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Re: Better solution to the code

by Punitha (Priest)
on Jan 25, 2008 at 09:53 UTC ( #664254=note: print w/ replies, xml ) Need Help??

in reply to Better solution to the code

Hi, try this

open(FH1,"+>Result_file.txt") or die "Cannot create file $!\n"; open(FH,"<Input_file.dat") or die "Cannot read $!\n"; while(<FH>) { my $data=$_; chomp($data); print FH1 "DATA:$data\n" if(grep/$data/,@tag); } close(FH);


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Re^2: Better solution to the code
by hipowls (Curate) on Jan 25, 2008 at 10:28 UTC

    Precompiling the regexes should provide a speedup and using List::MoreUtils::any() may do if the chance of a match is good since the test will shortcut on success. Naturally you will benchmark;-)

    use List::MoreUtils qw(any); open my $OUT, '>', 'Result_file.txt' or die "Cannot create file: $!\n" +; open my $IN, '<', 'Input_file.dat' or die "Cannot read file: $!\n"; # precompile the regexes. @tag_rx = map {qr/$_/} @tag; while ( my $data = <$IN> ) { print $OUT $data if any { $data =~ /$_/ } @tag_rx; } close $IN; close $OUT;

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