SwiftFriendlyObjective-C/try! Swift Tokyo 2017 RejectCon

Transcript

1. SwiftϑϨϯυϦʔObjective-C @nolili Noritaka Kamiya

2. None
3. None
4. None
5. None

6. Swift❤ Objective-C❤

7. try! Swift SwiftϑϨϯυϦʔObjective-C

8. try! Swift EXC_BAD_INSTRUCTION

9. try! Swift EXC_BAD_INSTRUCTION Rejected

10. Swift❤ Objective-C❤

11. جຊ

12. Nullability

13. @interface Memo : NSObject @property (nonatomic) NSDate *createdAt; @property (nonatomic)

    NSString *text; @property (nonatomic) NSArray *images; @end Nullability

14. Nullability open class Memo : NSObject { open var createdAt:

    Date! open var text: String! open var images: [Any]! }

15. @interface Memo : NSObject @property (nonatomic, nonnull) NSDate *createdAt; @property

    (nonatomic, nonnull) NSString *text; @property (nonatomic, nonnull) NSArray *images; @end Nullability

16. open class Memo : NSObject { open var createdAt: Date

    open var text: String open var images: [Any] } Nullability

17. NS_ASSUME_NONNULL_BEGIN @interface Memo : NSObject @property (nonatomic) NSDate *createdAt; @property

    (nonatomic) NSString *text; @property (nonatomic) NSArray *images; @end NS_ASSUME_NONNULL_END Nullability

18. LightWeight Generics

19. LightWeight Generics NS_ASSUME_NONNULL_BEGIN @interface Memo : NSObject @property (nonatomic) NSDate

    *createdAt; @property (nonatomic) NSString *text; @property (nonatomic) NSArray *images; @end NS_ASSUME_NONNULL_END

20. open class Memo : NSObject { open var createdAt: Date

    open var text: String open var images: [Any] } Nullability

21. LightWeight Generics NS_ASSUME_NONNULL_BEGIN @interface Memo : NSObject @property (nonatomic) NSDate

    *createdAt; @property (nonatomic) NSString *text; @property (nonatomic) NSArray<UIImage *> *images; @end NS_ASSUME_NONNULL_END

22. LightWeight Generics open class Memo : NSObject { open var

    createdAt: Date open var text: String open var images: [UIImage] }

23. ΞϊςʔγϣϯͰSwiftଆ΁ؾ࣋ͪΛද໌͢Δ

24. Blocks / Closure

25. memo.save { _ in } TrailingClosure typedef void (^SomeCompletionHandler)(NSString *);

    @interface Memo : NSObject - (void)save:(SomeCompletionHandler)handler; @end

26. Closure typedef void (^SomeCompletionHandler)(NSString *); @interface Memo : NSObject -

    (void)save:(nullable SomeCompletionHandler)handler; @end memo.save()

27. noescape typedef void (^SomeCompletionHandler)(NSString *); @interface Notes : NSObject +

    (void)save:(__attribute__((noescape)) SomeCompletionHandler)handler; @end memo.save { _ in someSelfMethod() // self. ෆཁ }

28. Error/Exception

29. Error + (BOOL)send:(NSError **)error; open class func send() throws

30. @throw @try @catch @finally

31. @throw @try @catch @finally X

32. w $PEJOH
    (VJEFMJOFT
    GPS
    $PDPBʹԊͬͯॻ͘
    w (FOFSBUFE
    *OUFSGBDFΛΈΔ
    w 4UBUJD
    "OBMZ[FSΛ׆༻͢Δ
    w 4XJGU͔ΒJNQPSUͯ͠ΈΔ
    w ͔͍͍ͬ͜0CKFDUJWF$͸4XJGU͔ΒΈͯ΋͔͍͍ͬ͜

    ৺͕͚͍ͯΔ͜ͱ
33. None
34. None
35. None
36. None

37. w $PDPBίʔσΟϯάΨΠυϥΠϯʹԊͬͯॻ͘
    w (FOFSBUFE
    *OUFSGBDFΛΈΔ
    w 4UBUJD
    "OBMZ[FSΛ׆༻͢Δ
    w 4XJGU͔ΒJNQPSUͯ͠ΈΔ
    w ͔͍͍ͬ͜0CKFDUJWF$͸4XJGU͔ΒΈͯ΋͔͍͍ͬ͜

    ৺͕͚͍ͯΔ͜ͱ

38. SwiftϑϨϯυϦʔObjective-C @nolili Noritaka Kamiya