所有数组在 C# 中都实现了哪些接口? [英] What interfaces do all arrays implement in C#?

问题描述

作为一个新的 .NET 3.5 程序员，我开始学习 LINQ，我发现了一些我以前没有注意到的非常基本的东西:

As a new .NET 3.5 programmer, I started to learn LINQ and I found something pretty basic that I haven't noticed before:

这本书声称每个数组都实现了 IEnumerable(显然，否则我们无法使用 LINQ 到数组上的对象......).当我看到这个时，我想我从来没有真正想过那个，我问自己所有数组还实现了什么 - 所以我检查了System.Array 使用对象浏览器(因为它是 CLR 中每个数组的基类)，令我惊讶的是，它没有实现 IEnumerable.

The book claims every array implements IEnumerable<T> (obviously, otherwise we couldn't use LINQ to objects on arrays...). When I saw this, I thought to myself that I never really thought about that, and I asked myself what else all arrays implement - so I examined System.Array using the object browser (since it's the base class for every array in the CLR) and, to my surprise, it doesn't implement IEnumerable<T>.

所以我的问题是:定义在哪里?我的意思是，我如何才能准确地知道每个数组实现了哪些接口?

So my question is: where is the definition? I mean, how can I tell exactly which interfaces every array implements?

推荐答案

来自 文档(强调我的):

[...] Array 类实现了 System.Collections.Generic.IList、System.Collections.Generic.ICollection 和System.Collections.Generic.IEnumerable 通用接口.实现在运行时提供给数组，因此对文档构建工具不可见.

[...] the Array class implements the System.Collections.Generic.IList<T>, System.Collections.Generic.ICollection<T>, and System.Collections.Generic.IEnumerable<T> generic interfaces. The implementations are provided to arrays at run time, and therefore are not visible to the documentation build tools.

正如 Jb Evain 在他的评论中指出的那样，只有向量(一维数组)实现了通用接口.至于为什么多维数组不实现泛型接口，我不太确定，因为它们确实实现了非泛型对应物(参见下面的类声明).

as Jb Evain points out in his comment, only vectors (one-dimensional arrays) implement the generic interfaces. As to why multi-dimensional arrays don't implement the generic interfaces, I'm not quite sure since they do implement the non-generic counterparts (see the class declaration below).

System.Array 类(即 every 数组)也实现了这些非通用接口:

The System.Array class (i.e. every array) also implements these non-generic interfaces:

public abstract class Array : ICloneable, IList, ICollection, IEnumerable, IStructuralComparable, IStructuralEquatable

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