gistfile1.txt

using System;

public class Singleton<T> where T : class, new()
{
    // The single instance of the type T
    private static readonly Lazy<T> instance = new(() => new T());

    // The private constructor to prevent outside instantiation
    public Singleton() { }

    // The public property to get the instance of the type T
    public static T Instance
    {
        get { return instance.Value; }
    }
}