swift - 在集合上使用 Switch 语句 (Swift 3)

Question

enum RepeatDay : String, CustomStringConvertible {
    case Monday = "Monday"
    case Tuesday = "Tuesday"
    case Wednesday = "Wednesday"
    case Thursday = "Thursday"
    case Friday = "Friday"
    case Saturday = "Saturday"
    case Sunday = "Sunday"

    var description : String { return rawValue }

    static let allValues = [Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday]
}

以上是在我的模型中声明的。这与设置闹钟时在股票时钟应用程序中选择日期类似的用例类似。

但是下面的提示!!

            guard let repeatDay = $0 else { return "" }
            switch repeatDay {
            case .Monday :
                break
            default:
                break
            }

其中 repeatDay 是一个 Set，如上面的屏幕截图所示。

在这种情况下有没有办法使用 switch 语句？欢迎任何替代方案。

Answer 1

试试这个

guard let repeatDay = RepeatDay(rawValue: $0) else { return "" }
    switch repeatDay {
    case .Monday :
        break
    default:
        break
    }