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Matching Optional


enum Occupation: String {
  case AppSo = "app"
  case Number = "number"

let typeString = "mindStore"

switch Occupation(rawValue: typeString) {

  case .AppSo?:
    print("AppSo Article")

  case .Number?:
    print("Number Article")

  case nil:

抽取于:Matching with Swift's Optional Pattern

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