Question

C#里面“等于号大于号”是什么意思

c#代码如下：重点是最后一句！
enum State
{
Open, Closed
}
......
enum Operation
{
Push, Pull
}
......
rule = new Dictionary<State, Dictionary<Operation, Action>>();
......
rule[State.Closed][Operation.Push] = () => { Console.WriteLine("门被推开了"); State = State.Open; };
那个“=>”是什么意思？Linq里的什么？最好有详细的解释~~谢谢

Answer 1

你可以理解成后面的运算依据于前面的参数

Answer 2

lamda表达式
格式：( 形参列表 ) => { 函数体 }
作用：简化匿名方法的书写，可用在任何可使用匿名方法和强类型代理的地方；
例子：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace lamda_expression
{
class Program
{
public delegate string mydelegate(string s);
static void Main(string[] args)
{
mydelegate d1;
d1 = delegate(string myarg) { Console.WriteLine("anonymous method output: {0}", myarg); return "anonymous method done"; };
d1 += ((string myarg) => { Console.WriteLine("lamda expression output: {0}", myarg); return "lamda ok"; });
Console.WriteLine("d1 output: {0}", d1("arg"));
}
}
}

输出：
anonymous method output: arg
lamda expression output: arg
d1 output: lamda ok

Answer 3

lambda 运算符