truefalse.cs

using System;

struct Vector3
{
	public float X, Y, Z;

	public static bool operator true(Vector3 v)
	{
		return v.X != 0 && v.Y != 0 && v.Z != 0;
	}

	public static bool operator false(Vector3 v)
	{
		return v.X == 0 && v.Y == 0 && v.Z == 0;
	}

	public static bool operator !(Vector3 v)
	{
		return v.X == 0 && v.Y == 0 && v.Z == 0;
	}
}

class Program
{
	static void Main(string[] args)
	{
		var id = new Vector3 { X = 1, Y = 1, Z = 1 };
		var zero = new Vector3();
		
		if (id) Console.WriteLine("id is true");
		if (!zero) Console.WriteLine("zero is false");
	}
}