map -package:base -is:exact -is:exact -package:unordered-containers -package:bytestring package:aeson

Map a function over all values in the map.
Transform the keys and values of a KeyMap.
Map values and collect the Just results.
Map values and collect the Just results.
Same as fmap. Provided for the consistency with ToJSONKeyFunction.
An abstract interface for maps from JSON keys to values.
A map from JSON key type Key to v.
Convert a HashMap to a KeyMap.
Convert a HashMap Textto a KeyMap.
Convert a Map to a KeyMap.
Convert a Map Textto a KeyMap.
Convert a KeyMap to a HashMap.
Convert a KeyMap to a HashMap Text.
Convert a KeyMap to a Map.
Convert a KeyMap to a Map Text.
Contravariant map, as ToJSONKeyFunction is a contravariant functor.