Good Good Study, Day Day Up
If you want to improve your English abilities, especially writing skills, let's work together!
正文
Association is the ability to send messages from one instance to another. Aggregation is a part-whole relationship and is exactly the same as association except it doesn't allow a part to contain its whole. Composition is exactly like aggregation except that the lifetime of the 'part' is controlled by the 'whole'.
評論
目前還沒有任何評論
登錄後才可評論.
