What does it mean that “friendship isn inherited, transitive, or reciprocal”?
Just because I grant you friendship access to me doesn’t automatically grant your kids access to me, doesn’t automatically grant your friends access to me, and doesn’t automatically grant me access to you. • I don’t necessarily trust the kids of my friends. The privileges of friendship aren’t inherited. Derived classes of a friend aren’t necessarily friends. If class Fred declares that class Base is a friend, classes derived from Base don’t have any automatic special access rights to Fred objects. • I don’t necessarily trust the friends of my friends. The privileges of friendship aren’t transitive. A friend of a friend isn’t necessarily a friend. If class Fred declares class Wilma as a friend, and class Wilma declares class Betty as a friend, class Betty doesn’t necessarily have any special access rights to Fred objects. • You don’t necessarily trust me simply because I declare you my friend. The privileges of friendship aren’t reciprocal. If class Fred declares that class Wilma is a f
