ( #993234=note: print w/ replies, xml ) Need Help??


in reply to Multiple file handling

Scenario: A variable is mentioned in multiple file names and im able to grep once only.

Why should that be the case? That sounds like a rather odd restriction. If you absolutely must work with that restriction, you can do something like

use autodie; use List::MoreUtils qw/uniq/; open my $F1, $filename1; open my $F2, $filename2; my @files = unique map $_->[0], grep $_->[1] =~ /$variable/, (map [$filename1, $_] <$F1>), (map [$filename2, $_] <$F2>), ;

Of course that code is much slower and uses much more memory than if you'd just search file by file.

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