val hash : ('a -> int) -> ('b -> int) -> ('a, 'b) t -> int
val compare : ('a -> 'a -> Ordering.t) -> ('b -> 'b -> Ordering.t) -> ('a, 'b) t -> ('a, 'b) t -> Ordering.t
Tuple.T2
val hash : ('a -> int) -> ('b -> int) -> ('a, 'b) t -> int
val compare : ('a -> 'a -> Ordering.t) -> ('b -> 'b -> Ordering.t) -> ('a, 'b) t -> ('a, 'b) t -> Ordering.t