using System;

​

public class Program

{

    public static void Main()

    {

​

        var box = new Box(20, 50);

​

        var (width, height, (innerWidth, innerHeight)) = box; // deconstruction

        Console.WriteLine($"內盒寬高 = {innerWidth} x {innerHeight}");

​

    }

}

​

public class Box

{

    public int Width { get; }

    public int Height { get; }

​

    public Box(int width, int height)

    {

        Width = width;

        Height = height;

    }

    public void Deconstruct(out int width, out int height)

    {

        width = this.Width;

        height = this.Height;

    }

​

    public void Deconstruct(out int width, out int height, out Box box)

    {

        width = this.Width;

        height = this.Height;

        box = new Box(width / 2, height / 2); // 內盒是外盒的一半大小

    }

}

​

​