my ($head, $tail); $tail = append($head, 1); for $value ( 2 .. 10 ) { $tail = append($tail, $value); } sub append { my($list, $value) = @_; my $node = { VALUE => $value }; if ($list) { $node->{LINK} = $list->{LINK}; $list->{LINK} = $node; } else { $_[0] = $node; } return $node; }