Adjectival.swift

enum Adjectival: Printable {
    case Diff, VeryDifficult, Severe, HardSevere, VerySevere, HardVerySevere, Extreme(level: Int), Error
    var description: String {
        switch self {
        case Diff:
            return "D"
        case VeryDifficult:
            return "VDiff"
        case Severe:
            return "S"
        case HardSevere:
            return "HS"
        case VerySevere:
            return "VS"
        case HardVerySevere:
            return "HVS"
        case let Extreme(level):
            return "E\(level)"
        default:
            return "Bad grade"
        }
    }
}