A confusing typedef involves class scope

Question

I\'m reading code of a C++ project and it contains some code of the following form:

namespace ns {
    class A {};
    class B {};
}

struct C {
    typedef ns::         


        

Answer 1

ns::B::*

is a pointer-to-member-variable of B. Then ns::A* is its type.

So the whole declaration means

pointer-to-member-variable of B of type ns::A*