修飾詞(Modifier)

任何類別和屬性都會有修飾詞，修飾詞也有順序

1. 存取修飾詞 (public, private ....)

2. override (繼承才會到)

3. dynamic (串接OC或是KVO才會用到)

4. mutating

5. lazy

6. final

7. static

8. owned (weak, ....)

public class GetMemberDataRequest: AuthRequest {
    
    public override var address: String {
        return "MemberData"
    }
}

存取修飾詞只有internal不寫，其他都要寫 (例如 private, public...)

Delegate一定要接weak (原因請看ARC + Retain Cycle那篇)

protocol DataManagerDelegate{
}

class DataManager{
    weak var delegate: DataManagerDelegate?
}