using System;

public delegate T Supplier<T>();

​

public class Program

{

    public static void Main()

    {

        var funcSupplier = () => "sekrit";

        Console.WriteLine(funcSupplier());

        var supplier = () => "secret";

        Console.WriteLine(supplier());

        supplier = Secret;

        Console.WriteLine(supplier());

    }

    static string Secret()

    {

        return "A really secret message";

    }

}