C#中λ表达式

using System;

class B

{

public delegate string Make();

public delegate string Reply(string str);

 

 

public static void Main(){

Make  m= A.make;

Reply r = (str => A.reply(str));//λ表达式 现在r(string str)就代表A.reply(string str)

 

 

Console.WriteLine(kk(m));

Console.WriteLine(r("bingo reply"));

 

 

}

 

public static string kk(Make mm){

return mm();

}

}

 

class A

{

public static  string make(){

return "A make";

}

public static string did(){

return "A did";

}

public static string pick(){

return "A pick";

}

public static string reply(string str){

return str;

}

}

=========================================

λ表达式也可以做匿名方法

例如

 

delegate bool Method(int x,int y);

static void Main(){

Method method=(x,y)=>

{

return x>y;

};

 

Console.WriteLine(method(1,2));

}

 

输出 false