#!/usr/bin/perl -w

use strict;
use warnings;

use Benchmark qw /cmpthese/;

cmpthese 10_000 => {
  'do_eval' =>  sub { do_eval() },
  'do_qr'   =>  sub { do_qr() },
};

sub do_eval {
  my $genome  = "AGTATCGATCGATGCATGCTAGCTAGCTAGCTAGCTAGCTAGSTGCTAGCT";
  my @regexes = ('abc', '^qwerty'); # dont care
  my $count   = 0;
  my $code    = 'if ($genome =~ /' . join ('/ && /', @regexes) . '/) { $count++; }';
  eval $code;
  die "Error: $@\n Code:\n$code\n" if ($@);
}

sub do_qr {
  my $string  = "AGTATCGATCGATGCATGCTAGCTAGCTAGCTAGCTAGCTAGSTGCTAGCT";
  my @regexes = ("abc", "^qwerty");  # dont care
  my $count   = 0;
  my @compiled  = map qr/$_/, @regexes;
  for(my $i=0; $i<@regexes; $i++) {
      if($string =~ /$compiled[$i]/){
          $count++;
      }
  }
}

__END__

          Rate do_eval   do_qr
do_eval 2162/s      --    -77%
do_qr   9242/s    328%      --