Apply.Core_over_functor_via_lift2module Functor : Preface_specs.Functor.WITH_MAPmodule Req : Preface_specs.Apply.WITH_LIFT2 with type 'a t = 'a Functor.ttype 'a t = 'a Req.tThe type held by the Apply.
May apply a function wrapped into an t to a value also wrapped into an t.