module Assoc: sig .. end
type ('a, 'b) t = ('a * 'b) list
val add : ('a, 'b) t ->
?equal:('a -> 'a -> bool) -> 'a -> 'b -> ('a, 'b) t
val find : ('a, 'b) t -> ?equal:('a -> 'a -> bool) -> 'a -> 'b option
val find_exn : ('a, 'b) t -> ?equal:('a -> 'a -> bool) -> 'a -> 'b
val mem : ('a, 'b) t -> ?equal:('a -> 'a -> bool) -> 'a -> bool
val remove : ('a, 'b) t ->
?equal:('a -> 'a -> bool) -> 'a -> ('a, 'b) t
val map : ('a, 'b) t -> f:('b -> 'c) -> ('a, 'c) t
val inverse : ('a, 'b) t -> ('b, 'a) t
val compare : ('a -> 'a -> int) ->
('b -> 'b -> int) ->
('a, 'b) t -> ('a, 'b) t -> int
val t_of_sexp : (Sexplib.Sexp.t -> 'a) ->
(Sexplib.Sexp.t -> 'b) -> Sexplib.Sexp.t -> ('a, 'b) t
val sexp_of_t : ('a -> Sexplib.Sexp.t) ->
('b -> Sexplib.Sexp.t) -> ('a, 'b) t -> Sexplib.Sexp.t