继承或枚举 [英] Inheritance or enum

问题描述

我必须为应用程序构建新模型，但我没有更好的方法:

I must structure new model for application and I don't what is better:

使用继承或将枚举用作对象类型:

using inheritance or using enum as type of object:

例如:

书籍

class Book
{
public string Name {get;set;}

public string Author {get;set;}

public int NumberOfPages {get;set;}

}

public class Encyclopedie:Book
{

}

public class Novel:Book
{

}

或更好地使用:

class Book
{

public BookType Type {get;set;}

public string Name {get;set;}

public string Author {get;set;}

public int NumberOfPages {get;set;}

}

public enum BookType
{
Encyclopedie = 0,
Novel = 1,
...
}

推荐答案

如果不同类型具有显着差异(如何处理它们和如何对待它们)，请使用继承.也就是说，如果您将要完全使用多态，则应该使用继承.

Use inheritance if the different types have significant differences (how you process them and treat them). That is, if you are going to use polymorphism at all, you should use inheritance.

如果您只需要一种区分不同类型书籍的方法，请使用枚举.

If you only need a way to distinguish different types of books, go with the Enum.

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