Parameter Via_map_and_lift2.Req

type ('a, 'index) t

The type held by the Indexed Apply.

include Preface_specs.Indexed_functor.WITH_MAP with type ('a, 'index) t := ('a, 'index) t
val map : ('a -> 'b) -> ('a, 'index) t -> ('b, 'index) t

Mapping over t from 'a to 'b.

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.