AppleCEO

enum Stage: String {
    case production
    case staging
    case dev
    case local
    init?(rawValue: String) {
       switch rawValue.lowercased() {
          case "prod", "production": self = .production
          case "qa", "staging": self = .staging
          case "dev": self = .dev

AppleCEO

enum Stage: String {
    case production = "prod"
    case staging
    case dev
    case local
}
let stage = Stage.production
let params = ["stage" : stage.rawValue] // ["stage": "prod"]

AppleCEO

let stage = Stage.production
let params = ["stage" : stage.rawValue] // ["stage": "production"]

AppleCEO

enum Stage: String {
    case production
    case staging
    case dev
    case local
}

AppleCEO

enum Game {
   case singlePlayer(SinglePlayerGame)
   case multiPlayer(MultiPlayerGame)
   case ai(AIGame)
} 
let aiGame = ...
let game = Game.ai(aiGame)

AppleCEO

struct SinglePlayerGame {
   let id: String
   let numOfPlayers: Int
   let weaponsCollected: [String]
}

AppleCEO

enum DateType {
   case concrete(Date)
   case range(Range<Date>)
}

AppleCEO

let data: [Any] = [Date(), "string", 123]
for elem: Any in data {
  switch elem {
     case let stringVal as String: // handle string
     case let intVal as Int: // handle integer
     case let dateVal as Date: // handle date
     default: // handle others
  }
}

AppleCEO

func logEvent(event: AnalyticsEvent) {
   switch event {
      case .sendFeedback(_: String, content: String): 
          print("\(content)")
      // rest of the cases
}
if case let AnalyticsEvent.sendFeedback(_, content) = event {
   print("\(content)")
}

AppleCEO

let feedbackEvent = AnalyticsEvent.sendFeedback(userId: "id", content: "content")