Aaaah ok - missed that reply =) That would explain why testing1() is considerably quicker than testing2() in the below: 

sub testing1 {
  print "At testing1 \n";
  $_[0] =~ s/foo/test/g;
}

sub testing2 {
  print "At testing2 \n";
  my $string = $_[0];
  $string =~ s/foo/test/g;
  return $string;
}

[download]
Thanks!

Andy

In reply to Re^4: Whats quicker - passing along as variable to sub, or global var? by ultranerds
in thread Whats quicker - passing along as variable to sub, or global var? by ultranerds

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