Setting an object's delegate multiple times

If I do object.delegate = self; then in that object's implementation do self.delegate = object;

Does that rewrite the object's delegate or doe开发者_StackOverflow社区s it assign it multiple delegates?

---

If you do object.property = 1, then do object.property = 2, is property equal to both 1 and 2?

It'll rewrite the delegate.