Thread: operator->(), making one object look like another

Why can't I do this? It's used in this example: http://www.parashift.com/c++-faq-lit...html#faq-16.21 Or am I missing the point in overloading operator->?

Code:

struct a
{
	a() : one(1), two(2) {};
	int one;
	int two;
};

class b
{
public:
	b() {};
	a operator->() { return m_a; }
private:
	a m_a;
};

int main()
{
	b myb;

	cout << myb->one;
	return 0;
}