@user_types =(
	[ '037' => 'member' ],
	[ '165' => 'public' ],
	[ '022' => 'staff' ],
	[ '683' => 'babe' ],
	[ '001' => 'old fart' ],
);

##</code><code>##

%lookup = map { @$_ } @user_types;

##</code><code>##

use Tie::IxHash;

tie my %user_types, 'Tie::IxHash';

%user_types = (
	'037' => 'member',
	'165' => 'public',
	'022' => 'staff',
	'683' => 'babe',
	'001' => 'old fart',
);