Lambda的前世今生

class Student{
    delegate void Say(string content);
    public void Show()
    {
        //Lambda的前世今生
        //总结:Lambda就是委托的参数
        {
            //匿名委托
            Say say = new Say(delegate(string content)
            {
                Console.WriteLine("xiao ming say hello:"+content);
            });
            say.Invoke("xiaoming");
        }
        {
            //取消new Say,不用单独写实例化代码
            Say say = delegate(string content)
            {
                Console.WriteLine("xiao ming say hello:" + content);
            };
            say.Invoke("xiaoming");
        }
        {
            //取消delegate关键字,并增加 =>
            Say say = (string content)=>
            {
                Console.WriteLine("xiao ming say hello:" + content);
            };
            say.Invoke("xiaoming");
        }
        {
            //取消参数的类型，编译器自动推断，同时一个参数可以取消括号
            Say say = content =>
            {
                Console.WriteLine("xiao ming say hello:" + content);
            };
            say.Invoke("xiaoming");
        }
        {
            //如果只有一行代码，还可以取消大括号，写成一行
            Say say = content =>Console.WriteLine("xiao ming say hello:" + content);
            say.Invoke("xiaoming");
        }
    }
}