some("Foo", @alphabet);


##</code><code>##

   some(@alphabet, "Foo");          # BAD!
   some("Foo", @alphabet, @alpha2); # BAD!

##</code><code>##

   some("Foo", @alphabet);


##</code><code>##

some("Foo", \@alphabet);

sub some {
  my ($one, $alpha_aref) = @_;
  my $letter_b = $alpha_aref->[1];
}