非虚拟接口（NVI）成语在C＃中与C ++中有用吗？ [英] Is the Non-Virtual Interface (NVI) idiom as useful in C# as in C++?

问题描述

在C ++中，我经常需要 NVI 获取我的API的一致性不过C＃中我并没有看到它使用的很多。我想知道是不是因为C＃，作为一种语言，提供使NVI不必要的功能？ （我仍然在C＃中使用NVI，虽然在需要的地方）。

In C++, I often needed NVI to get consistency in my APIs. I don't see it used as much among others in C#, though. I wonder if that is because C#, as a language, offers features that makes NVI unnecessary? (I still use NVI in C#, though, where needed.)

推荐答案

我认为解释只是在C＃传统的Java风格的OOP更根深蒂固，NVI与此相反。 C＃有一个真正的接口类型，而NVI依赖于接口实际上是一个基类。这是C ++的完成，所以它自然适合。

I think the explanation is simply that in C#, "traditional" Java-style OOP is much more ingrained, and NVI runs counter to that. C# has a real interface type, whereas NVI relies on the "interface" actually being a base class. That's how it's done in C++ anyway, so it fits naturally there.

在C＃中，它仍然可以完成，它仍然是一个非常有用的成语（更是如此，我会说，而不是正常界面），但它需要忽略内置的语言功能。

In C#, it can still be done, and it is still a very useful idiom (far more so, I'd say, than "normal" interfaces), but it requires you to ignore a built-in language feature.

许多C＃程序员根本不会想到NVI类作为适当的接口。我认为这种精神抵触是C＃中不常见的唯一原因。

Many C# programmers just wouldn't think of a NVI class as being "a proper interface". I think this mental resistance is the only reason why it's less common in C#.

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