using System;

using System.Collections.Generic;

public class Program

{

    static TResult Foo<TResult>(Delegate f, params object[] args)

    {

        object result = f.DynamicInvoke(args);

        return (TResult)Convert.ChangeType(result, typeof(TResult));

    }

    public static void Main()

    {

        // Examples:

        Func<string, int, bool, bool> f1 = (name, age, active) =>

        {

            if (name == "Jon" && age == 40 && active)

            {

                return true;

            }

            return false;

        }; 

        Func<int, int, int, int> f2 = (num1, num2, num3) =>

        {

            return num1 + num2 + num3;

        }; 

        Func<string> f3 = () =>

        {

            return "Hello World";

        }; 

        Console.WriteLine(Foo<bool>(f1,"Jon", 40, true));

        Console.WriteLine(Foo<int>(f2, 1, 2, 3));

        Console.WriteLine(Foo<string>(f3));

    }

}