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Use a frickin hash!

use strict; use warnings; my @gl = qw( CD9 TBN NANOG KITL FUT4 SALL4 MYC STAT3 ESRRB AKP2 SOX2 POU5F1 KLF4 ); my @hfr_genes = qw( LYPLA1 LYPLA1 LYPLA1 LYPLA1 STAT3 LYPLA1 LYPLA1 STAT3 LYPLA1 LYPLA1 LYPLA1 LYPLA1 SOX2 ); # First thing: convert @hfr_genes into a hash!!! # Looking up a hash key is much faster than grepping an array. my %hfr_genes; $hfr_genes{$_}++ for @hfr_genes; # Now loop through the first list for (@gl) { my $count = $hfr_genes{$_}; print "Value $_ is present $count times\n" if $count; }
package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name

In reply to Re: A better way to make the script run faster? by tobyink
in thread A better way to make the script run faster? by rocketperl

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