201802181721->深入浅出设计模式:c#享元模式

最新推荐文章于 2024-05-10 11:45:26 发布

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最新推荐文章于 2024-05-10 11:45:26 发布

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分类专栏： unity 文章标签： c# 心得理解笔记

本文链接：https://blog.youkuaiyun.com/qq_28902031/article/details/79334971

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本文介绍享元模式的设计理念与实现方式，通过一个简单的C#示例展示了如何利用享元模式来减少对象创建的数量，从而节省内存资源。文章还探讨了享元模式与对象池之间的联系。

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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _010享元模式
{
/*--------------------------------------------------对象工厂--------------------------------------------------*/

public class FlyWeightFactory
{
public Hashtable container;
private FlyWeight flyWeight;

public FlyWeightFactory()
{
container = new Hashtable();
container.Add("A", new FlyWeightContainer("A"));
container.Add("B", new FlyWeightContainer("B"));
container.Add("C", new FlyWeightContainer("C"));
}

public FlyWeight Get(string key)
{
flyWeight = container[key] as FlyWeight;
if (flyWeight != null)
{
Console.WriteLine("对象不在对象池中...,{0}", key);

return new FlyWeightContainer(key);
}
return flyWeight;
}
}

/*--------------------------------------------------对象工厂--------------------------------------------------*/

/*--------------------------------------------------抽象容器以及具体容器--------------------------------------------------*/

public abstract class FlyWeight
{
public abstract void Operation(int innerstate);
}

public class FlyWeightContainer : FlyWeight
{
private string FlyWeightState;

public FlyWeightContainer(string flyweightstate)
{
FlyWeightState = flyweightstate;
}

public override void Operation(int innerstate)
{
Console.WriteLine(string.Format("具体实现类,{0} : {1}", FlyWeightState, innerstate));
}
}

/*--------------------------------------------------抽象容器以及具体容器--------------------------------------------------*/

internal class Program
{
private static void Main(string[] args)
{
int InnerState = 10;
FlyWeightFactory factory = new FlyWeightFactory();
FlyWeight TempFlyWeight = factory.Get("A");
TempFlyWeight.Operation(--InnerState);
TempFlyWeight = factory.Get("A");
TempFlyWeight.Operation(--InnerState);

/*
*
* 享元模式大致可以看作是unity里边的对象池
*
* 在声明的时候就存入需要取出的对象
*
* 在需要用的时候就取,取不到就新建一个
*
*
*/
Console.ReadKey();
}
}
}