为什么80%的码农都做不了架构师？>>>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace ConsoleApplication1

{

    public class People

    {

        private int id;



        public int Id

        {

            get { return id; }

            set { id = value; }

        }

        private string name;



        public string Name

        {

            get { return name; }

            set { name = value; }

        }

        private int age;



        public int Age

        {

            get { return age; }

            set { age = value; }

        }

        private Byte sex;



        public Byte Sex

        {

            get { return sex; }

            set { sex = value; }

        }

        private string school;



        public string School

        {

            get { return school; }

            set { school = value; }

        }



    }

    class Program

    {

        static void Main(string[] args)

        {

            List pd = new List();

            for(int i = 0; i < 72000; i++)

            {

                People people = new People();

                people.Id = i;

                people.Sex = 1;

                if(i<36000){

                    people.Age = 23;

                    people.Name= "MJ" + i;

                    people.School="NC";

                }else

                {

                    people.Name= "KD" + i;

                    people.Age = 24;

                    people.School="UCLA";

                }

                pd.Add(people);

            }



            System.DateTime currentTime0 = System.DateTime.Now;

            foreach (People p in pd)

            {

                p.Id += 1;

                p.Name = "aaa";

                p.Age = 40;

                p.Sex = 1;

                Console.WriteLine(p.Id + ", " + p.Name + ", " + p.School);

            }

            System.DateTime currentTime1 = System.DateTime.Now;

            Parallel.ForEach(pd, p =>

            {

                p.Id += 1;

                p.Name = "bbb";

                p.Age = 35;

                p.Sex =0;

                Console.WriteLine(p.Id + ", " + p.Name + ", " + p.School);

            });

            System.DateTime currentTime2 = System.DateTime.Now;



            Console.WriteLine(currentTime0.ToString() + " " + currentTime0.Millisecond.ToString());

            Console.WriteLine(currentTime1.ToString() + " " + currentTime1.Millisecond.ToString());

            Console.WriteLine(currentTime2.ToString() + " " + currentTime2.Millisecond.ToString());

            Console.ReadKey();

        }

    }

}

输出过程中，明显看到第二个循环比第一个快了很多很多，但是看最后的时间差却失望了：

2014/08/29 15:37:50 401

2014/08/29 15:37:59 246

2014/08/29 15:38:08 185

转载于:https://my.oschina.net/mj23/blog/308043