filter -package:base -package:unordered-containers -package:bytestring -package:containers -package:vector -package:base-compat -package:io-streams package:aeson

filter :: (v -> Bool) -> KeyMap v -> KeyMap v
aeson Data.Aeson.KeyMap
Filter all keys/values that satisfy some predicate.
filterWithKey :: (Key -> v -> Bool) -> KeyMap v -> KeyMap v
aeson Data.Aeson.KeyMap
Filter all keys/values that satisfy some predicate.