List (of T) 和 Collection(of T) 有什么区别? [英] What is the difference between List (of T) and Collection(of T)?

问题描述

我已经看到它们以很多相同的方式使用，我担心如果我不能更好地理解这一点，我将在设计中走上一条不可逆转的道路.另外，我正在使用 .NET.

I've seen them used in a lot of the same ways, and I am worried I'm about to go down a path in design that is irreversible if I don't understand this better. Also, I am using .NET.

推荐答案

Collection 是一个围绕 IList 的可定制包装器.虽然 IList 不是密封的，但它不提供任何自定义点.Collection 的方法默认委托给标准的 IList 方法，但可以很容易地覆盖以执行您想要的操作.还可以在 Collection 中连接事件，我认为 IList 无法完成这些事件.

Collection<T> is a customizable wrapper around IList<T>. While IList<T> is not sealed, it doesn't provide any customization points. Collection<T>'s methods are by default delegated to the standard IList<T> methods, but can be easily overridden to do what you want. It is also possible to wireup events inside a Collection<T> that I don't believe could be done with an IList.

简而言之，事后扩展它要容易得多，这可能意味着更少的重构.

In short, it's much easier to extend it after the fact, which could potentially mean a lot less refactoring.

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