map -package:containers -package:aeson -package:bytestring -package:invertible -package:foldl -package:hedgehog -package:os-string -package:basement -package:psqueues package:unordered-containers is:exact

map :: (v1 -> v2) -> HashMap k v1 -> HashMap k v2
unordered-containers Data.HashMap.Internal Data.HashMap.Internal.Strict Data.HashMap.Lazy Data.HashMap.Strict
Transform this map by applying a function to every value.
map :: (a -> b) -> Array a -> Array b
unordered-containers Data.HashMap.Internal.Array
map :: (Hashable b, Eq b) => (a -> b) -> HashSet a -> HashSet b
unordered-containers Data.HashSet Data.HashSet.Internal
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"]