【swift-總結】枚舉

標籤：

聲明枚舉

enum Direction {    case North    case East    case West    case South}

也可以使用一個case

enum Direct {    case North, East, South}

使用枚舉

var dirct = Direction.Eastdirct = .West

相關值

可以使用枚舉儲存任何相關指

enum PersonInfo {    case Age(Int)    case Name(String)}

var person = PersonInfo.Name("ttf")switch person {case .Age(let age)://獲得這個值    print("person‘s age is \(age)")case .Name(let name):    print("person‘name is \(name)")}

有初始值的枚舉

/**以字元為初始值的枚舉*/enum DirWithChar: Character {    case North = "\t"    case West = "\n"    case East = "\0"    case South = "\r"}

/**以Int為初始值的枚舉*/enum DirWithInt: Int {    case North = 0    case West    case East    case South}

獲得初始值

let dirValue = DirWithInt.East.rawValue

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【swift-總結】枚舉