Aspect<A, T> constructor

const Aspect<A, T>(
  1. A fn(
    1. T
    ), [
  2. Key? key
])

Create an InheritableAspect of T that depends on Inheritable of T for any changes of A produced by fn.

Implementation

const Aspect(A Function(T) fn, [Key? key]) : this._(null, fn, key, null);