删除复制代码&复制分配-是公共的，私人的还是受保护的？ [英] Deletion of copy-ctor & copy-assignment - public, private or protected?

问题描述

为了使对象不可复制，我们可以显式删除其复制构造函数和复制赋值运算符。

In order to make an object non-copiable we can explicitly delete both its copy-constructor and copy-assignment operator.

我的问题是：什么是正确的地方-在公众，私有或受保护的部分？而且-这个选择有什么区别吗？

My question is: What is the right place to do it - in the public, private or protected section of the class? And - does this choice make any difference?

推荐答案

在哪里做的正确选择-在该类的公共，私人或受保护的部分？

what is the right place to do it - in the public, private or protected section of the class?

我会将它们放入 public 部分。

I would put them in the public section.

这是因为删除构造函数或赋值运算符与使它们成为 private / 受保护的；并且在不删除它们的情况下，它们默认为公开。在我看来，将删除内容放在这两个部分之一中似乎暗示着如果我不删除它们，我会将它们设为私有/受保护的，这不是您要传达的信息。

This is because deleting a constructor or an assignment operator is orthogonal to making them private / protected; and when these aren't deleted, they are public by default. Putting the deletions in one of those two sections seems to me like hinting "If I hadn't deleted them, I would have made them private/protected" - which is not a message you want to convey in your case.

不过，请注意，编译器不在乎将删除内容放入哪个部分。

Note, though, that the compiler doesn't care which section you put the deletion in.

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