map -package:containers -package:bytestring -package:basement -package:base -package:base-compat-batteries -is:exact -package:os-string -package:integration -package:invertible -package:base-compat -package:base-prelude -package:dlist -package:regex-tdfa package:monoidal-containers is:exact
O(n) Transform this map by applying a function to every value.