Thanks, Darren :)

I need to copy the array into an array, and not make a copy of the reference, as in: 

sub second {
   my $num_ref = shift;
   my $copy_of_ref = $num_ref;

   push(@$copy_of_ref, 6);

   my $sum = 0;

   foreach (@$copy_of_ref) {
      $sum += $_;
   }

   return $sum;
}

[download]
Am I right?

In reply to Re^2: Preserve the value of original array by Anonymous Monk
in thread Preserve the value of original array by Anonymous Monk

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