factory_static_generics.dart

class Circle<T extends num> {
  final T size;
  Circle(this.size);

  factory Circle.createWithFactory(T size) => Circle<T>(size);

  static Circle<T> createWithStatic<T extends num>(T size) => Circle<T>(size);
}


void main() {
  var c1 = Circle<int>.createWithFactory(5);
  var c2 = Circle.createWithStatic<int>(5);
}