map -package:containers -package:charset is:exact -package:insert-ordered-containers -package:dense-linear-algebra -package:basement -package:integration -package:ghc -package:pipes -package:monoidal-containers -package:invertible package:aeson

map :: (a -> b) -> KeyMap a -> KeyMap b
aeson Data.Aeson.KeyMap
Map a function over all values in the map.