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詳解Objective-C

hirose yudai
September 17, 2017
1
3.2k

 詳解Objective-C

iOSDC 2017でお話しする内容です

https://iosdc.jp/2017/node/1364

Objective-Cについて熱く語ります

hirose yudai

September 17, 2017
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Transcript

  1. Objective-C J04%$
 IUUQTJPTEDKQOPEF ৄղ

  2. ࣗݾ঺հ ໊લኍ੉༤େ ৬छJ04&OHJOFFS
 ໊͋ͩ4UBSޤ৯ 4XJGU੡ͷϥΠϒϥϦΛ͍͔ͭ͘࡞ͬͯެ։ͯ͠·͢
 
 ελʔ͍ͩ͘͞ CBOO[BJ ZIJSPTF

  3. ࠓ೔͓࿩͢͠Δ͜ͱɾ͍ͨ͜͠ͱ IUUQTJPTEDKQOPEF

  4. ࠓ೔ͷλʔήοτ૚ IUUQTJPTEDKQOPEF

  5. ࠓ೔ͷλʔήοτ૚ IUUQTJPTEDKQOPEF ओʹ4XJGUͰJ04։ൃ͍ͯ͠Δํ

  6. ࠓ೔ͷλʔήοτ૚ IUUQTJPTEDKQOPEF 0CKFDUJWF$͕࿀͘͠ͳͬͯདྷͨํ

  7. ࠓ೔ͷλʔήοτ૚ IUUQTJPTEDKQOPEF 0CKFDUJWF$ͷ͜ͱΛ͋·Γ஌Βͳ͍ํ޲͚

  8. ࠓ೔ͷλʔήοτ૚ IUUQTJPTEDKQOPEF ΋ͪΖΜͦ͏͡Όͳ͍ํ΋ָ͠ΜͰ͍ͩ͘͞

  9. ͲͪΒ͔ͱ͍͏ͱද໘తͳ͜ͱͷ͓࿩ IUUQTJPTEDKQOPEF جຊతͳػೳ͔ΒԠ༻·Ͱ
 ࣌ؒͷڐ͢ݶΓ͓఻͑͠·͢

  10. ͜ͷൃදͷ0CKFDUJWF$ J04։ൃͳͷͰ'PVOEBUJPOΛ࢖༻͢Δ͜ͱલఏͰ࿩͠·͢ "3$/PU.3$ 1VSF0CKFDUJWF$/PU0CKFDUJWF$  $ݴޠ΋ग़͖ͯ·͢

  11. ຊ୊ جຊ Ϋϥεͷએݴ ϝιου એݴ ࣮૷ ݺͼग़͠ #MPDLT .BDSP Ԡ༻

    - Type inference. - Method chain. - The strongest Objective-C I thought

  12. Ϋϥεͷએݴ CustomClass.h @interface CustomClass : NSObject @end CustomClass.m #import “CustomClass.h"

    @implementation CustomClass @end

  13. Ϋϥεͷએݴ CustomClass.h @interface CustomClass : NSObject // ͜͜ʹΠϯλʔϑΣʔε @end CustomClass.m

    #import “CustomClass.h" @implementation CustomClass // ͜͜ʹ࣮૷ @end I ϔομʔϑΝΠϧ ͱ N ϝΠϯϑΝΠϧ Λ࡞Δ 9DPEFͰΫϥεΛ࡞ΔͱͰ͖͍ͯ·͢

  14. Ϋϥεͷએݴ CustomClass.h @interface CustomClass : NSObject // ͜͜ʹΠϯλʔϑΣʔε @end CustomClass.m

    #import “CustomClass.h" @implementation CustomClass // ͜͜ʹ࣮૷ @end IϑΝΠϧ͸ΠϯλʔϑΣʔεΛఆٛ͢Δ ͨΊͷϑΝΠϧ IϑΝΠϧʹΫϥεΛએݴ͠ͳ͍ͱଞͷΫ ϥε͔Β͸ݟΔ͜ͱ͕Ͱ͖ͳ͍

  15. $MBTTͷએݴ CustomClass.h @interface CustomClass : NSObject // ͜͜ʹΠϯλʔϑΣʔε @end CustomClass.m

    #import “CustomClass.h" @implementation CustomClass // ͜͜ʹ࣮૷ @end ͍͍ͩͨ/40CKFDU΋͘͠͸ /40CKFDUΛܧঝ͍ͯ͠ΔΫϥεΛ ܧঝ͓͚ͯ͠͹0,

  16. Ϋϥεͷએݴ CustomClass.h @interface CustomClass : NSObject // ͜͜ʹΠϯλʔϑΣʔε @end CustomClass.m

    #import “CustomClass.h" @implementation CustomClass // ͜͜ʹ࣮૷ @end NʹIͰએݴͨ͠಺༰Λ࣮૷͍ͯ͘͠

  17. CustomClass.h @interface CustomClass : NSObject // ͜͜ʹΠϯλʔϑΣʔε @end ϝιουͷએݴ

  18. CustomClass.h @interface CustomClass : NSObject + (instancetype)method; - (void)method:(NSObject *)hoge;

    - (NSObject *)method:(NSObject *)hoge with:(NSObject *)fuga; @end ͜Μͳײ͡

  19. CustomClass.h @interface CustomClass : NSObject + (instancetype)method; - (void)method:(NSObject *)hoge;

    - (NSObject *)method:(NSObject *)hoge with:(NSObject *)fuga; @end ϝιουͷએݴ ͕͜͜ฦΓ஋

  20. CustomClass.h @interface CustomClass : NSObject + (instancetype)method; - (void)method:(NSObject *)hoge;

    - (NSObject *)method:(NSObject *)hoge with:(NSObject *)fuga; @end ϝιουͷએݴ ϝιουͷ໊લ

  21. CustomClass.h @interface CustomClass : NSObject + (instancetype)method; - (void)method:(NSObject *)hoge;

    - (NSObject *)method:(NSObject *)hoge with:(NSObject *)fuga; @end ϝιουͷએݴ ୈೋҾ਺Ҏ߱ʹ͸-BCFM͕ͭ͘

  22. CustomClass.h @interface CustomClass : NSObject + (instancetype)method; - (void)method:(NSObject *)hoge;

    - (NSObject *)method:(NSObject *)hoge with:(NSObject *)fuga; @end ϝιουͷએݴ A A͕Ϋϥεϝιου 4XJGUͩͱADMBTTGVODA AA͕Πϯελϯεϝιου 4XJGUͩͱAGVODA

  23. CustomClass.h @interface CustomClass : NSObject + (instancetype)method; - (void)method:(NSObject *)hoge;

    - (NSObject *)method:(NSObject *)hoge with:(NSObject *)fuga; @end ϝιουͷએݴ AJOTUBODFUZQFA͸ࣗ෼ͷ
 ΠϯελϯεͷܕΛද͢એݴ
 ܧঝઌͰ͜ͷϝιουΛ࢖ͭ৔߹
 ܧঝઌͷܕͱͯ͠ฦΔ

  24. @interface CustomClass : NSObject + (instancetype)method; @end @interface CustomClass2 :

    CustomClass //- (instancetype)method; @end JOTUBODFUZQFʹ͍ͭͯ

  25. @interface CustomClass : NSObject + (instancetype)method; @end @interface CustomClass2 :

    CustomClass //- (instancetype)method; @end JOTUBODFUZQF ͜ͷ৔߹ͷAJOTUBODFUZQFA͸ $VTUPN$MBTT

  26. @interface CustomClass : NSObject + (instancetype)method; @end @interface CustomClass2 :

    CustomClass //- (instancetype)method; @end JOTUBODFUZQF ͜ͷ৔߹ͷAJOTUBODFUZQFA͸ $VTUPN$MBTT

  27. CustomClass.m #import “CustomClass.h" @implementation CustomClass // ͜͜ʹ࣮૷ @end ϝιουͷ࣮૷

  28. CustomClass.m
 #import “CustomClass.h" @implementation CustomClass + (instancetype)method1 { CustomClass *custom

    = [[CustomClass alloc] init]; return custom; } - (void)method: (NSObject *)hoge { // do something... } @end ͜Μͳײ͡

  29. CustomClass.m
 #import “CustomClass.h" @implementation CustomClass + (instancetype)method1 { CustomClass *custom

    = [[CustomClass alloc] init]; return custom; } - (void)method: (NSObject *)hoge { // do something... } @end ϝιουͷ࣮૷ IͰॻ͔Ε͍ͯΔ௨Γʹએݴ͠ɺ
 \^είʔϓͷதͰϝιουͷ࣮૷

  30. CustomClass.m
 #import “CustomClass.h" @implementation CustomClass + (instancetype)method1 { CustomClass *custom

    = [[CustomClass alloc] init]; return custom; } - (void)method: (NSObject *)hoge { // do something... } @end ϝιουͷ࣮૷ ϩʔΧϧม਺΍ASFUVSOAจͱ͔ࡉ͔͍͜ ͱʹ͍ͭͯ͸ׂѪ

  31. @interface CustomClass : NSObject + (instancetype)method; @end @implementation CustomClass2 -

    (void)someMethod { CustomClass* object = [[CustomClass alloc] init]; [object method]; } @end ϝιουͷݺͼग़͠

  32. @interface CustomClass : NSObject + (instancetype)method; @end @implementation CustomClass2 -

    (void)someMethod { CustomClass* object = [[CustomClass alloc] init]; [object method]; } @end $VTUPN$MBTT͔Β$VTUPN$MBTTΛ࢖͏ ҧ͏Ϋϥε

  33. @interface CustomClass : NSObject + (instancetype)method; @end @implementation CustomClass2 -

    (void)someMethod { CustomClass* object = [[CustomClass alloc] init]; [object method]; } @end ϝιουͷݺͼग़͠ ͜ͷೋͭʹ஫໨

  34. @interface CustomClass : NSObject - (instancetype)method; @end @implementation CustomClass2 -

    (void)someMethod { CustomClass* object = [[CustomClass alloc] init]; [object method]; } @end ϝιουͷݺͼग़͠ 0CKFDUJWF$ͷϝιουͷݺͼग़͠͸
 <A3FDFJWFSANFUIPE> ͷܗʹͳΔ

  35. @interface CustomClass : NSObject - (instancetype)method; @end @implementation CustomClass2 -

    (void)someMethod { CustomClass* object = [[CustomClass alloc] init]; [object method]; } @end ϝιουͷݺͼग़͠ ͜ͷ৔߹͸
 A3FDFJWFSAA$VTUPN$MBTTA ΫϥεʹϝιουΛૹ͍ͬͯΔͷͰ
 ͜Ε͸Ϋϥεϝιουͷݺͼग़͠

  36. @interface CustomClass : NSObject - (instancetype)method; @end @implementation CustomClass2 -

    (void)someMethod { CustomClass* object = [[CustomClass alloc] init]; [object method]; } @end ϝιουͷݺͼग़͠ ͜ͷ৔߹͸
 A3FDFJWFSAAPCKFDUA $VTUPN$MBTTܕͷΠϯελϯεʹ
 ϝιουΛૹ͍ͬͯΔͷͰ Πϯελϯεϝιου

  37. @interface CustomClass : NSObject - (instancetype)method; @end @implementation CustomClass2 -

    (void)someMethod { CustomClass* object = [[CustomClass alloc] init]; [[object method] method]; } @end ϝιουͷݺͼग़͠ ͪͳΈʹϝιουνΣΠϯΛ
 ͢Δͱ͜͏ͳΔ

  38. @interface CustomClass : NSObject + (instancetype)method; @end @implementation CustomClass2 -

    (void)someMethod { CustomClass* object = [[CustomClass alloc] init]; [[[[object method] method] method]; } @end ϝιουͷݺͼग़͠ ʜ

  39. ʜ

  40. [[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[ [[[[[[[[[[[[object method] method] method] method] method] method] method] method]

    method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] method] ; ϝιουνΣΠϯΛ͢Δͱ<>͕͍ͬͺ͍ʹ ͳΔ

  41. ݟͨ໨͕

  42. <>͚ͭ͗ͯ͢

  43. Χοίѱ͍

  44. ݴ͍͔͚ͨͬͨͩͰ͢

  45. ຊ୊ جຊ Ϋϥεͷએݴ ϝιου એݴ ࣮૷ ݺͼग़͠ #MPDLT .BDSP Ԡ༻

    - Type inference. - Method chain. - The strongest Objective-C I thought ࣍͜͜

  46. #MPDLTͱ͸ 4XJGUͰ͍͏ͱ͜Ζͷ$MPTVSF ͬΆ͍΋ͷ  $MPTVSFΑΓ΋ѻ͍ͮΒ͍ ॻ͖ํ͕൥ࡶ ॻ͖ํΛ͍ͭ΋๨ΕΔ IUUQGVDLJOHCMPDLTZOUBYDPNهࡌͷ࢓ํ͸͔͜͜Β

  47. #MPDLTͱ͸ 4XJGUͰ͍͏ͱ͜Ζͷ$MPTVSF ͬΆ͍΋ͷ  $MPTVSFΑΓ΋ѻ͍ͮΒ͍ ॻ͖ํ͕൥ࡶ ॻ͖ํΛ͍ͭ΋๨ΕΔ IUUQGVDLJOHCMPDLTZOUBYDPNهࡌͷ࢓ํ͸͔͜͜Β એݴ͢Δ৔ॴʹΑͬͯॻ͖ํ͕มΘΔ ৄ͍͠એݴͷ࢓ํ͸͔͜͜ΒΈ͍ͯͩ͘͞

  48. ࠓճ͸ϓϩύςΟͷΈ঺հ એݴ
 !JOUFSGBDF$VTUPN$MBTT/40CKFDU @property (nonatomic, copy) NSObject* (^blocks)(NSInteger); @end

  49. ࠓճ͸ϓϩύςΟͷΈ঺հ એݴ
 !JOUFSGBDF$VTUPN$MBTT/40CKFDU @property (nonatomic, copy) NSObject* (^blocks)(NSInteger); @end 0CKFDUJWF$ͷϓϩύςΟͷએݴ

  50. ࠓճ͸ϓϩύςΟͷΈ঺հ એݴ
 !JOUFSGBDF$VTUPN$MBTT/40CKFDU @property (nonatomic, copy) NSObject* (^blocks)(NSInteger); @end ͜͜ʹଐੑ


    ৄࡉ͸লུ

  51. ࠓճ͸ϓϩύςΟͷΈ঺հ એݴ
 !JOUFSGBDF$VTUPN$MBTT/40CKFDU @property (nonatomic, copy) NSObject* (^blocks)(NSInteger); @end $PQZΛ͚ͭΔඞཁ͕͋Δ

  52. ࠓճ͸ϓϩύςΟͷΈ঺հ એݴ
 !JOUFSGBDF$VTUPN$MBTT/40CKFDU @property (nonatomic, copy) NSObject* (^blocks)(NSInteger); @end ฦΓ஋ͷܕ

  53. ࠓճ͸ϓϩύςΟͷΈ঺հ એݴ
 !JOUFSGBDF$VTUPN$MBTT/40CKFDU @property (nonatomic, copy) NSObject* (^blocks)(NSInteger); @end #MPDLTͷ໊લ

    ϓϩύςΟͷ໊લ

  54. ࠓճ͸ϓϩύςΟͷΈ঺հ એݴ
 !JOUFSGBDF$VTUPN$MBTT/40CKFDU @property (nonatomic, copy) NSObject* (^blocks)(NSInteger); @end Ҿ਺ͷܕ

  55. #MPDLTͰ͸ͳ͍৔߹ એݴ !JOUFSGBDF$VTUPN$MBTT/40CKFDU !QSPQFSUZ OPOBUPNJD DPQZ /40CKFDU PCKFDU @end #MPDLTͰ͸ͳ͍৔߹͸͜Μͳײ͡


    ͜͜ʹอ࣋͢ΔܕͱϓϩύςΟ໊Λهࡌ

  56. #MPDLTͷϓϩύςΟΛ࢖͏ ࢖͏ - (void)someMethod { self.blocks = ^NSObject* (NSInteger integer)

    { NSLog(@"log: %ld", integer); return [[NSObject alloc] init]; }; self.blocks(1); // log: 1 }

  57. #MPDLTͷϓϩύςΟΛ࢖͏ ࢖͏ - (void)someMethod { self.blocks = ^NSObject* (NSInteger integer)

    { NSLog(@"log: %ld", integer); return [[NSObject alloc] init]; }; self.blocks(1); // log: 1 } ฦΓ஋

  58. #MPDLTͷϓϩύςΟΛ࢖͏ ࢖͏ - (void)someMethod { self.blocks = ^NSObject* (NSInteger integer)

    { NSLog(@"log: %ld", integer); return [[NSObject alloc] init]; }; self.blocks(1); // log: 1 } Ҿ਺

  59. #MPDLTͷϓϩύςΟΛ࢖͏ ࢖͏ - (void)someMethod { self.blocks = ^NSObject* (NSInteger integer)

    { NSLog(@"log: %ld", integer); return [[NSObject alloc] init]; }; self.blocks(1); // log: 1 } \^ͷத਎͕࣮૷

  60. #MPDLTͷϓϩύςΟΛ࢖͏ ࢖͏ - (void)someMethod { self.blocks = ^NSObject* (NSInteger integer)

    { NSLog(@"log: %ld", integer); return [[NSObject alloc] init]; }; self.blocks(1); // log: 1 } ࣮ߦ͢Δͱ͖

  61. 4FMGΛΩϟϓνϟ͍ͨ͠ͱ͖ ࢖͏ - (void)someMethod { self.blocks = ^NSObject* (NSInteger integer)

    { NSLog(@"log: %@", self); return [[NSObject alloc] init]; }; }

  62. 4FMGΛΩϟϓνϟ͍ͨ͠ͱ͖ ࢖͏ - (void)someMethod { self.blocks = ^NSObject* (NSInteger integer)

    { NSLog(@"log: %@", self); return [[NSObject alloc] init]; }; } TFMGΛΩϟϓνϟ͢Δͱ
 ॥؀ࢀর͕ى͖ͯ͠·͏

  63. ऑࢀরΛ࢖͏ ࢖͏ - (void)someMethod { __weak CustomClass *weakSelf = self;

    self.blocks = ^NSObject* (NSInteger integer) { NSLog(@"log: %@", weakSelf); return [[NSObject alloc] init]; }; }

  64. ऑࢀরΛ࢖͏ ࢖͏ - (void)someMethod { __weak CustomClass *weakSelf = self;

    self.blocks = ^NSObject* (NSInteger integer) { NSLog(@"log: %@", weakSelf); return [[NSObject alloc] init]; }; } XFBLͷTFMGͷࢀরΛ࣋ͭ

  65. ऑࢀরΛ࢖͏ ࢖͏ - (void)someMethod { __weak CustomClass *weakSelf = self;

    self.blocks = ^NSObject* (NSInteger integer) { NSLog(@"log: %@", weakSelf); return [[NSObject alloc] init]; }; } CMPDLTͷதͰ͸XFBL4FMGΛ࢖͏

  66. ॥؀ࢀর͕ى͖Δ৔߹͸ؾΛ͚ͭΑ͏

  67. ຊ୊ جຊ Ϋϥεͷએݴ ϝιου એݴ ࣮૷ ݺͼग़͠ #MPDLT .BDSP Ԡ༻

    - Type inference. - Method chain. - The strongest Objective-C I thought ࣍͜͜

  68. .BDSPͱ͸ ϓϩάϥϜதͷจࣈྻΛ͋Β͔͡Ίఆٛͨ͠نଇʹ͕ͨͬͯ͠ஔ׵ ͢Δػೳͷ͜ͱΛ͍͍·͢ ŠҾ༻$ݴޠͷϚΫϩͷجຊʹ͍ͭͯ IUUQXXXDMBOHPSHEFUBJMNBDSP@CBTJDIUNM

  69. .BDSPͱ͸ ϓϩάϥϜதͷจࣈྻΛ͋Β͔͡Ίఆٛͨ͠نଇʹ͕ͨͬͯ͠ஔ׵ ͢Δػೳͷ͜ͱΛ͍͍·͢ ŠҾ༻$ݴޠͷϚΫϩͷجຊʹ͍ͭͯ IUUQXXXDMBOHPSHEFUBJMNBDSP@CBTJDIUNM ͜Ε͚ͩݴΘΕͯ΋Θ͔Βͳ͍ͱࢥ͏ͷͰ ࢖ͬͯΈ·͠ΐ͏

  70. .BDSPͱ͸ ϓϩάϥϜதͷจࣈྻΛ͋Β͔͡Ίఆٛͨ͠نଇʹ͕ͨͬͯ͠ஔ׵ ͢Δػೳͷ͜ͱΛ͍͍·͢ ŠҾ༻$ݴޠͷϚΫϩͷجຊʹ͍ͭͯ IUUQXXXDMBOHPSHEFUBJMNBDSP@CBTJDIUNM ·͔ͣ͜͜Β نଇͷఆٛΛ͢Δ

  71. نଇΛఆٛ͢Δ #define Log NSLog(@"ίίϮτΦολϤʔ") ఆٛεϧϤʔએݴ

  72. نଇΛఆٛ͢Δ #define Log NSLog(@"ίίϮτΦολϤʔ") ͜ͷఆٛͷ໊લ

  73. .BDSPͱ͸ ϓϩάϥϜதͷจࣈྻΛ͋Β͔͡Ίఆٛͨ͠نଇʹ͕ͨͬͯ͠ஔ׵ ͢Δػೳͷ͜ͱΛ͍͍·͢ ŠҾ༻$ݴޠͷϚΫϩͷجຊʹ͍ͭͯ IUUQXXXDMBOHPSHEFUBJMNBDSP@CBTJDIUNM ࣍͜͜Λ֬ೝ

  74. نଇΛఆٛ͢Δ #define Log NSLog(@"ίίϮτΦολϤʔ") ஔ׵͢Δ಺༰

  75. ஔ׵͢Δ಺༰ #define Log NSLog(@"ίίϮτΦολϤʔ") -PHͱϓϩάϥϜதʹॻ͘ͱ
 /4-PH !lίίϮτΦολϤʔ  ʹஔ׵͞ΕΔ

  76. ͭ·Γ͜͏ͳΔ #define Log NSLog(@"ίίϮτΦολϤʔ") - (void)someMethod { Log; }

  77. ͭ·Γ͜͏ͳΔ #define Log NSLog(@"ίίϮτΦολϤʔ") - (void)someMethod { Log; // ίίϮτΦολϤʔ

    } ͕͜͜
 /4-PH !lίίϮτΦολϤʔ  ஔ׵͞ΕΔ

  78. .BDSPʹ͍ͭͯ ଞʹ΋Ҿ਺ΛऔΔ͜ͱ͕Ͱ͖ͨΓ ఆ਺ͱͯ͠એݴ͢ΔΑ͏ͳ࢖͍ํͩͬͨΓ τʔΫϯͱݺ͹ΕΔػೳͩͬͨΓ͕͋ΔͷͰ ௐ΂ͯΈΔͱ໘ന͍Ͱ͢ ඇৗʹڧྗͰ͕͢࢖͍͗͢ʹ͸͝஫ҙ

  79. ຊ୊ جຊ Ϋϥεͷએݴ ϝιου એݴ ࣮૷ ݺͼग़͠ #MPDLT .BDSP Ԡ༻

    - Type inference. - Method chain. - The strongest Objective-C I thought ͔͜͜Β͕ຊ౰ʹ࿩͔ͨͬͨ͠಺༰ͩ͊ʂ

  80. 5ZQFJOGFSFODF

  81. 5ZQFJOGFSFODF ܕਪ࿦

  82. 0CKFDUJWF$ͷܕ 0CKFDUJWF$͸ϓϩάϥϜதʹܕΛهड़͢Δ͜ͱ͕Ͱ͖·͕͢ɺ࣮ ࡍ͸3VOUJNFͰܕ͕ܾ·Δಈతܕ෇͚ݴޠͰ͢ɻ ϓϩάϥϜதʹܕΛએݴ͢Δ͜ͱͰ*%&ͷิ׬͕ޮ͖΍͍͢ͱݴͬ ͨར఺͕͋Γ·͢ɻ ࣮ࡍʹ͸ಈతܕ෇͚Ͱ͋Δ͜ͱʹ͸มΘΒͳ͍ͷͰ͕͢ɺ*%&͕ղ ऍ͢ΔܕΛਪ࿦ͤ͞Δ͜ͱ͕Ͱ͖·͢ɻ ͦ͏ɺ@@BVUP@UZQFͳΒͶ

  83. @@BVUP@UZQF - (void)someMethod { __auto_type string = @"hogehoge"; string.length; }

  84. @@BVUP@UZQF - (void)someMethod { __auto_type string = @"hogehoge"; string.length; }

    ීஈܕΛએݴ͢Δ৔ॴʹ
 @@BVUP@UZQF

  85. @@BVUP@UZQF - (void)someMethod { __auto_type string = @"hogehoge"; string.length; }

    /44USJOHͷMFOHUI
 ϓϩύςΟʹΞΫηεͰ͖Δ ͭ·Γܕਪ࿦Λͯ͘͠ΕΔ

  86. @@BVUP@UZQF - (void)someMethod { __auto_type string = @"hogehoge"; string.length; }

    ѹ౗తਪ࿦

  87. .FUIPEDIBJO

  88. .FUIPEDIBJO MJLF4XJGU

  89. 4XJGUͬΆ͘ .FUIPEDIBJO

  90. 4XJGUͬΆ͘ .FUIPEDIBJO ͑ʁ0CKFDUJWF$ͬͯ͋ͷϝιουݺͼग़͢ͱ͖ʹ<>͚ͭ͗ͯ͢Χοί ѱ͍ݴޠͰ͠ΐʁ ͦ͏ࢥͬͨͦ͜ͷ͋ͳͨਖ਼ղͰ͢ɻ ࢒೦ͳ͕Βϝιουݺͼग़͠͸<>͚ͭΔͷ͕0CKFDUJWF$ ͜͜Ͱ͸ࠓ·Ͱಘͨ஌ࣝͷதͰ<>͚ͭͣʹॲཧΛॻ͍͍͖ͯ ͞ΒʹͦΕΛͭͳ͍Ͱ͍͖·͢ɻ

  91. ๨Εͨਓ͸ޙͰεϥΠυݟ௚ͯ͠Ͷ @interface CustomClass : NSObject @property (nonatomic, copy) CustomClass* (^method)();

    @property (nonatomic, copy) CustomClass* (^chain)(); @end ฦΓ஋͖ͭCMPDLTͷϓϩύςΟΛએݴ͢Δ

  92. ࢖͍ํ - (void)someMethod { self.chain(); }

  93. ࢖͍ํ - (void)someMethod { self.method(); } ॲཧΛ໊લ  Ͱݺͼग़ͤΔ

  94. ϝιουνΣΠϯ self.method().chain().chain().chain().chain().chain().chain( ).chain().chain().chain().chain().chain().chain().chain().ch ain().chain().chain().chain().chain().chain().chain().chain( ).chain().chain().chain().chain().chain().chain().chain().ch ain().chain().chain().chain().chain();

  95. ͚ͭ͗ͯ͢΋

  96. ͔͍͍ͬ͜

  97. ࣍ߦ͖·͠ΐ͏

  98. The strongest Objective-C I thought

  99. ๻ͷ͔Μ͕͑ͨ࠷ڧͷObjective-C

  100. #define let __auto_type const #define var __auto_type #define dump(count) NSLog(@“count:

    %ld”, count) #define print() NSLog(@"ίίϮτΦολϤʔ") NSArray* Array() { return @[]; } - (instancetype)init { self = [super init]; if (self) { self.method = ^{ print(); }; } return self; } - (void)someMethod { let array = Array(); var array2 = Array(); array2 = @[@"hoge", @"fuga"]; // array = @[@"hoge", @"fuga"]; ίϯύΠϧΤϥʔ self.method(); dump(array.count); dump(array2.count); }

  101. #define let __auto_type const #define var __auto_type #define dump(count) NSLog(@“count:

    %ld”, count) #define print() NSLog(@"ίίϮτΦολϤʔ") NSArray* Array() { return @[]; } - (instancetype)init { self = [super init]; if (self) { self.method = ^{ print(); }; } return self; } - (void)someMethod { let array = Array(); var array2 = Array(); array2 = @[@"hoge", @"fuga"]; // array = @[@"hoge", @"fuga"]; ίϯύΠϧΤϥʔ self.method(); dump(array.count); dump(array2.count); } ๻ͷ͔Μ͕͑ͨ࠷ڧͷ0CKFDUJWF$

  102. #define let __auto_type const #define var __auto_type #define dump(count) NSLog(@“count:

    %ld”, count) #define print() NSLog(@"ίίϮτΦολϤʔ") NSArray* Array() { return @[]; } - (instancetype)init { self = [super init]; if (self) { self.method = ^{ print(); }; } return self; } - (void)someMethod { let array = Array(); var array2 = Array(); array2 = @[@"hoge", @"fuga"]; // array = @[@"hoge", @"fuga"]; ίϯύΠϧΤϥʔ self.method(); dump(array.count); dump(array2.count); } ࣮ߦ݁Ռ ίίϮτΦολϤʔ count: 0 count: 2

  103. #define let __auto_type const #define var __auto_type #define dump(count) NSLog(@“count:

    %ld”, count) #define print() NSLog(@"ίίϮτΦολϤʔ") NSArray* Array() { return @[]; } - (instancetype)init { self = [super init]; if (self) { self.method = ^{ print(); }; } return self; } - (void)someMethod { let array = Array(); var array2 = Array(); array2 = @[@"hoge", @"fuga"]; // array = @[@"hoge", @"fuga"]; ίϯύΠϧΤϥʔ self.method(); dump(array.count); dump(array2.count); } ܕਪ࿦͕Ͱ͖Δʂ
 MFUͰఆ਺Λ؆୯ʹએݴʂ

  104. #define let __auto_type const #define var __auto_type #define dump(count) NSLog(@“count:

    %ld", count) #define print() NSLog(@"ίίϮτΦολϤʔ") NSArray* Array() { return @[]; } - (instancetype)init { self = [super init]; if (self) { self.method = ^{ print(); }; } return self; } - (void)someMethod { let array = Array(); var array2 = Array(); array2 = @[@"hoge", @"fuga"]; // array = @[@"hoge", @"fuga"]; ίϯύΠϧΤϥʔ self.method(); dump(array.count); dump(array2.count); } ΋ͬͱ؆୯ʹϩάΛు͘Α͏ʹʂ
 ϚΫϩ͸෼ذॲཧ΋͔͚ΔͷͰ
 ඞཁ͕͋Ε͹֦ு

  105. #define let __auto_type const #define var __auto_type #define dump(count) NSLog(@“count:

    %ld”, count) #define print() NSLog(@"ίίϮτΦολϤʔ") NSArray* Array() { return @[]; } - (instancetype)init { self = [super init]; if (self) { self.method = ^{ print(); }; } return self; } - (void)someMethod { let array = Array(); var array2 = Array(); array2 = @[@"hoge", @"fuga"]; // array = @[@"hoge", @"fuga"]; ίϯύΠϧΤϥʔ self.method(); dump(array.count); dump(array2.count); } $ݴޠͷTZOUBYΛ࢖ͬͯ ؾܰʹJOJUJBMJ[FSΛ࢖͑ΔΑ͏ʹʂ ͦͯ͠ɺ/4ϓϨϑΟοΫε΋ͱΔʂ

  106. ૉఢͰ͠ΐʁ

  107. Ͳ͔͜ͰΈͨ͜ͱ͋Δʁ

  108. None

  109. ൃදͷ·ͱΊ ๻ͷ͔Μ͕͑ͨ࠷ڧͷ0CKFDUJWF$͸ͱͯ΋ૉ੖Β͍͠΋ͷ͕ग़དྷ্͕Γ· ͨ͠ɻ ͔͠͠ɺνʔϜͰͷ։ൃͩͱ΍͸ΓࠞཚΛট͘Մೳੑ͕େ͖͍ͷͰ࢖༻͸΍ Ί·͠ΐ͏ɻ ͪͳΈʹʮ๻ͷ͔Μ͕͑ͨ࠷ڧͷ0CKFDUJWF$ʯʹࣅͨ4XJGUͱ͍͏ݴޠͰ ࡞ͬͨϥΠϒϥϦΛ͍͔ͭ͘ެ։͍ͯ͠ΔͷͰɺΈͳ͞Μ શͯͷϦϙδτϦʹελʔ͍ͩ͘͞ IUUQTHJUIVCDPNCBOO[BJ

  110. ͓͠·͍a ?P?