map -package:containers -package:case-insensitive -package:base-prelude -is:exact -package:charset -package:dlist -package:basement -package:hedgehog -package:bytestring -package:psqueues -package:regex-tdfa -package:os-string is:exact -package:aeson package:monoidal-containers
O(n) Transform this map by applying a function to every value.