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using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
namespace ConsoleApp3
{
static class Program
{
delegate string delagateA(string paramA);
static void Main(string[] args)
{
delagateA delagatea = (a) =>
{
return "delegate方式输出：" + a;
};
Console.WriteLine(delagatea("123"));
Func<int, int, int> funcA = (paramA, paramB) => paramA + paramB;
Console.WriteLine("Func方式输出："+funcA(2, 3));
Func<int, int, int> funcB = (paramA, paramB) =>
{
int a = paramA + paramB;
return a;
};
Console.WriteLine("Func方式输出：" + funcB(2, 3));
Action<int, int> actionA = (paramA, paramB) => Console.WriteLine("Action方式输出：" + paramA + paramB);
actionA(3, 5);
Expression<Action<int>> expressionA = paramA => Console.WriteLine("Expression方式输出：" + paramA);
expressionA.Compile()(1);
Expression<Func<int, int>> expressionB = paramA => paramA;
Console.WriteLine("Expression方式输出：" + expressionB.Compile()(1));
myFun("chenyishi", c =>
{
return c;
});
}
static void myFun(string str, Func<string, string> func)
{
Console.WriteLine("Func作为参数方式输出："+func(str));
}
}
}