Functor MoreLabels.Map.Make

module Make: 
functor (Ord : OrderedType) -> S  with type key = Ord.t

type key 

type +'a t 

val empty : 'a t

val is_empty : 'a t -> bool

val add : key:key ->
       data:'a -> 'a t -> 'a t

val find : key -> 'a t -> 'a

val remove : key -> 'a t -> 'a t

val mem : key -> 'a t -> bool

val iter : f:(key:key -> data:'a -> unit) ->
       'a t -> unit

val map : f:('a -> 'b) -> 'a t -> 'b t

val mapi : f:(key -> 'a -> 'b) ->
       'a t -> 'b t

val fold : f:(key:key -> data:'a -> 'b -> 'b) ->
       'a t -> init:'b -> 'b

val compare : cmp:('a -> 'a -> int) ->
       'a t -> 'a t -> int

val equal : cmp:('a -> 'a -> bool) ->
       'a t -> 'a t -> bool