c# in deep 之Lambda表达式

　　从很多方面，Lambda表达式都可以看作是C# 2的匿名方法的一种演变。匿名方法能做的几乎一切事情都可以用Lambda表达式来完成，而且其更简洁、易读。下面是一个简单例子。

　　class Film
    {
        public string Name { get; set; }
        public int Year { get; set; }
    }
    class Program
    {
        static void Main()
        {
            var films = new List<Film>
            {
                new Film { Name = "Jaws", Year = 1975 },
                new Film { Name = "Sing in the Rain", Year = 1952 },
                new Film { Name = "Some Like it Hot", Year = 1959 },
                new Film { Name = "The Wizard of oz", Year = 1939 },
                new Film { Name = "It's a Wonderful Life", Year = 1946 },
                new Film { Name = "American Beauty", Year = 1999 },
                new Film { Name = "High Fidelity", Year = 2000 },
                new Film { Name = "The Usual Suspects", Year = 1995 }
            };
            Action<Film> print =　　　　//创建可重用的列表打印委托
                film => Console.WriteLine("Name={0},Year={1}", film.Name, film.Year);
            films.ForEach(print);　　　　//打印原始列表
            Console.WriteLine("---------------------------------------");

films.FindAll(film => film.Year < 1960).ForEach(print);
            Console.WriteLine("---------------------------------------");

films.Sort((f1, f2) => f1.Name.CompareTo(f2.Name));
            films.ForEach(print);
            Console.WriteLine("---------------------------------------");

Console.ReadKey();
        }
    }