simple lambda expressions

using System;

namespace test
{
    class Program
    {
        static void Main(string[] args)
        {
            Func<bool, int> del = x => x ? 10 : 5;
            new ShoppingCart().Process(del);

            // can also be
            //new ShoppingCart().Process(x => x ? 10 : 5); 

            // can also be
            //new ShoppingCart().Process(
            //x =>
            //{
            //    int discount = 0;
            //    if( x )
            //    {
            //        discount = 20;
            //    }
            //    else if (DateTime.Now.Hour < 12)
            //    {
            //        discount = 5;
            //    }
            //    else if (DateTime.Now.Hour < 20)
            //    {
            //        discount = 10;
            //    }
            //    else
            //    {
            //        discount = 15;
            //    }
            //    return discount;
            //}); 
        } 
    }

    class ShoppingCart
    {
        public void Process(Func<bool, int> discount)
        {
            int magicDiscount = discount(false);
            int magicDiscount2 = discount(true);
            Console.WriteLine(magicDiscount);
            Console.WriteLine(magicDiscount2);
            Console.ReadLine();
        }
    }
}