Parameter Via_pure_and_lift2.Req

type ('a, 'index) t

The type held by the Indexed Alternative.

include Preface_specs.Indexed_applicative.WITH_PURE_AND_LIFT2 with type ('a, 'index) t := ('a, 'index) t
include Preface_specs.Indexed_applicative.WITH_PURE with type ('a, 'index) t := ('a, 'index) t
val pure : 'a -> ('a, 'index) t

Lift a value from 'a into a new t.

include Preface_specs.Indexed_apply.WITH_LIFT2 with type ('a, 'index) t := ('a, 'index) t
val lift2 : ('a -> 'b -> 'c) -> ('a, 'index) t -> ('b, 'index) t -> ('c, 'index) t

Lift a binary function that acts on arbitrary values into a function that acts t values.

include Preface_specs.Indexed_alternative.WITH_NEUTRAL_AND_COMBINE with type ('a, 'index) t := ('a, 'index) t
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.