type (!'a, !'b) t = ('a * 'b) list
val t_of_sexp : (Sexplib0__.Sexp.t -> 'a) -> (Sexplib0__.Sexp.t -> 'b) -> Sexplib0__.Sexp.t -> ('a, 'b) tval sexp_of_t : ('a -> Sexplib0__.Sexp.t) -> ('b -> Sexplib0__.Sexp.t) -> ('a, 'b) t -> Sexplib0__.Sexp.tval add : ('a, 'b) t -> equal:('a -> 'a -> bool) -> 'a -> 'b -> ('a, 'b) tval find : ('a, 'b) t -> equal:('a -> 'a -> bool) -> 'a -> 'b optionval find_exn : ('a, 'b) t -> equal:('a -> 'a -> bool) -> 'a -> 'bval mem : ('a, 'b) t -> equal:('a -> 'a -> bool) -> 'a -> boolval remove : ('a, 'b) t -> equal:('a -> 'a -> bool) -> 'a -> ('a, 'b) tval map : ('a, 'b) t -> f:('b -> 'c) -> ('a, 'c) tval inverse : ('a, 'b) t -> ('b, 'a) t