You have a helping function that is not a member of your class.You want your class member functions to be able to see it and use it but no other file in your program may see it.You can place it in an unnamed namespace to make it invisible from outside the file.

Question

Quizplus · Accepted Answer

Placing the helping function in an unnamed namespace makes it invisible from outside the file, but still visible to functions in the same file, including member functions of the class.

You Have a Helping Function That Is Not a Member