Monad_intf.Infix2
Same as Infix, except the monad type has two arguments. The second is always just passed through.
type ('a, 'e) t
val (>>=) : ('a, 'e) t -> ('a -> ('b, 'e) t) -> ('b, 'e) t
val (>>|) : ('a, 'e) t -> ('a -> 'b) -> ('b, 'e) t