map -package:containers -package:base -package:basement -package:monoidal-containers -package:Cabal-syntax -package:charset -package:ghc -package:dlist -package:case-insensitive -package:invertible -package:dense-linear-algebra package:aeson is:exact

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