Sourcetype ('a, 'b, 'c) t = 'a * 'b * 'c Sourceval hash : ('a -> int) -> ('b -> int) -> ('c -> int) -> ('a, 'b, 'c) t -> int Sourceval equal :
('a -> 'a -> bool) ->
('b -> 'b -> bool) ->
('c -> 'c -> bool) ->
('a, 'b, 'c) t ->
('a, 'b, 'c) t ->
bool