Question

The situation is like this.

class Interface
{
public:
    virtual void foo() = 0;
}

class MyClass : Interface
{
public:
    virtual void bar() = 0;
private:
    void foo()
    {
        //Some private work and checks.
        bar();
    };
}

I want that my user will create a class which inherit from MyClass, and they will have to implement there bar().
But how can I enfoce they wouldn’t override foo()? because it’s important to me to use my foo().

Answer 1

In C++11 you can mark the method as final to prevent it from being overriden:

class MyClass : Interface
{
public:
    virtual void bar() = 0;
private:
    void foo() final
    {
        //Some private work and checks.
        bar();
    };
}