Module type Monad.Infix2

module type Infix2 = sig .. end
Same as Infix, except the monad type has two arguments. The second is always just passed through.

type ('a, 'd) t 
val (>>=) : ('a, 'd) t ->
('a -> ('b, 'd) t) -> ('b, 'd) t
val (>>|) : ('a, 'd) t -> ('a -> 'b) -> ('b, 'd) t