[英]Inheriting an Abstract Template Class in C++ while specifying the type
Say I have a template, abstract class: 说我有一个模板,抽象类:
template <class T>
class MyClass {
public:
virtual bool foo(const T a, const T b) = 0;
}
And another class that wants to inherit, while getting rid of the template: 还有一个想要继承的类,同时摆脱了模板:
class MyInheritor : public MyClass<int *> {
public:
bool foo(const int* a, const int* b) { /* stuff */ }
}
The above doesn't let me instantiate MyInheritor, saying it's an abstract class. 上面没有让我实例化MyInheritor,说它是一个抽象类。 How can I override the pure virtual method?
如何覆盖纯虚拟方法?
Because you are not overriding anything here: the const is applied to the int and not to the pointer to int. 因为您在这里没有覆盖任何内容:const应用于int而不应用于int的指针。
Here is the fixed version you probably want: 这是您可能想要的固定版本:
class MyInheritorFixed : public MyClass<int *> {
bool foo(int* const a, int* const b) override { return true; }
};
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