Tuple.T3
type ('a, 'b, 'c) t = 'a * 'b * 'c
val to_dyn : ('a -> Dyn.t) -> ('b -> Dyn.t) -> ('c -> Dyn.t) -> ('a, 'b, 'c) t -> Dyn.t
val hash : ('a -> int) -> ('b -> int) -> ('c -> int) -> ('a, 'b, 'c) t -> int