map -package:containers -package:basement -package:dlist is:exact -package:monoidal-containers -package:psqueues -package:foldl -package:integration -package:hedgehog -package:bytestring -package:os-string -package:invertible package:unordered-containers
Transform this map by applying a function to every value.
Transform this set by applying a function to every value.
The resulting set may be smaller than the source.
>>> HashSet.map show (HashSet.fromList [1,2,3])
HashSet.fromList ["1","2","3"]