Module Let_syntax3.Let_syntax
val return : 'a -> ('a, _, _) tval (<*>) : ('a -> 'b, 'd, 'e) t -> ('a, 'd, 'e) t -> ('b, 'd, 'e) tval (<*) : ('a, 'd, 'e) t -> (unit, 'd, 'e) t -> ('a, 'd, 'e) tval (*>) : (unit, 'd, 'e) t -> ('a, 'd, 'e) t -> ('a, 'd, 'e) tval (>>|) : ('a, 'd, 'e) t -> ('a -> 'b) -> ('b, 'd, 'e) t