func({1=>'a', 
      2=>'a',
      'a'=>99,
      'f'=>'234',
      'xyzzy'=>'Grue be here.',
      'foo'=>'geww',});


sub func
  {
    my $hashref = shift;

    print "an item from hash: $hashref->{'xyzzy'}\n";
    printf("another item from hash: %s\n", $hashref->{'foo'});
  }