Module type Datatype.Map

module type Map = sig .. end
A standard OCaml map signature extended with datatype operations.

include Map.S
module Key: Datatype.S  with type t = key
Datatype for the keys of the map.
module Make: 
functor (Data : Datatype.S-> Datatype.S with type t = Data.t t
Build a datatype of the map according to the datatype of values in the map.