这样做的更好方法？ C#中的列表索引分配

Posted 2023-04-12

【中文标题】这样做的更好方法？ C#中的列表索引分配

【英文标题】：Better way of doing this? List index assignment in C#

【发布时间】：2021-01-19 16:57:02

【问题描述】：

所以，这段代码有效。但我觉得我在这里遗漏了一些基本的东西。为列表索引分配一个 int 来访问它们感觉不对。肯定有更好的方法来解决这个问题吗？

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[System.Serializable]

public class ResourceHandler : MonoBehaviour

    //Basic resources setup.
    List<Resource> BasicResources = new List<Resource>();

    // I want to avoid doing this, it seems dumb.
    int Food = 0;
    int Power = 1;
    int Matter = 2;
    int People = 3;
            
    private void Start()
    
        BasicResources.Add(new Resource("Food", 10));
        BasicResources.Add(new Resource("Power", 10));
        BasicResources.Add(new Resource("Matter", 100));
        BasicResources.Add(new Resource("People", 5));

        // This makes sense.
        foreach (Resource resource in BasicResources)
        
            Debug.Log(resource.Type + ", " + resource.Value);
        

        //This works, but seems like a dumb way to do it.
        BasicResources[Food].AddValue(10);
        BasicResources[Power].AddMultiplier(0.25f);
    

【问题讨论】：

您最好使用Dictionary<TKey,TValue> 而不是List<T>。 docs.microsoft.com/en-us/dotnet/api/…

如果你只有这四样东西，而且总是有这四样东西，只需创建一个结构，把这四样东西作为成员。

如果你为这 4 件事硬编码一个 int ，那么看起来你正在做出编译时决定，你不会有任何其他类型的东西，那么你如何让这些成为上课？

【参考方案1】：

您似乎需要一个枚举来说明您试图通过资源类型实现的目标？

...BasicResources.Add(new Resource(ResourceType.Food, 10));

然后通过枚举搜索您的资源 基本资源。首先 (x=> x.Type== ResourceType.Food).AddValue(10)

【参考方案2】：

public enum ResourceType  Food, Power, Matter, People ;

public class Resource

    public ResourceType Type  get; private set; 
    public int Value  get; private set; 

    public Resource(ResourceType type, int value)
    
        Type = type;
        Value = value;
    

    public override string ToString()
     
        return Type + ", " + Value; 
    


using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[System.Serializable]
        
public class ResourceHandler : MonoBehaviour

    //Basic resources setup.
    List<Resource> BasicResources = new List<Resource>();
        
                    
    private void Start()
    
        BasicResources.Add(new Resource(ResourceType.Food, 10));
        BasicResources.Add(new Resource(ResourceType.Power, 10));
        BasicResources.Add(new Resource(ResourceType.Matter, 100));
        BasicResources.Add(new Resource(ResourceType.People, 5));
        
        foreach (Resource resource in BasicResources)
        
            Debug.Log(resource);
        

        //This works, but seems like a dumb way to do it.
        BasicResources[Food].AddValue(10);
        BasicResources[Power].AddMultiplier(0.25f);