(local {: contains} (require :lib.contains)) (local {: head} (require :lib.head)) (local {: keys} (require :lib.keys)) (local {: kvflip} (require :lib.kvflip)) (local {: mill-at?} (require :lib.mill)) (local {: pprint} (require :lib.tableprint)) (local {: slice} (require :lib.slice)) (local {: space-is-neighbor?} (require :lib.space-is-neighbor)) (local {: tail} (require :lib.tail)) { : contains : head : keys : kvflip : mill-at? : pprint : slice : space-is-neighbor? : tail }