You're going to need to use references.

## Note-- do not copy and paste! Read perlman:perlref.
sub get_stuff {
   return (\@array, \%hash);
}

($array_ref, $hash_ref) = get_stuff;
@newarray = @$array_ref;
%hash = %$hash;
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Or instead of doing the second copy, use the references as-is:

($array_ref, $hash_ref) = get_stuff;
my $first_element = $array_ref->[0];
my $thingy = $hash_ref->{'thingy'};
[download]

Read perlman:perlref.

stephen