Class member functions static and private

Question

Does it make sense to have some class member function say f() both private and static? e.g.

class MyClass
{
 ...
private:

static int foo();
}

Thanks.

Hi thanks for all your comments! Ok, I got it. Yes, indeed initially I started using static functions in my class because they were not related to the objects of my class- were doing some other operations. Now I also realized they needn't be public. So, I think I'll leave them like this. I started to get some errors when I removed static keyword (apparently due to the way it was used throughout class, so I am lazy now to fix those, will just make it private and leave static :)).

Answer 1

Yes. For example: private static member functions used for initialization or other purposes.

See this post for more information: What is the use of private static member functions?

Answer 2

Sure, sometimes. For example, utility functions used by the public static methods of the same class.

Answer 3

Yes, having a static private member function makes sense. It might, for example, be a stateless utility function used only by other members of the same class.

No, your class does not make sense. Since MyClass has no other members, no entity can ever see your MyClass::foo.

Answer 4

Absolutely! Imagine a class that is purely static such as a statistical functions class. Helper functions may be private and static.

Answer 5

of course. You might use it for internal purposes of your class, in private functions i.e.

class A{
    public:
        static int i_;
private:
    void privatef(){hiden_i_++;}
    static int hiden_i_;
};