twl@cs.brown.edu (Ted "Theodore" W. Leung) (03/20/91)
I have a question about friend functions. I have an application where
I am simulating a company, where all the employees have a to do list.
The only person that can reprioritize an employee's to do list is his
manager. I am trying to restrict access to the to-do list to the
particular employee subclass and by allowing the manager to have a
friend function which can access the representation of the to-do list.
I have not been able to get my code to work with a friend function. I
have been able to get it to work by declaring Manager as a friend
class, but this seems excessive to me. Can someone show me what I am
overlooking or explain why a friend function is illegal here
A skeletal version of the code as I think it should appear follows below....
class ToDoList {
friend Boolean Manager::Reprioritize(Bug& item, int priority);
private:
ThingList *things;
};
class InternalPerson {
private:
ToDoList ToDo;
};
class Manager : public InternalPerson {
public:
Boolean Reprioritize(Bug& item, int priority); // needs to look at ToDoList
};
Thanks in advance,
Ted
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