lambda expression和lambda methods

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace TestMod
{
    public class Program
    {
        static void Main(string[] args)
        {
            /*
             * Lambda expressions look just like lambda methods-the syntax is idential-
             * but during compilation they aren't converted into anonymous delegates. 
             * Instread, they're embedded in the assembly as data, not code, 
             * called an abstract syntax tree(AST). Here's an example:
             * */
            //Func<int, int, int> add = (a , b) => { /* a++; b++; */ return a + b; };     //法1：匿名委托
            Func<int, int, int> add = (a, b) => a + b;                //法2：简便lambda method            
            int ress = add(1, 2);
            Console.WriteLine(ress);

            //this is a Lambda expression, and is compiled to *data* (AST)
            System.Linq.Expressions.Expression<Func<int, int, int> > express = (a, b) => a + b;
            int result = express.Compile()(3, 4);
            Console.WriteLine(result);        
            //-------------------lambda表达式示例1 begin--------------------
            //string[] names = {"Dannis wu","Spark John","jj","gugu" };
            //IEnumerable<string> eStrs= names.Where(s => s.EndsWith("u"));           
            //foreach (var item in eStrs)
            //{
            //    Console.WriteLine(item);
            //}
            //-------------------lambda表达式示例1 end--------------------

            //Console.WriteLine(-99 % -100);   //结果为-99, (n%p)模的结果正负,与n有关，与p无关
            Console.ReadKey();
        }
    }
}