map -package:containers -package:aeson -package:conduit -package:basement -package:regex-tdfa -package:blaze-html -package:integration -package:dlist -package:insert-ordered-containers -package:os-string -package:ghc package:unordered-containers is:exact
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"]