## 1. As an array
sub one {
   return ( $val1, $val2 ); 
}
my @ar = one();
print $ar[0], $ar[1];

## 2. As an arrayref
sub two {
   return [ $val1, $val2 ];
}
my $aref = two();
print $aref->[0], $aref->[1];

## 3. As a hashref
sub three {
   return { val1 => $val1, val2 => $val2 };
}
my $href = three();
print $href->{ 'val1' }, $href->{ 'val2' };