小编Blu*_*Guy的帖子

当前从长嵌套枚举中提取数据的实现似乎非常乏味，并且维护这种结构很费力。下面是我所拥有的一个实现示例，只是想要一些输入，这是否真的是从这些枚举中提取数据的正确方法

import UIKit
import Foundation

enum HousingType {
    case House(HousingSubType)
    case Apartment(HousingSubType)
    case Mansion(HousingSubType)

    enum HousingSubType: CaseIterable {
        case Victorian
        case Modern
        case Standard
    }

    var name: String {
        switch self {
        case let .House(subtype):
            switch subtype {
            case .Modern:
                return Structure.House.Modern.name
            case .Standard:
                return Structure.House.Standard.name
            case .Victorian:
                return Structure.House.Victorian.name
            }
        case let .Apartment(subtype):
            switch subtype {
            case .Modern:
                return Structure.Apartment.Modern.name
            case .Standard:
                return Structure.Apartment.Standard.name
            case .Victorian:
                return Structure.Apartment.Victorian.name
            }
        case let .Mansion(subtype):
            switch subtype {
            case .Modern:
                return Structure.Mansion.Modern.name …