map -package:containers is:exact -package:foldl -package:charset -package:base-compat -package:base -package:insert-ordered-containers -package:basement -package:pipes -package:blaze-html -package:bytestring package:aeson

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