Functor Datatype.Triple

module Triple: 
functor (T1 : S-> 
functor (T2 : S-> 
functor (T3 : S-> S with type t = T1.t * T2.t * T3.t
Parameters:
T1 : S
T2 : S
T3 : S

include Datatype.S_no_copy
val copy : Datatype.t -> Datatype.t
Deep copy: no possible sharing between x and copy x.