Module Map
module type OrderedType = sig
type t
val compare : t -> t -> int
end
module type S = sig
type key
type 'a t
val empty : 'a t
val is_empty : 'a t -> bool
val mem : key -> 'a t -> bool
val add : key -> 'a -> 'a t -> 'a t
val singleton : key -> 'a -> 'a t
val remove : key -> 'a t -> 'a t
val merge : key -> 'a option -> 'b option -> 'c option -> 'a t -> 'b t -> 'c t
val compare : 'a -> 'a -> int -> 'a t -> 'a t -> int
val equal : 'a -> 'a -> bool -> 'a t -> 'a t -> bool
val iter : key -> 'a -> unit -> 'a t -> unit
val fold : key -> 'a -> 'b -> 'b -> 'a t -> 'b -> 'b
val for_all : key -> 'a -> bool -> 'a t -> bool
val exists : key -> 'a -> bool -> 'a t -> bool
val filter : key -> 'a -> bool -> 'a t -> 'a t
val partition : key -> 'a -> bool -> 'a t -> ('a t * 'a t)
val cardinal : 'a t -> int
val bindings : 'a t -> (key * 'a) list
val min_binding : 'a t -> (key * 'a)
val max_binding : 'a t -> (key * 'a)
val choose : 'a t -> (key * 'a)
val split : key -> 'a t -> ('a t * 'a option * 'a t)
val find : key -> 'a t -> 'a
val map : 'a -> 'b -> 'a t -> 'b t
val mapi : key -> 'a -> 'b -> 'a t -> 'b t
end