EnumのRawValueで好きな型を使いたい

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1. EnumͷRawValueͰ޷͖ͳܕ Λ࢖͍͍ͨ
2. ࣗݾ঺հ ▸ ௕୩઒ɹॠ࠸ ▸ Twitterɿ@shunkun_san ▸ GitHubɿ@hmhmsh ▸ ݴޠɿSwiftɾObjective-CɾJava ▸ ࠷ۙͷग़དྷࣄɿՖค঱ͱ൑໌
3. ςΩετ ͖͔͚ͬ ▸ ʮSwiftͷྻڍܕ͕ڧ͍ʯͱ͍͏ͷ͕࿩୊ʹ্͕͍ͬͯΔ ʢΒ͍͠ʁʣ ▸ ྻڍܕͷԿ͕ڧ͍͔ ▸ Raw Valueͱ͍͏ػೳͳͷ͔ ▸ Associated Valueͱ͍͏ػೳͳͷ͔
4. Enum Enumʢྻڍܕʣ enum CompassPoint { case north case south case east case west } let south = CompassPoint.south
5. Raw Value
6. Enum > Raw Value Raw Value ‣ έʔεʹରԠͨ͠஋Λ࣋ͨͤΒΕΔ ‣ ஋ͷܕ͸શͯಉ͡ ‣ ஋ͷܕ ‣ จࣈྻϦςϥϧɿCharacterܕɾStringܕ ‣ ਺஋ϦςϥϧɿIntܕɾDoubleܕ
7. Raw Value enum CompassPoint: String { case north case south case east case west } let south = CompassPoint.south.rawValue // "south" Enum > Raw Value
8. Raw Value ▸ Raw ValueʹࢦఆͰ͖Δܕ͸ܾ·͍ͬͯͨ ‣ จࣈྻϦςϥϧɿCharacterܕɾStringܕ ‣ ਺஋ϦςϥϧɿIntܕɾDoubleܕ ‣ Raw Valueͷܕͱͯ͠޷͖ͳܕΛ࢖༻͍ͨ͠ Enum > Raw Value
9. EnumΛRawRepresentableʹ
 ४ڌͤͯ͞Έͨ
10. RawRepresentable public protocol RawRepresentable { associatedtype RawValue public init?(rawValue: Self.RawValue) public var rawValue: Self.RawValue { get } } Enum > Raw Value
11. RawRepresentable ▸ associatedtype RawValueʹ੍໿͕ͳ͍ ▸ ੍໿ɿprotocol४ڌͳͲ ▸ ޷͖ͳܕΛRawValueʹೖΕΔ ▸ ࣗ࡞structΛRaw Valueͱͯ͠࢖ͬͯΈΑ͏ Enum > Raw Value
12. Custom Raw Value // ੠༏ struct RadioActor { let name: String } Enum > Raw Value
13. Custom Raw Value struct RadioActor { let name: String } enum Popteamepic { case Popuko case Pipimi } Enum > Raw Value
14. Custom Raw Value struct RadioActor { let name: String } enum Popteamepic { case Popuko case Pipimi } extension Popteamepic: RawRepresentable { typealias RawValue = RadioActor Enum > Raw Value
15. Custom Raw Value struct RadioActor { let name: String } enum Popteamepic { case Popuko case Pipimi } extension Popteamepic: RawRepresentable { typealias RawValue = RadioActor var rawValue: RadioActor { switch self { case .Popuko: return RadioActor(name: "ߐݪਖ਼࢜") case .Pipimi: return RadioActor(name: "େ௩๕஧") } } Enum > Raw Value
16. Custom Raw Value struct RadioActor { let name: String } enum Popteamepic { case Popuko case Pipimi } extension Popteamepic: RawRepresentable { typealias RawValue = RadioActor var rawValue: RadioActor { switch self { case .Popuko: return RadioActor(name: "ߐݪਖ਼࢜") case .Pipimi: return RadioActor(name: "େ௩๕஧") } } init?(rawValue: RadioActor) { switch rawValue.name { case "ߐݪਖ਼࢜": self = .Popuko case "େ௩๕஧": self = .Pipimi default: return nil } } } Enum > Raw Value
17. Custom Raw Value let popuko = Popteamepic.Popuko.rawValue // RadioActor let name = popuko.name // "ߐݪਖ਼࢜" let radioActor = RadioActor(name: "େ௩๕஧") let pipimi = Popteamepic(rawValue: radioActor) // Popteamepic.Pipimi Enum > Raw Value
18. Ͱ͖ͨ
19. ςΩετ ·ͱΊ ▸ Enum > Raw Value ▸ จࣈྻɾ਺ࣈϦςϥϧ͕࢖༻Մೳ ▸ EnumΛRawRepresentableʹ४ڌͤ͞Δ ▸ ࣗ࡞Ϋϥεɾߏ଄ମ΋࢖༻͢Δ͜ͱ͕Ͱ͖Δ
20. Custom Raw Value
 ࢖͍Ͳ͜Ζ͕Θ͔Βͳ͍

21. Thank you for listening