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V2EX  ›  C++

C++有没有类似 Java 的 final class

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  •   QBugHunter · Oct 21, 2020 · 2548 views
    This topic created in 2051 days ago, the information mentioned may be changed or developed.
    RT
    我有一个类,不希望被继承,因此我希望,如果有人继承这个类的话,编译器能在编译阶段直接报错,请问 C 艹能不能实现这项功能?
    3 replies    2020-10-21 16:31:21 +08:00
    codehz
        1
    codehz  
       Oct 21, 2020
    有,只不过 final 关键字要加在类名的后面(
    https://en.cppreference.com/w/cpp/language/final
    QBugHunter
        2
    QBugHunter  
    OP
       Oct 21, 2020
    @codehz
    谢谢
    opensail
        3
    opensail  
       Oct 21, 2020
    class A final{ /*将类标记为 final,禁止继承该类*/
    public:
    virtual void func() final; /*使用 final 关键字修饰虚函数,禁止该虚函数重写*/
    };
    class B : public A {
    public:
    virtual void func() override;
    };
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