enum 조금더 잘사용해보기 -> 배열처럼 사용해보자
CaseIterable 이용해서 case가 많아지는경우에도 배열처럼 쉽게 사용가능
enum Device: CaseIterable {
case iPhone4, iPhone5,iPhone6,iPhone7, iPhone8, iPhoneX, iPhone11, iPhone12, iPhone13
}
print("There are \(Device.allCases.count) Divices")
let deviceList = Device.allCases.map({ "\($0)"}).joined(separator:",")
print(deviceList)
enum Series..