建造型模式记录

Posted 2020-12-18 liuyang95

建造者模式

建造者模式是将创建和表示进行分离，使得创建的过程中能够创建不同的表示。
据说建造者-指挥者模式已经不是常用了，这里只是学习思想
只要实现了创建和表示分离就好了,流式的配备一台电脑
将电脑的展示和电脑的组成分开

  class Computer
    {
        private Computer(Builder builder)
        {
            HandDisk = builder.handDisk;
            Memroy = builder.memroy;
            MainBoard = builder.mainBoard;
            VideoCard = builder.videoCard;
            PowerSupply = builder.prowerSupply;
            CUP = builder.cUP;
        }
        public string HandDisk { get;  }
        public string Memroy { get;  }
        public string MainBoard { get; }
        public string VideoCard { get;  }
        public string PowerSupply { get; }
        public string CUP { get; }

        public class Builder
        {
            string HandDisk = "西部数据";
            string Memroy = "金士顿";
            string MainBoard = "华硕";
            string VideoCard = "铭影";
            string ProwerSupply = "冷静王";
            string CUP = "AMD";

            public string handDisk { get=> HandDisk; set => HandDisk = value; }
            public string memroy { get => Memroy; set => Memroy = value; }
            public string mainBoard { get => MainBoard; set => MainBoard = value; }
            public string videoCard { get => VideoCard; set => VideoCard = value; }
            public string prowerSupply { get => ProwerSupply; set => ProwerSupply = value; }
            public string cUP { get => CUP; set => CUP = value; }

            public Computer computer() 
            {
                return new Computer(this);
            }
        }

电脑分成硬盘、内存、主板、显卡、电源和cup，他们展示在computer上（只有get，拼装使用构造函数里面是内部类），在这个里面有个内部类是电脑的拼装，
里面是电脑的set/get方法，并且含有默认值。这样将展示和组成分开了。
使用：

   class User
    {
        public void BuyComputer() 
        {
            //默认配置电脑
            Computer computer = new Computer.Builder().computer();
            Console.WriteLine("cup:"+computer.CPU+"...");
            //自定义配置
            Computer.Builder build = new Computer.Builder();
            build.cPU = "intel";
            Computer computer2 = build.computer();
            Console.WriteLine("cup:" + computer2.CPU + "...");
        }

这里的user的自定义配置有些奇怪，意思表达到就好了。。这里应该还能改进的更好