Parameter Via_bind.Req

type ('a, 'index) t

The type held by the Indexed Monad Plus.

include Preface_specs.Indexed_monad.WITH_RETURN with type ('a, 'index) t := ('a, 'index) t
val return : 'a -> ('a, 'index) t

Lift a value into a t.

include Preface_specs.Indexed_bind.WITH_BIND with type ('a, 'index) t := ('a, 'index) t
val bind : ('a -> ('b, 'index) t) -> ('a, 'index) t -> ('b, 'index) t

bind f m passes the result of computation m to function f.

val combine : ('a, 'index) t -> ('a, 'index) t -> ('a, 'index) t

Combine two values of t into one.

val neutral : ('a, 'index) t

The neutral element of the t.