gist to demonstrate c# 7.0's new value tuple syntax for returning multiple values from functions.

20200127-valuetuples.cs

using System;

public struct Vector2 {
    public float x;
    public float y;
    public Vector2(float x, float y) {
        this.x = x;
        this.y = y;
    }
}
public class ReturnMultipleValuesTest {
    
  static void Main() {
    var t = new ReturnMultipleValuesTest();
    t._x = 5f; t._y = 9f;
    Console.WriteLine(string.Format("GetPositionX: {0}", t.GetPositionX()));
    Console.WriteLine(string.Format("GetPositionY: {0}", t.GetPositionY()));
    
    float tmpX, tmpY;
    t.GetPositionWithOutParams(out tmpX, out tmpY);
    Console.WriteLine(string.Format("GetPosition: x:{0} y:{1}", tmpX, tmpY));
    
    Tuple<float, float> tuple = t.GetPositionRefTuple();
    Console.WriteLine(string.Format("GetPositionRefTuple: x:{0} y:{1}", tuple.Item1, tuple.Item2));
    
    (float tX, float tY) = t.GetPositionValueTuple();
    Console.WriteLine(string.Format("GetPositionValueTuple: x:{0} y:{1}", tX, tY));
    
    ValueTuple<float, float> vt = t.GetPositionValueTuple();
    Console.WriteLine(string.Format("GetPositionValueTupleAlternateSyntax: x:{0} y:{1}", vt.Item1, vt.Item2));
  }

  float _x, _y;

  public float GetPositionX() => _x;
  public float GetPositionY() => _y;
  
  public void GetPositionWithOutParams(out float x, out float y) {
    x = _x;
    y = _y;
  }
  
  public Vector2 GetPositionVector() {
    return new Vector2(_x, _y);
  }

  public Tuple<float, float> GetPositionRefTuple() {
    return Tuple.Create(_x, _y);
  }
  
  public ValueTuple<float, float> GetPositionValueTuple() {
    return ValueTuple.Create(_x, _y);
  }
  
  // Is exactly the same as GetPositionVT
  public (float, float) GetPositionValueTupleAlternateSyntax() {
    return (_x, _y);
  }
}