An obvious singleton implementation for .NET?

Question

I was thinking about the classic issue of lazy singleton initialization - the whole matter of the inefficiency of:

if (instance == null)
{
    instance = new         


        

Answer 1

The best method I have found of creating a singleton is this:

public class Singleton
{
    static public Singleton Instance { get; } = new Singleton();
    private Singleton() { ... }
}

It is very concise, and more importantly, is also thread safe, which can be very troublesome to detect and fix as an application matures.

---

Update: To show it is lazy...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SingletonTest
{
    class MySingleton
    {
        static public MySingleton Instance { get; } = new MySingleton();

        private MySingleton() { Console.WriteLine("Created MySingleton"); }

        public void DoSomething() { Console.WriteLine("DoSomething"); }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Starting Main");

            MySingleton.Instance.DoSomething();
        }
    }
}

Output:

Starting Main
Created MySingleton
DoSomething