public static void Main() { Vector4 one = new Vector4(1, 1, 1, 1); Vector4 two_a, two_b; Vector4.AddViaConstructor(ref one, ref one, out two_a); Vector4.AddViaFieldMutation(ref one, ref one, out two_b); Console.WriteLine("{0} {1} {2}", one, two_a, two_b); }