boost::bind with protected members & context

Question

In the below code, there are two \"equivalent\" calls to std::for_each using boost:bind expressions. The indicated line compiles, the indicated fai

Answer 1

Actually, this seems logical. Inheritance gives you access to Derived::foo and not to Base::foo. Let me illustrate with a code example:

struct Derived : public Base
{
    void callPrivateMethod(Base &b)
    {
        // this should obviously fail
        b.foo(5);

        // pointer-to-member call should also fail
        void (Base::*pBaseFoo) (int) = &Base::foo; // the same error as yours here
        (b.*pBaseFoo)(5);
    }
};