SwiftFriendlyObjective-C/try! Swift Tokyo 2017 RejectCon

https://rmp-quipper.connpass.com/event/49316/

Transcript

1. SwiftϑϨϯυϦʔObjective-C @nolili Noritaka Kamiya
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
37. w $PDPBίʔσΟϯάΨΠυϥΠϯʹԊͬͯॻ͘
    w (FOFSBUFE
    *OUFSGBDFΛΈΔ
    w 4UBUJD
    "OBMZ[FSΛ׆༻͢Δ
    w 4XJGU͔ΒJNQPSUͯ͠ΈΔ
    w ͔͍͍ͬ͜0CKFDUJWF$͸4XJGU͔ΒΈͯ΋͔͍͍ͬ͜ ৺͕͚͍ͯΔ͜ͱ
38. SwiftϑϨϯυϦʔObjective-C @nolili Noritaka Kamiya