Swift 20-nested Types

Nested Types Just for the convenience of type integration and use

2. struct BlackjackCard {
6. // nested Suit enumeration
8. enum Suit: Character {
10. case spades = "?", hearts = "?", diamonds = "?", clubs = "?"
12. }
16. // nested Rank enumeration
18. enum Rank: Int {
20. case two = 2, three, four, five, six, seven, eight, nine, ten
22. case jack, queen, king, ace
24. struct Values {
26. let first: Int, second: Int?
28. }
30. var values: Values {
32. switch self {
34. case .ace:
36. return Values(first: 1, second: 11)
38. case .jack, .queen, .king:
40. return Values(first: 10, second: nil)
42. default:
44. return Values(first: self.rawValue, second: nil)
46. }
48. }
50. }
54. // BlackjackCard properties and methods
56. let rank: Rank, suit: Suit
58. var description: String {
60. var output = "suit is \(suit.rawValue),"
62. output += " value is \(rank.values.first)"
64. if let second = rank.values.second {
66. output += " or \(second)"
68. }
70. return output
72. }
74. }

1. let theAceOfSpades = BlackjackCard(rank: .ace, suit: .spades)
2. print("theAceOfSpades: \(theAceOfSpades.description)")
3. // Prints "theAceOfSpades: suit is ?, value is 1 or 11"

Swift 20-nested Types