iOSレガシーコード改善ガイド〜マンガボックス開発における事例〜

2016/01/29に開催された「DeNA TechCon 2016」での講演資料です。
https://techcon.dena.com

Transcript

1. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   J04ϨΨγʔίʔυվળΨΠυ
   1
   Jan 29, 2016
   দલ݈ଠ࿠
   IPϓϥοτϑΥʔϜࣄۀ෦ୈ̍෦

   DeNA Co., Ltd.
   ʙϚϯΨϘοΫε։ൃʹ͓͚Δࣄྫʙ
   

   View Slide

2. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   ࣗݾ঺հ
   দલ݈ଠ࿠ (id:kenmaz)
   2003.4 ೔ཱιϦϡʔγϣϯζ (چɾ೔ཱιϑτ΢ΣΞΤϯδχΞϦϯάʣ
   SIer, Java, Ruby, ଞ
   2009.6 υϫϯΰ
   χίχίɺଞ
   2013.4 DeNA
   ϚϯΨϘοΫε ϦʔυΤϯδχΞ
   2
   

   View Slide

3. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   3
   

   View Slide

4. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   4
   ϓϩ࡞Ոͷ  
   ඳ͖͓Ζ͠࡞඼͕  
   ຖ೔ߋ৽ɺແྉͰಡΊΔ  
   ϚϯΨࡶࢽΞϓϦ
   

   View Slide

5. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   5
   

   View Slide

6. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   6
   ిࢠॻ੶ετΞ
   ϚϯΨ౤ߘ
   

   View Slide

7. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   ຊ୊
   7
   

   View Slide

8. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   ϨΨγʔίʔυʹ͍ͭͯ
   8
   

   View Slide

9. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
   ϚϯΨϘοΫεʹ͓͚ΔϨΨγʔίʔυ
   •։ൃελʔτ͔Β໿̏೥
   •iOS6࣌୅ͷίʔυଟ਺
   •ػೳ௥Ճʹ൐͏ίʔυͷෳࡶԽ
   •ϨΨγʔίʔυԽͷஹީ
   9
   

   View Slide

10. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ϚϯΨϘοΫεʹ͓͚ΔϨΨγʔίʔυ
    •։ൃελʔτ͔Β໿̏೥
    •iOS6࣌୅ͷίʔυଟ਺
    •ػೳ௥Ճʹ൐͏ίʔυͷෳࡶԽ
    •ϨΨγʔίʔυԽͷஹީ
    9
    iOSϨΨγʔίʔυվળΨΠυ
    ϨΨγʔίʔυԽͤ͞ͳ͍ͨΊͷऔΓ૊Έ
    

    View Slide

11. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶃϦϦʔεαΠΫϧͷݟ௚͠
    ᶄSwift΁ͷҠߦ
    ᶅAutoLayout΁ͷରԠ
    ᶆઃܭ
    ᶇӡ༻ɾϩά
    10
    iOS ϨΨγʔίʔυվળΨΠυ
    

    View Slide

12. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶃϦϦʔεαΠΫϧͷݟ௚͠
    ᶄSwift΁ͷҠߦ
    ᶅAutoLayout΁ͷରԠ
    ᶆઃܭ
    ᶇӡ༻ɾϩά
    10
    iOS ϨΨγʔίʔυվળΨΠυ
    ޙ೔webͰެ։Ͱ͖Ε͹ɾɾɾ
    

    View Slide

13. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Swift΁ͷҠߦ
    11
    iOSϨΨγʔίʔυվળΨΠυ  ͦͷᶄ
    

    View Slide

14. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    12
    h)ps://developer.apple.com/swi7/
    SwiftҠߦͷҙٛ
    

    View Slide

15. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    12
    h)ps://developer.apple.com/swi7/
    SwiftҠߦͷҙٛ
    

    View Slide

16. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    12
    h)ps://developer.apple.com/swi7/
    • Type  Safe  
    • Op• Immutable  
    • Generics
    SwiftҠߦͷҙٛ
    

    View Slide

17. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    12
    h)ps://developer.apple.com/swi7/
    • Type  Safe  
    • Op• Immutable  
    • Generics
    SwiftҠߦͷҙٛ
    ݴޠͷ҆શੑʹΞϓϦͷ඼࣭ʹ௚݁
    

    View Slide

18. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    iOSΤϯδχΞ
    1.5ਓ
    Ͳ͏͢Δ
    13
    

    View Slide

19. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    SwiftҠߦ΁ͷجຊઓུ
    14
    

    View Slide

20. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    SwiftҠߦ΁ͷجຊઓུ
    1. طଘίʔυͷڍಈΛഁյ͠ͳ͍͜ͱ
    14
    

    View Slide

21. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    SwiftҠߦ΁ͷجຊઓུ
    1. طଘίʔυͷڍಈΛഁյ͠ͳ͍͜ͱ
    2. طଘobjcίʔυͷमਖ਼͸ۃྗSwiftͰߦ͏͜ͱ
    14
    

    View Slide

22. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    SwiftҠߦ΁ͷجຊઓུ
    1. طଘίʔυͷڍಈΛഁյ͠ͳ͍͜ͱ
    2. طଘobjcίʔυͷमਖ਼͸ۃྗSwiftͰߦ͏͜ͱ
    3. ஈ֊తʹঃʑʹҠߦ͢͢ΊΔ͜ͱ
    14
    

    View Slide

23. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    SwiftҠߦ΁ͷجຊઓུ
    1. طଘίʔυͷڍಈΛഁյ͠ͳ͍͜ͱ
    2. طଘobjcίʔυͷमਖ਼͸ۃྗSwiftͰߦ͏͜ͱ
    3. ஈ֊తʹঃʑʹҠߦ͢͢ΊΔ͜ͱ
    4. SwiftΒ͍͠ίʔυΛॻ͍࣮ͯ֬ʹ඼࣭ΛߴΊΔ͜ͱ
    14
    

    View Slide

24. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    SwiftҠߦ΁ͷجຊઓུ
    1. طଘίʔυͷڍಈΛഁյ͠ͳ͍͜ͱ
    2. طଘobjcίʔυͷमਖ਼͸ۃྗSwiftͰߦ͏͜ͱ
    3. ஈ֊తʹঃʑʹҠߦ͢͢ΊΔ͜ͱ
    4. SwiftΒ͍͠ίʔυΛॻ͍࣮ͯ֬ʹ඼࣭ΛߴΊΔ͜ͱ
    5. ہॴతͳଥڠ͸ڐ༰
    14
    

    View Slide

25. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    SwiftҠߦ΁ͷجຊઓུ
    1. طଘίʔυͷڍಈΛഁյ͠ͳ͍͜ͱ
    2. طଘobjcίʔυͷमਖ਼͸ۃྗSwiftͰߦ͏͜ͱ
    3. ஈ֊తʹঃʑʹҠߦ͢͢ΊΔ͜ͱ
    4. SwiftΒ͍͠ίʔυΛॻ͍࣮ͯ֬ʹ඼࣭ΛߴΊΔ͜ͱ
    5. ہॴతͳଥڠ͸ڐ༰
    14
    →Mix-and-Match
    

    View Slide

26. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and Match
    ͻͱͭͷϓϩδΣΫτͰObjective-CͱSwiftΛࠞ߹ͯ͠࢖͏ͨΊͷػೳ
    15
    h)ps://developer.apple.com/library/ios/documenta

    View Slide

27. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
    16
    

    View Slide

28. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
    16
    ᶃ Ԇ໋ύλʔϯ
    ᶄ ͝৽نύλʔϯ
    ᶅ ੾Γग़͠ύλʔϯ
    ᶆ ϒϦοδύλʔϯ
    ᶇ extensionύλʔϯ
    ᶈ ๫࿐ύλʔϯ
    ᶉ ৐ͬऔΓύλʔϯ
    ᶊ ࣸܦύλʔϯ
    

    View Slide

29. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
    16
    ᶃ Ԇ໋ύλʔϯ
    ᶄ ͝৽نύλʔϯ
    ᶅ ੾Γग़͠ύλʔϯ
    ᶆ ϒϦοδύλʔϯ
    ᶇ extensionύλʔϯ
    ᶈ ๫࿐ύλʔϯ
    ᶉ ৐ͬऔΓύλʔϯ
    ᶊ ࣸܦύλʔϯ
    ύλʔϯ  ≒  ෢ಓʹ͓͚Δܗ
    

    View Slide

30. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
    16
    ᶃ Ԇ໋ύλʔϯ
    ᶄ ͝৽نύλʔϯ
    ᶅ ੾Γग़͠ύλʔϯ
    ᶆ ϒϦοδύλʔϯ
    ᶇ extensionύλʔϯ
    ᶈ ๫࿐ύλʔϯ
    ᶉ ৐ͬऔΓύλʔϯ
    ᶊ ࣸܦύλʔϯ
    ύλʔϯ  ≒  ෢ಓʹ͓͚Δܗ
    

    View Slide

31. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
    16
    ᶃ Ԇ໋ύλʔϯ
    ᶄ ͝৽نύλʔϯ
    ᶅ ੾Γग़͠ύλʔϯ
    ᶆ ϒϦοδύλʔϯ
    ᶇ extensionύλʔϯ
    ᶈ ๫࿐ύλʔϯ
    ᶉ ৐ͬऔΓύλʔϯ
    ᶊ ࣸܦύλʔϯ
    ύλʔϯ  ≒  ෢ಓʹ͓͚Δܗ
    ύλʔϯԽ͢Δҙٛ
    

    View Slide

32. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
    16
    ᶃ Ԇ໋ύλʔϯ
    ᶄ ͝৽نύλʔϯ
    ᶅ ੾Γग़͠ύλʔϯ
    ᶆ ϒϦοδύλʔϯ
    ᶇ extensionύλʔϯ
    ᶈ ๫࿐ύλʔϯ
    ᶉ ৐ͬऔΓύλʔϯ
    ᶊ ࣸܦύλʔϯ
    ύλʔϯ  ≒  ෢ಓʹ͓͚Δܗ
    ύλʔϯԽ͢Δҙٛ
    →  ໎Θͣ൑அͰ͖Δ
    

    View Slide

33. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
    16
    ᶃ Ԇ໋ύλʔϯ
    ᶄ ͝৽نύλʔϯ
    ᶅ ੾Γग़͠ύλʔϯ
    ᶆ ϒϦοδύλʔϯ
    ᶇ extensionύλʔϯ
    ᶈ ๫࿐ύλʔϯ
    ᶉ ৐ͬऔΓύλʔϯ
    ᶊ ࣸܦύλʔϯ
    ύλʔϯ  ≒  ෢ಓʹ͓͚Δܗ
    ύλʔϯԽ͢Δҙٛ
    →  ໎Θͣ൑அͰ͖Δ
    

    View Slide

34. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    Mix and MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
    16
    ᶃ Ԇ໋ύλʔϯ
    ᶄ ͝৽نύλʔϯ
    ᶅ ੾Γग़͠ύλʔϯ
    ᶆ ϒϦοδύλʔϯ
    ᶇ extensionύλʔϯ
    ᶈ ๫࿐ύλʔϯ
    ᶉ ৐ͬऔΓύλʔϯ
    ᶊ ࣸܦύλʔϯ
    ύλʔϯ  ≒  ෢ಓʹ͓͚Δܗ
    ύλʔϯԽ͢Δҙٛ
    →  ໎Θͣ൑அͰ͖Δ
    ※֤ύλʔϯ໊͸ࢲʹΑΔউखͳ໋໊
    

    View Slide

35. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶃԆ໋ύλʔϯ
    17
    Objecswi7
    

    View Slide

36. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶃԆ໋ύλʔϯ
    17
    objc  
    class
    objc  
    class
    objc  
    class
    Objecswi7
    

    View Slide

37. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶃԆ໋ύλʔϯ
    17
    objc  
    class
    objc  
    class
    objc  
    class
    Nullability,  Genericsʹؔ͢ΔΞϊςʔγϣϯΛ෇Ճ
    Objecswi7
    

    View Slide

38. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶃԆ໋ύλʔϯ
    17
    objc  
    class
    objc  
    class
    objc  
    class
    Nullability,  Genericsʹؔ͢ΔΞϊςʔγϣϯΛ෇Ճ
    ܕ҆શɾnil  ҆શ  ͳੈք
    Objecswi7
    

    View Slide

39. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶃԆ໋ύλʔϯ
    17
    objc  
    class
    objc  
    class
    objc  
    class
    Nullability,  Genericsʹؔ͢ΔΞϊςʔγϣϯΛ෇Ճ
    ܕ҆શɾnil  ҆શ  ͳੈք
    swi7
    ҆શʹΞΫηε
    Objecswi7
    

    View Slide

40. ᶃԆ໋ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    objcʹ Nullability, Lightweight GenericsΛ௥Ճ͢Δ
    18
    @interface UserHistory
    -(Episode*)lastEepisode;
    -(NSArray*)allEpisodes;
    @end
    

    View Slide

41. ᶃԆ໋ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    objcʹ Nullability, Lightweight GenericsΛ௥Ճ͢Δ
    18
    @interface UserHistory
    -(Episode*)lastEepisode;
    -(NSArray*)allEpisodes;
    @end
    NS_ASSUME_NONNULL_BEGIN
    @interface UserHistory
    -(nullable Episode*)lastEepisode;
    -(NSArray*)allEpisodes;
    NS_ASSUME_NONNULL_END
    @end
    

    View Slide

42. ᶃԆ໋ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    objcʹ Nullability, Lightweight GenericsΛ௥Ճ͢Δ
    18
    @interface UserHistory
    -(Episode*)lastEepisode;
    -(NSArray*)allEpisodes;
    @end
    NS_ASSUME_NONNULL_BEGIN
    @interface UserHistory
    -(nullable Episode*)lastEepisode;
    -(NSArray*)allEpisodes;
    NS_ASSUME_NONNULL_END
    @end
    class UserHistory {
    func lastEepisode()->Episode?
    func allEepisodes()->[Episode]
    }
    

    View Slide

43. ᶃԆ໋ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    objcʹ Nullability, Lightweight GenericsΛ௥Ճ͢Δ
    • طଘͷobjcࢿ࢈Λ҆શʹ࢖͑Δ
    • ϩʔίετɾϋΠϦλʔϯ
    • SwiftରԠ΁ͷୈҰาͱͯ͠࠷ద
    18
    @interface UserHistory
    -(Episode*)lastEepisode;
    -(NSArray*)allEpisodes;
    @end
    NS_ASSUME_NONNULL_BEGIN
    @interface UserHistory
    -(nullable Episode*)lastEepisode;
    -(NSArray*)allEpisodes;
    NS_ASSUME_NONNULL_END
    @end
    class UserHistory {
    func lastEepisode()->Episode?
    func allEepisodes()->[Episode]
    }
    

    View Slide

44. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶄ͝৽نύλʔϯ
    19
    Objecswi7
    

    View Slide

45. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶄ͝৽نύλʔϯ
    19
    objc  
    class
    objc  
    class
    objc  
    class
    Objecswi7
    

    View Slide

46. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶄ͝৽نύλʔϯ
    19
    objc  
    class
    objc  
    class
    objc  
    class
    ViewController  
    .swi7
    View   Model  
    Objecswi7
    

    View Slide

47. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶄ͝৽نύλʔϯ
    19
    objc  
    class
    objc  
    class
    objc  
    class
    instanViewController  
    .swi7
    View   Model  
    Objecswi7
    

    View Slide

48. ᶄ͝৽نύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ৽نViewController͸جຊϑϧSwiftͰॻ͘
    ʮ৽ن։ൃ෼͸SwiftͰॻ͖·͢ʯύλʔϯ
    طଘͷobjcίʔυͷґଘ͕গͳ͘΍Γ΍͍͢
    ৽͍͠ը໘΍ػೳΛ௥Ճ͢Δέʔεʹ͓͢͢Ί
    ྫʣ
    • Ϣʔβొ࿥ɾϩάΠϯ
    • ϚΠϝχϡʔ
    • ίΠϯߪೖॲཧ
    • ಈը޿ࠂ
    20
    

    View Slide

49. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    21
    ᶅ੾Γग़͠ύλʔϯ
    Objecswi7
    

    View Slide

50. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    21
    ᶅ੾Γग़͠ύλʔϯ
    objc  class  
    method  
    Objecswi7
    

    View Slide

51. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    21
    ᶅ੾Γग़͠ύλʔϯ
    objc  class  
    method  
    Objecswi7
    

    View Slide

52. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    21
    Logic  
    .swi7
    ᶅ੾Γग़͠ύλʔϯ
    objc  class  
    method  
    Objecswi7
    

    View Slide

53. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    21
    Logic  
    .swi7
    ᶅ੾Γग़͠ύλʔϯ
    objc  class  
    method  
    ίʔϧ
    Objecswi7
    

    View Slide

54. ᶅ੾Γग़͠ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ϩδοΫΛswiftʹ੾Γग़͢
    22
    - (NSNumber*)getNum {
    NSNumber* num = ...;
    return num;
    }
    .m
    

    View Slide

55. ᶅ੾Γग़͠ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ϩδοΫΛswiftʹ੾Γग़͢
    22
    if (num.integerValue == 0) {
    NSLog(@"num is zero");
    } else {
    NSLog(@"num is non zero");
    }
    - (NSNumber*)getNum {
    NSNumber* num = ...;
    return num;
    }
    .m
    

    View Slide

56. ᶅ੾Γग़͠ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ϩδοΫΛswiftʹ੾Γग़͢
    22
    - (NSNumber*)getNum {
    NSNumber* num = ...;
    return num;
    }
    .m
    

    View Slide

57. ᶅ੾Γग़͠ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ϩδοΫΛswiftʹ੾Γग़͢
    22
    - (NSNumber*)getNum {
    NSNumber* num = ...;
    return num;
    }
    .m
    [NumLogger debug:num];
    

    View Slide

58. ᶅ੾Γग़͠ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ϩδοΫΛswiftʹ੾Γग़͢
    22
    - (NSNumber*)getNum {
    NSNumber* num = ...;
    return num;
    }
    .m
    +
    final class NumLogger: NSObject {
    class func debug(num:NSNumber) {
    if num.integerValue == 0 {
    print("num is zero")
    } else {
    print("num is non zero")
    }
    }
    }
    .swi7
    [NumLogger debug:num];
    

    View Slide

59. ᶅ੾Γग़͠ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ϩδοΫΛswiftʹ੾Γग़͢
    22
    - (NSNumber*)getNum {
    NSNumber* num = ...;
    return num;
    }
    .m
    +
    final class NumLogger: NSObject {
    class func debug(num:NSNumber) {
    if num.integerValue == 0 {
    print("num is zero")
    } else {
    print("num is non zero")
    }
    }
    }
    .swi7
    [NumLogger debug:num];
    • ࠷খݶͷมߋͰطଘobjcϝιουͷϩδοΫΛ௥Ճɾमਖ਼Ͱ͖Δ
    • ࢖͍Ͳ͜Ζɿϩάग़ྗॲཧɺόϦσʔγϣϯɺUtilతͳॲཧ
    • Ϣχοτςετ΋ॻ͖΍͍͢
    

    View Slide

60. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶆϒϦοδύλʔϯ
    23
    Objecswi7
    

    View Slide

61. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶆϒϦοδύλʔϯ
    23
    objc  
    class
    objc  
    class
    objc  
    class
    Objecswi7
    

    View Slide

62. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶆϒϦοδύλʔϯ
    23
    Nested  Type
    Top-­‐level  
    funcTypealias
    Tuple
    enum
    enum
    enum
    struct
    struct
    struct
    objc  
    class
    objc  
    class
    objc  
    class
    Objecswi7
    

    View Slide

63. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶆϒϦοδύλʔϯ
    23
    Nested  Type
    Top-­‐level  
    funcTypealias
    Tuple
    enum
    enum
    enum
    struct
    struct
    struct
    objc  
    class
    objc  
    class
    objc  
    class
    Objecswi7
    

    View Slide

64. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶆϒϦοδύλʔϯ
    23
    Nested  Type
    Top-­‐level  
    funcTypealias
    Tuple
    enum
    enum
    enum
    struct
    struct
    struct
    objc  
    class
    objc  
    class
    objc  
    class
    Objecswi7
    

    View Slide

65. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ᶆϒϦοδύλʔϯ
    23
    Nested  Type
    Top-­‐level  
    funcTypealias
    Tuple
    enum
    enum
    enum
    struct
    struct
    struct
    objc  
    class
    objc  
    class
    objc  
    class
    Bridging  
    NSObject
    Objecswi7
    

    View Slide

66. objcͱswiftͷڮ౉͠
    Ұఆن໛ͷswfitίϯϙʔωϯτ
    objcίʔυ ͷڮ౉͠
    ᶆϒϦοδύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    24
    ޿ࠂ࿮ Ad
    networking
    logging
    imp
    click
    display/  
    event  handling
    

    View Slide

67. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    25
    ᶇextensionύλʔϯ
    Objecswi7
    

    View Slide

68. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    25
    ᶇextensionύλʔϯ
    FooClass  
    method1
    method2
    Objecswi7
    

    View Slide

69. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    25
    ᶇextensionύλʔϯ
    FooClass  
    method1
    method2
    method3
    Objecswi7
    

    View Slide

70. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    25
    ᶇextensionύλʔϯ
    FooClass  
    method1
    method2
    method3
    FooClass  
    extension    
    Objecswi7
    

    View Slide

71. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    25
    ᶇextensionύλʔϯ
    FooClass  
    method1
    method2
    method3
    FooClass  
    extension    
    method3
    Objecswi7
    

    View Slide

72. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    25
    ᶇextensionύλʔϯ
    FooClass  
    method1
    method2
    method3
    FooClass  
    extension    
    method3
    Objecswi7
    

    View Slide

73. ᶇextensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    طଘobjcΫϥεΛextension͢Δ
    26
    @implement FooClass
    - (void)method1 {...}
    - (void)method2 {...}
    @end
    .m
    

    View Slide

74. ᶇextensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    طଘobjcΫϥεΛextension͢Δ
    26
    @implement FooClass
    - (void)method1 {...}
    - (void)method2 {...}
    @end
    .m
    +
    extension FooClass {
    //ϝιου௥Ճ
    func method3() {
    …
    }
    }
    .swi7
    

    View Slide

75. ᶇextensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    طଘobjcΫϥεΛextension͢Δ
    26
    @implement FooClass
    - (void)method1 {...}
    - (void)method2 {...}
    @end
    .m
    +
    extension FooClass {
    //ϝιου௥Ճ
    func method3() {
    …
    }
    }
    .swi7
    • Ұ൪ࣗવͰద༻ͤ͞΍͍͢ύλʔϯ
    

    View Slide

76. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    27
    ᶇextensionύλʔϯ
    ViewerController
    Objecswi7
    

    View Slide

77. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    27
    ᶇextensionύλʔϯ
    ViewerController
    Objecswi7
    

    View Slide

78. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    27
    ᶇextensionύλʔϯ
    ViewerController
    Objecswi7
    

    View Slide

79. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    27
    ᶇextensionύλʔϯ
    ViewerController ViewerController  
    extension
    Objecswi7
    

    View Slide

80. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    27
    ᶇextensionύλʔϯ
    ViewerController ViewerController  
    extension
    func  
    shareBu)onDidTapped()  
    Objecswi7
    

    View Slide

81. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    27
    ᶇextensionύλʔϯ
    ViewerController ViewerController  
    extension
    func  
    shareBu)onDidTapped()  
    Objecswi7
    

    View Slide

82. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    Objecswi7
    

    View Slide

83. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Objecswi7
    

    View Slide

84. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Objecswi7
    method2
    

    View Slide

85. FooClass  
    extension    
    ᶇ
    extensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Objecswi7
    method2
    

    View Slide

86. FooClass  
    extension    
    ᶇ
    extensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Objecswi7
    method2  
    method2
    

    View Slide

87. FooClass  
    extension    
    ᶇ
    extensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    ࢀরɾίʔϧෆՄ
    Objecswi7
    method2  
    method2
    

    View Slide

88. FooClass  
    extension    
    ᶇ
    extensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Objecswi7
    method2  
    method2
    

    View Slide

89. FooClass  
    extension    
    ᶇ
    extensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Objecswi7
    method2  
    method2
    ҙਤతͳ  
    ΧϓηϧԽͷഁյʂ
    

    View Slide

90. FooClass  
    extension    
    ᶇ
    extensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Bridging-­‐
    Header.h  
    Objecswi7
    method2  
    method2
    ҙਤతͳ  
    ΧϓηϧԽͷഁյʂ
    

    View Slide

91. FooClass  
    extension    
    ᶇ
    extensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Bridging-­‐
    Header.h  
    Objecswi7
    property1
    method1
    ެ։
    method2  
    method2
    ҙਤతͳ  
    ΧϓηϧԽͷഁյʂ
    

    View Slide

92. FooClass  
    extension    
    ᶇ
    extensionύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    28
    ᶈ๫࿐ύλʔϯ
    FooClass  
    property1
    method1
    Bridging-­‐
    Header.h  
    ࢀরɾίʔϧ
    Objecswi7
    property1
    method1
    ެ։
    method2  
    method2
    ҙਤతͳ  
    ΧϓηϧԽͷഁյʂ
    

    View Slide

93. ᶈ๫࿐ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    29
    @interface FooClass ()
    @property NSString property1;
    @end
    @implement FooClass
    (void)method1 {
    ...
    }
    @end
    .m
    @interface FooClass
    @end
    .h
    

    View Slide

94. ᶈ๫࿐ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    29
    @interface FooClass ()
    @property NSString property1;
    @end
    @implement FooClass
    (void)method1 {
    ...
    }
    @end
    .m
    #import “xxx.h”
    #import “yyy.h”
    #import “zzz.h”
    ...
    @interface FooClass (PrivateForSwift)
    @property (readonly) NSString *property1;
    (void)method1;
    @end
    Xxxx-­‐Bridging-­‐Header.h
    +
    @interface FooClass
    @end
    .h
    

    View Slide

95. ᶈ๫࿐ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    29
    @interface FooClass ()
    @property NSString property1;
    @end
    @implement FooClass
    (void)method1 {
    ...
    }
    @end
    .m
    extension FooClass {
    func methods() {
    property1 = “foo";
    method1()
    }
    }
    .swi7
    +
    #import “xxx.h”
    #import “yyy.h”
    #import “zzz.h”
    ...
    @interface FooClass (PrivateForSwift)
    @property (readonly) NSString *property1;
    (void)method1;
    @end
    Xxxx-­‐Bridging-­‐Header.h
    +
    @interface FooClass
    @end
    .h
    

    View Slide

96. ᶈ๫࿐ύλʔϯ
    Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    29
    @interface FooClass ()
    @property NSString property1;
    @end
    @implement FooClass
    (void)method1 {
    ...
    }
    @end
    .m
    extension FooClass {
    func methods() {
    property1 = “foo";
    method1()
    }
    }
    .swi7
    +
    #import “xxx.h”
    #import “yyy.h”
    #import “zzz.h”
    ...
    @interface FooClass (PrivateForSwift)
    @property (readonly) NSString *property1;
    (void)method1;
    @end
    Xxxx-­‐Bridging-­‐Header.h
    +
    @interface FooClass
    @end
    .h
    ↑objc͸Ұ੾มߋ͍ͯ͠ͳ͍
    

    View Slide

97. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    30
    ϓϥΠϕʔτଐੑΛ෦෼తʹެ։͢Δ
    ᶈ๫࿐ύλʔϯ
    

    View Slide

98. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ҙਤతʹΧϓηϧԽΛഁյ
    30
    ϓϥΠϕʔτଐੑΛ෦෼తʹެ։͢Δ
    ᶈ๫࿐ύλʔϯ
    

    View Slide

99. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
    ҙਤతʹΧϓηϧԽΛഁյ
    ⁃ extension͔ΒຊମΫϥεͷϓϥΠϕʔτଐੑ΁ͷΞΫηε͕
    Մೳʹ
    30
    ϓϥΠϕʔτଐੑΛ෦෼తʹެ։͢Δ
    ᶈ๫࿐ύλʔϯ
    

    View Slide

100. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ҙਤతʹΧϓηϧԽΛഁյ
     ⁃ extension͔ΒຊମΫϥεͷϓϥΠϕʔτଐੑ΁ͷΞΫηε͕
     Մೳʹ
     ⁃ มߋՕॴ͸ϒϦοδϯάϔομͷΈɺطଘͷ.h/.m͸มߋͳ͠
     30
     ϓϥΠϕʔτଐੑΛ෦෼తʹެ։͢Δ
     ᶈ๫࿐ύλʔϯ
     

     View Slide

101. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ҙਤతʹΧϓηϧԽΛഁյ
     ⁃ extension͔ΒຊମΫϥεͷϓϥΠϕʔτଐੑ΁ͷΞΫηε͕
     Մೳʹ
     ⁃ มߋՕॴ͸ϒϦοδϯάϔομͷΈɺطଘͷ.h/.m͸มߋͳ͠
     ଥڠ͕ඞཁͳ෦෼
     30
     ϓϥΠϕʔτଐੑΛ෦෼తʹެ։͢Δ
     ᶈ๫࿐ύλʔϯ
     

     View Slide

102. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ҙਤతʹΧϓηϧԽΛഁյ
     ⁃ extension͔ΒຊମΫϥεͷϓϥΠϕʔτଐੑ΁ͷΞΫηε͕
     Մೳʹ
     ⁃ มߋՕॴ͸ϒϦοδϯάϔομͷΈɺطଘͷ.h/.m͸มߋͳ͠
     ଥڠ͕ඞཁͳ෦෼
     ⁃ ҟ࿦ͷग़Δͱ͜Ζ
     30
     ϓϥΠϕʔτଐੑΛ෦෼తʹެ։͢Δ
     ᶈ๫࿐ύλʔϯ
     

     View Slide

103. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ҙਤతʹΧϓηϧԽΛഁյ
     ⁃ extension͔ΒຊମΫϥεͷϓϥΠϕʔτଐੑ΁ͷΞΫηε͕
     Մೳʹ
     ⁃ มߋՕॴ͸ϒϦοδϯάϔομͷΈɺطଘͷ.h/.m͸มߋͳ͠
     ଥڠ͕ඞཁͳ෦෼
     ⁃ ҟ࿦ͷग़Δͱ͜Ζ
     ⁃ Ұ࣌తͳରԠɺͱ͍͏ׂΓ੾Γ
     30
     ϓϥΠϕʔτଐੑΛ෦෼తʹެ։͢Δ
     ᶈ๫࿐ύλʔϯ
     

     View Slide

104. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ҙਤతʹΧϓηϧԽΛഁյ
     ⁃ extension͔ΒຊମΫϥεͷϓϥΠϕʔτଐੑ΁ͷΞΫηε͕
     Մೳʹ
     ⁃ มߋՕॴ͸ϒϦοδϯάϔομͷΈɺطଘͷ.h/.m͸มߋͳ͠
     ଥڠ͕ඞཁͳ෦෼
     ⁃ ҟ࿦ͷग़Δͱ͜Ζ
     ⁃ Ұ࣌తͳରԠɺͱ͍͏ׂΓ੾Γ
     ⁃ ͜͜ΛׂΓ੾Ε͹SwiftԽ͸ҰؾʹਐΉ
     30
     ϓϥΠϕʔτଐੑΛ෦෼తʹެ։͢Δ
     ᶈ๫࿐ύλʔϯ
     

     View Slide

105. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     31
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     31
     Objecswi7
     property2
     method2
     

     View Slide

106. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     31
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     31
     Objecswi7
     property2
     method2
     FooClass  
     extension  
     method2  
     property2  
     ᶇ
     extensionύλʔϯ
     ???
     

     View Slide

107. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     31
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     31
     Objecswi7
     property2
     method2
     FooClass  
     extension  
     method2  
     property2  
     ᶇ
     extensionύλʔϯ
     ???
     

     View Slide

108. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     32
     Objecswi7
     

     View Slide

109. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     Objecswi7
     

     View Slide

110. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     Objecswi7
     property2
     method2
     

     View Slide

111. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     Objecswi7
     property2
     method2
     FooClassBase
     rename
     

     View Slide

112. FooClass  
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     Objecswi7
     property2
     method2
     FooClassBase
     rename
     

     View Slide

113. FooClass  
     extends
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     Objecswi7
     property2
     method2
     FooClassBase
     rename
     

     View Slide

114. FooClass  
     extends
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     method2  
     property2  
     Objecswi7
     property2
     method2
     FooClassBase
     rename
     

     View Slide

115. FooClass  
     extends
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     method2  
     property2  
     Objecswi7
     FooClassBase
     rename
     

     View Slide

116. FooClass  
     extends
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     method2  
     property2  
     Objecswi7
     ࢀরɾίʔϧ?
     FooClassBase
     rename
     

     View Slide

117. FooClass  
     extends
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     method2  
     property2  
     Objecswi7
     FooClassBase
     rename
     

     View Slide

118. FooClass  
     extends
     Bridging-­‐
     Header.h  
     +ᶈ๫࿐ύλʔϯ
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     method2  
     property2  
     Objecswi7
     FooClassBase
     rename
     

     View Slide

119. FooClass  
     extends
     Bridging-­‐
     Header.h  
     +ᶈ๫࿐ύλʔϯ
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     method2  
     property2  
     Objecswi7
     property1
     method1
     ެ։
     FooClassBase
     rename
     

     View Slide

120. FooClass  
     extends
     Bridging-­‐
     Header.h  
     +ᶈ๫࿐ύλʔϯ
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     32
     ᶉ৐ͬऔΓύλʔϯ
     FooClass  
     method1
     property1
     32
     method2  
     property2  
     Objecswi7
     property1
     method1
     ެ։
     ࢀরɾίʔϧ
     FooClassBase
     rename
     

     View Slide

121. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     33
     objΫϥεΛswiftͰܧঝ໊͠લΛ৐ͬऔΔ
     ᶉ৐ͬऔΓύλʔϯ
     

     View Slide

122. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ⁃ ܧঝͯ͠৐ͬऔΔ
     33
     objΫϥεΛswiftͰܧঝ໊͠લΛ৐ͬऔΔ
     ᶉ৐ͬऔΓύλʔϯ
     

     View Slide

123. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ⁃ ܧঝͯ͠৐ͬऔΔ
     • ΫϥεຊମΛSwiftʹҠ͠ସ͑ɺطଘobjcΫϥε͸਌
     ΫϥεԽ
     33
     objΫϥεΛswiftͰܧঝ໊͠લΛ৐ͬऔΔ
     ᶉ৐ͬऔΓύλʔϯ
     

     View Slide

124. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ⁃ ܧঝͯ͠৐ͬऔΔ
     • ΫϥεຊମΛSwiftʹҠ͠ସ͑ɺطଘobjcΫϥε͸਌
     ΫϥεԽ
     • ϓϩύςΟ΍ϝιου͸ࣗ༝ʹ௥ՃՄೳ
     33
     objΫϥεΛswiftͰܧঝ໊͠લΛ৐ͬऔΔ
     ᶉ৐ͬऔΓύλʔϯ
     

     View Slide

125. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ⁃ ܧঝͯ͠৐ͬऔΔ
     • ΫϥεຊମΛSwiftʹҠ͠ସ͑ɺطଘobjcΫϥε͸਌
     ΫϥεԽ
     • ϓϩύςΟ΍ϝιου͸ࣗ༝ʹ௥ՃՄೳ
     • ᶈ๫࿐ύλʔϯͷซ༻Մೳ
     33
     objΫϥεΛswiftͰܧঝ໊͠લΛ৐ͬऔΔ
     ᶉ৐ͬऔΓύλʔϯ
     

     View Slide

126. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ⁃ ܧঝͯ͠৐ͬऔΔ
     • ΫϥεຊମΛSwiftʹҠ͠ସ͑ɺطଘobjcΫϥε͸਌
     ΫϥεԽ
     • ϓϩύςΟ΍ϝιου͸ࣗ༝ʹ௥ՃՄೳ
     • ᶈ๫࿐ύλʔϯͷซ༻Մೳ
     ⁃ ଥڠϙΠϯτ
     33
     objΫϥεΛswiftͰܧঝ໊͠લΛ৐ͬऔΔ
     ᶉ৐ͬऔΓύλʔϯ
     

     View Slide

127. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ⁃ ܧঝͯ͠৐ͬऔΔ
     • ΫϥεຊମΛSwiftʹҠ͠ସ͑ɺطଘobjcΫϥε͸਌
     ΫϥεԽ
     • ϓϩύςΟ΍ϝιου͸ࣗ༝ʹ௥ՃՄೳ
     • ᶈ๫࿐ύλʔϯͷซ༻Մೳ
     ⁃ ଥڠϙΠϯτ
     • ܧঝؔ܎͕มߋ͞ΕΔ
     33
     objΫϥεΛswiftͰܧঝ໊͠લΛ৐ͬऔΔ
     ᶉ৐ͬऔΓύλʔϯ
     

     View Slide

128. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ⁃ ܧঝͯ͠৐ͬऔΔ
     • ΫϥεຊମΛSwiftʹҠ͠ସ͑ɺطଘobjcΫϥε͸਌
     ΫϥεԽ
     • ϓϩύςΟ΍ϝιου͸ࣗ༝ʹ௥ՃՄೳ
     • ᶈ๫࿐ύλʔϯͷซ༻Մೳ
     ⁃ ଥڠϙΠϯτ
     • ܧঝؔ܎͕มߋ͞ΕΔ
     ⁃ ผղˠ
     33
     objΫϥεΛswiftͰܧঝ໊͠લΛ৐ͬऔΔ
     ᶉ৐ͬऔΓύλʔϯ
     

     View Slide

129. FooClass  
     method1
     property1
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     34
     ᶉผղɿ৐ͬऔΓύλʔϯ(ΧςΰϦ֦ு)
     FooClass  
     34
     property2  
     (Category  Extension)
     Objecswi7
     property1
     extensionͰ͸ͳ͘  
     ಉ໊ΫϥεΛSwi7Ͱ
     ݩͷFooClassΛ  
     objcΧςΰϦ֦ுʹ߱֨
     

     View Slide

130. FooClass  
     method1
     property1
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     34
     ᶉผղɿ৐ͬऔΓύλʔϯ(ΧςΰϦ֦ு)
     FooClass  
     34
     property2  
     (Category  Extension)
     Objecswi7
     property1
     extensionͰ͸ͳ͘  
     ಉ໊ΫϥεΛSwi7Ͱ
     ݩͷFooClassΛ  
     objcΧςΰϦ֦ுʹ߱֨
     ☓৐ͬऔΓݩPCKDʹϓϥΠϕʔτଐੑ͕͋Δ৔߹ɺ੍ݶଟΊͳͷͰ/(
     

     View Slide

131. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ࢀߟɿΞϯνύλʔϯ
     35
     //ετΞυϓϩύςΟͷ௥Ճ
     var name:String {
     get { return objc_getAssociatedObject(self, &key) as! String }
     set { objc_setAssociatedObject(self, &key, newValue,
     .OBJC_ASSOCIATION_RETAIN_NONATOMIC)}
     }
     //ϓϥΠϕʔτϝιουͷ࣮ߦ
     if respondsToSelector("_reload") {
     performSelector("_reload")
     }
     //ϓϥΠϕʔτϓϩύςΟͷࢀর
     if let titleLabel = valueForKey("TitleLabel") as? UILabel {
     ...
     }
     • ΧϓηϧԽΛഁյͤͣʹϓϥΠϕʔτ
     ଐੑΛࢀরɾ௥ՃՄೳ  
     • ϝϯςφϯεੑ˚  
     • ϚϯΨϘοΫεͰ͸ۃྗ࢖༻͠ͳ͍Α
     ͏ʹ͍ͯ͠Δ
     associatedObject
     Ωʔ஋ίʔσΟϯά
     objcηϨΫλʔ
     

     View Slide

132. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     36
     ᶊࣸܦύλʔϯ
     Objecswi7
     

     View Slide

133. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     36
     FooClass  
     method1
     method2
     ᶊࣸܦύλʔϯ
     Objecswi7
     

     View Slide

134. ࣸܦ
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     36
     FooClass  
     method1
     method2
     ᶊࣸܦύλʔϯ
     Objecswi7
     

     View Slide

135. FooClass  
     method1
     method2
     ࣸܦ
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     36
     FooClass  
     method1
     method2
     ᶊࣸܦύλʔϯ
     Objecswi7
     

     View Slide

136. FooClass  
     method1
     method2
     ࣸܦ
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     36
     ᶊࣸܦύλʔϯ
     Objecswi7
     

     View Slide

137. FooClass  
     method1
     method2
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     36
     ᶊࣸܦύλʔϯ
     Objecswi7
     

     View Slide

138. ᶊࣸܦύλʔϯ
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     طଘͷobjcίʔυΛswiftͰॻ͖௚͢
     • ࠷ޙͷखஈ
     • ςετͷ༗ແͰϦεΫมಈ
     • ݩίʔυ͕ςετͰอޢ͞Ε͍ͯΔˠ˕
     • ର৅objcίʔυΛ·ͣςετͰอޢ͔ͯ͠ΒSwiftͰॻ͖௚͢ˠ̋
     • ׬શॻ͖௚͠ˠ˚
     • ͋Δҙຯγϯϓϧ͕ͩɺϑϧQA͸ඞਢɺίετେ
     37
     

     View Slide

139. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ࢀߟɿࣸܦͷ͓ڙʹ
     38
     • Generated Interface
     

     View Slide

140. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ࢀߟɿࣸܦͷ͓ڙʹ
     39
     • Generated Interface
     

     View Slide

141. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ࢀߟɿࣸܦͷ͓ڙʹ
     40
     • Generated Interface
     

     View Slide

142. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ࢀߟɿࣸܦͷ͓ڙʹ
     • objc→swift ίʔυม׵πʔϧ
     • https://github.com/yahoojapan/objc2swift
     • https://objectivec2swift.com/?ref=producthunt#/converter/code
     • http://iswift.org
     • https://myappconverter.com
     • https://itunes.apple.com/us/app/o2swift-objective-c-to-swift/id1060352413?ls=1&mt=12
     • ͍ͣΕ΋ػցతͳม׵ͳͷͰख௚͠ˍQA͸ඞਢ
     41
     

     View Slide

143. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     42
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     Mix-and-MatchΛ࢖ͬͨSwiftҠߦύλʔϯ ϦεΫ  
     τϦοΩʔ౓  
     Swi7Ҡߦ౓
     খ
     େ
     

     View Slide

144. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     43
     

     View Slide

145. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     44
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     

     View Slide

146. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     44
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     h)p://shop.ohmsha.co.jp/shopdetail/000000003881/
     ϦϑΝΫλϦϯά
     

     View Slide

147. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     44
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     h)p://shop.ohmsha.co.jp/shopdetail/000000003881/
     ϦϑΝΫλϦϯά
     Extract  Method  
     Extract  Class
     

     View Slide

148. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     45
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     

     View Slide

149. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     45
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     h)p://www.sbcr.jp/products/4797311126.html
     gof  σβΠϯύλʔϯ
     

     View Slide

150. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     45
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     h)p://www.sbcr.jp/products/4797311126.html
     gof  σβΠϯύλʔϯ
     Bridgeύλʔϯ
     

     View Slide

151. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     46
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     

     View Slide

152. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     46
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     h)p://www.shoeisha.co.jp/book/detail/9784798116839
     ϨΨγʔίʔυվળΨΠυ
     

     View Slide

153. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     Կ͔ʹࣅ͍ͯΔ
     46
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     h)p://www.shoeisha.co.jp/book/detail/9784798116839
     ϨΨγʔίʔυվળΨΠυ
     • εϓϥ΢τϝιου  
     • εϓϥ΢τΫϥε  
     • ੩తϝιουͷެ։
     ςετίʔυΛॻͨ͘ΊͷϦϑΝΫλϦϯάख๏
     

     View Slide

154. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     47
     ᶃ Ԇ໋ύλʔϯ
     ᶄ ͝৽نύλʔϯ
     ᶅ ੾Γग़͠ύλʔϯ
     ᶆ ϒϦοδύλʔϯ
     ᶇ extensionύλʔϯ
     ᶈ ๫࿐ύλʔϯ
     ᶉ ৐ͬऔΓύλʔϯ
     ᶊ ࣸܦύλʔϯ
     Mix-and-MatchΛ࢖ͬͨSwiftҠߦύλʔϯ
     طଘͷιϑτ΢ΣΞ։ൃٕ๏ͷ׆༻ʹΑΓ  
     εϜʔζɾ҆શʹSwi7ҠߦՄೳ
     

     View Slide

155. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     48
     

     View Slide

156. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     49
     

     View Slide

157. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     Objective-C͔ΒSwiftԽ΁ͷҠߦ͸େมʁ
     49
     

     View Slide

158. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     Objective-C͔ΒSwiftԽ΁ͷҠߦ͸େมʁ
     →·ͣ͸؆୯ͳύλʔϯ͔Βࢼͯ͠ΈΔ
     49
     

     View Slide

159. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     Objective-C͔ΒSwiftԽ΁ͷҠߦ͸େมʁ
     →·ͣ͸؆୯ͳύλʔϯ͔Βࢼͯ͠ΈΔ
     • Ԇ໋ύλʔϯ
     49
     

     View Slide

160. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     Objective-C͔ΒSwiftԽ΁ͷҠߦ͸େมʁ
     →·ͣ͸؆୯ͳύλʔϯ͔Βࢼͯ͠ΈΔ
     • Ԇ໋ύλʔϯ
     • ͝৽نύλʔϯ
     49
     

     View Slide

161. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     Objective-C͔ΒSwiftԽ΁ͷҠߦ͸େมʁ
     →·ͣ͸؆୯ͳύλʔϯ͔Βࢼͯ͠ΈΔ
     • Ԇ໋ύλʔϯ
     • ͝৽نύλʔϯ
     ׳Ε͖ͯͨΒ͍ΖΜͳύλʔϯΛࢼ͢
     49
     

     View Slide

162. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     Objective-C͔ΒSwiftԽ΁ͷҠߦ͸େมʁ
     →·ͣ͸؆୯ͳύλʔϯ͔Βࢼͯ͠ΈΔ
     • Ԇ໋ύλʔϯ
     • ͝৽نύλʔϯ
     ׳Ε͖ͯͨΒ͍ΖΜͳύλʔϯΛࢼ͢
     ύλʔϯʹ͍ͭͯ͋Ε͜Εߟ͑Δͷ΋ָ͍͠
     49
     

     View Slide

163. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     Objective-C͔ΒSwiftԽ΁ͷҠߦ͸େมʁ
     →·ͣ͸؆୯ͳύλʔϯ͔Βࢼͯ͠ΈΔ
     • Ԇ໋ύλʔϯ
     • ͝৽نύλʔϯ
     ׳Ε͖ͯͨΒ͍ΖΜͳύλʔϯΛࢼ͢
     ύλʔϯʹ͍ͭͯ͋Ε͜Εߟ͑Δͷ΋ָ͍͠
     ⁃ ଞʹ΋ྑ͍ύλʔϯ͕͋Γͦ͏
     49
     

     View Slide

164. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ·ͱΊ
     Objective-C͔ΒSwiftԽ΁ͷҠߦ͸େมʁ
     →·ͣ͸؆୯ͳύλʔϯ͔Βࢼͯ͠ΈΔ
     • Ԇ໋ύλʔϯ
     • ͝৽نύλʔϯ
     ׳Ε͖ͯͨΒ͍ΖΜͳύλʔϯΛࢼ͢
     ύλʔϯʹ͍ͭͯ͋Ε͜Εߟ͑Δͷ΋ָ͍͠
     ⁃ ଞʹ΋ྑ͍ύλʔϯ͕͋Γͦ͏
     ⁃ ໊͔͍͍ͬ͜લر๬
     49
     

     View Slide

165. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     50
     objc
     

     View Slide

166. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     50
     objc
     

     View Slide

167. swi7
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     50
     objc
     

     View Slide

168. swi7
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     51
     objc
     

     View Slide

169. swi7
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     52
     objc
     swi7
     

     View Slide

170. swi7
     swi7
     swi7
     swi7
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     53
     objc
     swi7
     swi7
     

     View Slide

171. objc
     swi7
     swi7
     Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     54
     swi7
     swi7
     swi7
     swi7
     swi7
     swi7
     

     View Slide

172. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     55
     swi7
     

     View Slide

173. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     56
     ਐ
     ௙
     Ͳ
     ͏
     Ͱ
     ͢
     ͔
     

     View Slide

174. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ϚϯΨϘοΫεͷݱࡏͷSwiftԽ཰
     17%ఔ౓
     ·ͩ·ͩ͜Ε͔Β
     57
     

     View Slide

175. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ࠓޙͷ༧ଌʢࡶʣ
     58
     2020೥  ver5.6  ʹͯSwi7Խ཰100%౸ୡ༧ఆʢࡶʣʂʂʂ
     

     View Slide

176. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     59
     Let’s Objc to Swift !
     

     View Slide

177. Copyright (C) DeNA Co.,Ltd. All Rights Reserved.
     ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ
     60
     

     View Slide