Swift3.0 - 空间命名

struct MyClassContrainer1{
    class Student {
        func getName() -> String {
            return "name"
        }
    }
}
struct MyClassContrainer2{
    class Student {
        func getName() -> String {
            return "name"
        }
    }
}

let student1 = MyClassContrainer1.Student()
let student2 = MyClassContrainer1.Student()

 NotificationCenter.default.post(name: Notification.Name("SocketConnectFailure"), object: ["errorCode":000])

NotificationCenter.default.addObserver(self, selector: #selector(SocketConnectFailure(notification:)), name: Notification.Name("SocketConnectFailure"), object: nil)

extension Notification.Name {
    /// 使用命名空间的方式
    public struct SocketTask {
        public static let connectFailure = Notification.Name(rawValue: "SocketConnectFailure")
        public static let connectSuccess = Notification.Name(rawValue: "SocketConnectSuccess")
  }
}

//   想通知中心post 消息
 NotificationCenter.default.post(name: Notification.Name.SocketTask.connectFailure, object: ["errorCode":000])
//   增加观察者
NotificationCenter.default.addObserver(self, selector: #selector(SocketConnectFailure(notification:)), name: Notification.Name.SocketTask.connectFailure, object: nil)