namespace 匿名函數
{
    /// <summary>
    /// 語法之進化論
    /// </summary>
    class Program
    {
        delegate bool MetherdDeleget(string pStr);
        static void Main(string[] args)
        {
            //m指向匿名函數 delegate(參數列表) {方法體 };
            MetherdDeleget m = delegate(string s) { Console.WriteLine(s); return
 
 false; };
            m("匿名函數");
            //lambda
            MetherdDeleget m1 = (s) => { Console.WriteLine(s); return false; };
            m("lambda");
            //進一步1：
            MetherdDeleget m2 = (s) => {  return s=="tom"; };
            Console.WriteLine(m2("tom"));
            
 
//當方法體只有一句話，且有返回值時,寫法上可以進一步簡化：
            //甚至如果只有一個參數的話() 也不必寫
            MetherdDeleget m3 = (s) => s == "tom";
            Console.WriteLine(m3("tom"));
            //////////list的復雜類型排序///////////////////
            List<Person> plist = new List<Person>();
            plist.Add(new Person() { Name = "tom
 
", Age = 20 });
            plist.Add(new Person() { Name = "jim", Age = 25 });
            plist.Add(new Person() { Name = "aaa", Age = 10 });
            plist.Add(new Person() { Name = "bbb", Age = 35 });
            plist.Add(new Person() { Name = "ccc", Age = 50 });
            plist.Add(new Person() { Name = "ddd", Age = 15 });
            foreach(Person eachp in plist.OrderBy(p=>p.Age))
            {
                Console.WriteLine("名字：{0} 年齡：{1}",eachp.Name,eachp.Age);
            }
            foreach (Person eachp in plist.OrderByDescending(p => p.Age))
            {
                Console.WriteLine("名字：{0} 年齡：{1}", eachp.Name, eachp.Age);
            }


            Console.ReadKey();
        }
        
    }
    class Person
    {
        public string Name { set; get; }
        public int Age { set; get; }
    }
}

轉至 楊中科教程

語法之進化論之lambda表達式