package Sortable;
use overload 'cmp' => \&_cmp;

sub _cmp {
  $_[0]->cmp($_[1]);
}

1;

##</code><code>##

package AnonArray;
# Quick demo of how Sortable works
use Sortable;
@ISA = ('Sortable');

sub cmp {
  my $self = shift;
  my $other = shift;
  
  my $len = @$self > @$other ? @$self : @$other;
  for (0..($len - 1)) {
    if (my $res = $self->[$_] cmp $other->[$_]) {
      return $res;
    }
  }

  if ($len < @$self) {
    return 1;
  }
  elsif ($len < @$other) { 
    return -1;
  }
  else {
    return 0;
  }
}

sub new {
  my $class = shift;
  return bless [@_], $class;
}

1;

##</code><code>##

@sorted = sort @to_sort;