有没有办法防止一个方法在子类中重写？ [英] Is there a way to prevent a method from being overridden in subclasses?

问题描述

有没有人知道C ++中的一个语言特性或技术，以防止子类在父类中使用特定的方法？

Is anyone aware of a language feature or technique in C++ to prevent a child class from over riding a particular method in the parent class?

class Base {
public:
    bool someGuaranteedResult() { return true; }
};

class Child : public Base {
public:
    bool someGuaranteedResult() { return false; /* Haha I broke things! */ }
};

即使它不是虚拟的，这仍然是允许的（至少在Metrowerks编译器中我使用），你得到的是关于隐藏非虚拟继承函数X的编译时间警告。

Even though it's not virtual, this is still allowed (at least in the Metrowerks compiler I'm using), all you get is a compile time warning about hiding non-virtual inherited function X.

推荐答案

/ p>

A couple of ideas:

1. 将您的函数设为私有。


2. 这实际上不会阻止函数被另一个定义覆盖。

除此之外，我不知道语言特性，将锁定您的函数，以防止它被重载，仍然能够通过指向/引用子类调用。

Other than that, I'm not aware of a language feature that will lock away your function in such a way which prevents it from being overloaded and still able to be invoked through a pointer/reference to the child class.

好运气！

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