为什么在System.Object中定义的MemberwiseClone受保护？ [英] Why is MemberwiseClone defined in System.Object protected?

问题描述

我想知道为什么MemberwiseClone被定义为受保护的。这意味着只有派生类型才能访问它。

I'm wondering why MemberwiseClone is defined as protected. This means that only derived types can access it. What is the problem if it was defined as public?

推荐答案

• 很多事情没道理被克隆；与非托管句柄相关的任何内容，例如


• 大多数对象不需要克隆工具


• 深度复制如果您不涉及一些简单的案例，那么适当的事情真的很难


• 在许多情况下，比起盲人克隆，隐喻更好


• 向需要它的类型中手动添加克隆工具 非常简单


• A lot of things don't make sense to be cloned; anything that talks to an unmanaged handle, for example
• Most objects do not need a clone facility
• Deep-copying something properly is really hard if you go outside of a few simple cases
• In many cases, there are better metaphors than blind clones
• Manually adding a clone facility to your types that need it is trivially easy

那么，对我来说，默认情况下应该 不 将其添加到公共API中是很容易的事。

To me, then, it is a no-brainer that this should not be added to the public API by default.

这篇关于为什么在System.Object中定义的MemberwiseClone受保护？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！