如何根据我提供的输入在Swift中打开枚举?[已关闭]

使用原始值支持的枚举:

enum WeightType: String {
    case barbell
    case kettlebell
    case dumbbell

    var weightLimit: Double {
        switch self {
        case .barbell: return 132.0
        case .kettlebell: return 70.5
        case .dumbbell: return 115.0
        default: return 0
        }
    }
}

示例:

let str = "kettlebell"
if let weightType = WeightType(rawValue: str) {
    print(weightType.weightLimit)
} else {
    print("You provided the wrong rawValue")
}