val return : 'a -> ('a, 'i, 'i) t
include Base__.Monad_intf.Infix_indexed with type ('a, 'i, 'j) t := ('a, 'i, 'j) t
type ('a, 'i, 'j) t
val (>>=) : ('a, 'i, 'j) t -> ('a -> ('b, 'j, 'k) t) -> ('b, 'i, 'k) tval (>>|) : ('a, 'i, 'j) t -> ('a -> 'b) -> ('b, 'i, 'j) t