Re^2: Match Numeric Range

[Monk::Thomas]

@OP

You could also write the conditional as

if ($range >= 300 and $range <= 400)

In this case it actually does not make a difference which one you use, but

open my $fh, '<', $filename
  || die;

and

open my $fh, '<', $filename
  or die;

are two totally different things due to different order of precedence. (A verbose explanation can be found at 'or' vs '', '&&' vs 'and'.)