using System;

public class Program

{

    public static void Main()

    {

        TwoTuple<float> Coords = new TwoTuple<float>(1.1f, 2.2f);

        BarDataPoint test = new BarDataPoint(Coords, 3.3f);

        Console.WriteLine(test);

    }

}

​

public interface ITuple<T>

{

    T X { get; }

​

    string ToString();

}

​

public struct TwoTuple<T> : ITuple<T>

{

    public T X { get; }

    public T Y { get; }

    public TwoTuple(T x, T y)

    {

        X = x;

        Y = y;

    }

​

    public override string ToString()

    {

        return "(" + X + ", " + Y + ")";

    }

}

​

public struct ThreeTuple<T> : ITuple<T>

{

    public T X { get; }

    public T Y { get; }

    public T Z { get; }

    public ThreeTuple(T x, T y, T z)

    {

        X = x;

        Y = y;

        Z = z;

    }

​

    public override string ToString()

    {

        return "(" + X + ", " + Y + ", " + Z + ")";

    }

}

​

public interface IDataPoint<T,T2> where T : ITuple<T2>

{ 

    float Value { get; }

    T Coords { get; }

​

    string ToString();

}

​

public struct BarDataPoint : IDataPoint<TwoTuple<float>,float>

{

    public TwoTuple<float> Coords { get; }

    public float Value { get; }

    public BarDataPoint(TwoTuple<float> Coords, float Value)

    {

        this.Coords = Coords;

        this.Value = Value;

    }

​

    public override string ToString()

    {

        return "Coordinates: " + Coords + "; Value: " + Value;

    }

}