using System;

using static System.Console;

public class Program

{

    public static void Main()

    {

        var tuple1 = (0, 1); //Tuple construction using a tuple literal

        (var t1_1, var t1_2) = tuple1; //Deconstruct into new variables. Compiler does a lot of work deconstructing tuples - see IL

        var (t1_3, t1_4) = tuple1; //Another way to deconstruct tuple.

        WriteLine(tuple1);

        WriteLine(t1_1);

        WriteLine(t1_2);

        WriteLine(t1_3);

        WriteLine(t1_4);

        //Of course, temp variables are used behind the scenes. Named tuple members

        (int first, int second) swap ((int first, int second) input)

        {

            return (input.second, input.first);

            //We can also access tuple input by existing .Item1 and .Item2 if not named.

            //return (input.Item1, input.Item2)

        }

        int first;

        int second;

        WriteLine(swap(tuple1));

        (first, second) = swap(tuple1); //deconstruction into existing variables

        WriteLine(first);

        WriteLine(second);

        var swappedTuple1 = swap(tuple1); //Tuple with named members

        WriteLine(swappedTuple1.first);

        WriteLine(swappedTuple1.second);

        var (name, count) = new Deconstructable();

        WriteLine(name);

        WriteLine(count);

    }

    class Deconstructable

    {

        //Special method called "Deconstruct"

        public void Deconstruct(out string name, out int count)

        {

            name = "ExampleName";

            count = 42;

        }

    }

}