OperatorsSample/Vector2 struct

Vector2.cs

namespace OperatorsLib.Structs
{
	public struct Vector2
	{
		public double X { get; }
		public double Y { get; }

		public Vector2(double x, double y) => (X, Y) = (x, y);
		public void Deconstruct(out double x, out double y) => (x, y) = (X, Y);

		public static implicit operator Vector2((double x, double y) v) => new Vector2(v.x, v.y);
		public static explicit operator (double, double)(Vector2 v) => (v.X, v.Y);
	}
}

Vector2Test.cs

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using OperatorsLib.Structs;

namespace UnitTest.Structs
{
	[TestClass]
	public class Vector2Test
	{
		[TestMethod]
		public void Cast()
		{
			Vector2 v = (3, 4);
			var (a, b) = v;
			var t = ((double c, double d))v;

			Assert.AreEqual(v, (a, b));
			Assert.AreEqual(v, t);
			Assert.AreEqual((v.X, v.Y), (t.c, t.d));
		}
	}
}