map -package:containers -package:case-insensitive -package:dlist -package:imports -package:basement -package:foldl -package:invertible -package:base-prelude -package:os-string -package:conduit -package:filepath -package:bytestring is:exact 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"]