Module Make_let_syntax3.Let_syntax
val return : 'a -> ('a, _, _) X.tval (<*>) : ('a -> 'b, 'd, 'e) X.t -> ('a, 'd, 'e) X.t -> ('b, 'd, 'e) X.tval (<*) : ('a, 'd, 'e) X.t -> (unit, 'd, 'e) X.t -> ('a, 'd, 'e) X.tval (*>) : (unit, 'd, 'e) X.t -> ('a, 'd, 'e) X.t -> ('a, 'd, 'e) X.tval (>>|) : ('a, 'd, 'e) X.t -> ('a -> 'b) -> ('b, 'd, 'e) X.t