using System;

public static class Tuple
{
	public static Tuple<T1, T2> Create<T1, T2>(T1 item1, T2 second)
	{
		return new Tuple<T1, T2>(item1, second);
	}

	public static Tuple<T1, T2, T3> Create<T1, T2, T3>(T1 item1, T2 second, T3 third)
	{
		return new Tuple<T1, T2, T3>(item1, second, third);
	}

	public static Tuple<T1, T2, T3, T4> Create<T1, T2, T3, T4>(T1 item1, T2 second, T3 third, T4 fourth)
	{
		return new Tuple<T1, T2, T3, T4>(item1, second, third, fourth);
	}

	public static void Unpack<T1, T2>(this Tuple<T1, T2> tuple, out T1 ref1, out T2 ref2)
	{
		ref1 = tuple.Item1;
		ref2 = tuple.Item2;
	}

	public static void Unpack<T1, T2, T3>(this Tuple<T1, T2, T3> tuple, out T1 ref1, out T2 ref2, T3 ref3)
	{
		ref1 = tuple.Item1;
		ref2 = tuple.Item2;
		ref3 = tuple.Item3;
	}

	public static void Unpack<T1, T2, T3, T4>(this Tuple<T1, T2, T3, T4> tuple, out T1 ref1, out T2 ref2, T3 ref3, T4 ref4)
	{
		ref1 = tuple.Item1;
		ref2 = tuple.Item2;
		ref3 = tuple.Item3;
		ref4 = tuple.Item4;
	}
}