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SwiftFriendlyObjective-C/try! Swift Tokyo 2017 RejectCon
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Noritaka Kamiya
February 28, 2017
Programming
1
780
SwiftFriendlyObjective-C/try! Swift Tokyo 2017 RejectCon
https://rmp-quipper.connpass.com/event/49316/
Noritaka Kamiya
February 28, 2017
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Transcript
SwiftϑϨϯυϦʔObjective-C @nolili Noritaka Kamiya
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Swift❤ Objective-C❤
try! Swift SwiftϑϨϯυϦʔObjective-C
try! Swift EXC_BAD_INSTRUCTION
try! Swift EXC_BAD_INSTRUCTION Rejected
Swift❤ Objective-C❤
جຊ
Nullability
@interface Memo : NSObject @property (nonatomic) NSDate *createdAt; @property (nonatomic)
NSString *text; @property (nonatomic) NSArray *images; @end Nullability
Nullability open class Memo : NSObject { open var createdAt:
Date! open var text: String! open var images: [Any]! }
@interface Memo : NSObject @property (nonatomic, nonnull) NSDate *createdAt; @property
(nonatomic, nonnull) NSString *text; @property (nonatomic, nonnull) NSArray *images; @end Nullability
open class Memo : NSObject { open var createdAt: Date
open var text: String open var images: [Any] } Nullability
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
LightWeight Generics
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
open class Memo : NSObject { open var createdAt: Date
open var text: String open var images: [Any] } Nullability
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
LightWeight Generics open class Memo : NSObject { open var
createdAt: Date open var text: String open var images: [UIImage] }
ΞϊςʔγϣϯͰSwiftଆؾ࣋ͪΛද໌͢Δ
Blocks / Closure
memo.save { _ in } TrailingClosure typedef void (^SomeCompletionHandler)(NSString *);
@interface Memo : NSObject - (void)save:(SomeCompletionHandler)handler; @end
Closure typedef void (^SomeCompletionHandler)(NSString *); @interface Memo : NSObject -
(void)save:(nullable SomeCompletionHandler)handler; @end memo.save()
noescape typedef void (^SomeCompletionHandler)(NSString *); @interface Notes : NSObject +
(void)save:(__attribute__((noescape)) SomeCompletionHandler)handler; @end memo.save { _ in someSelfMethod() // self. ෆཁ }
Error/Exception
Error + (BOOL)send:(NSError **)error; open class func send() throws
@throw @try @catch @finally
@throw @try @catch @finally X
w $PEJOH(VJEFMJOFTGPS$PDPBʹԊͬͯॻ͘ w (FOFSBUFE*OUFSGBDFΛΈΔ w 4UBUJD"OBMZ[FSΛ׆༻͢Δ w 4XJGU͔ΒJNQPSUͯ͠ΈΔ w ͔͍͍ͬ͜0CKFDUJWF$4XJGU͔ΒΈ͔͍͍ͯͬ͜
৺͕͚͍ͯΔ͜ͱ
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w $PDPBίʔσΟϯάΨΠυϥΠϯʹԊͬͯॻ͘ w (FOFSBUFE*OUFSGBDFΛΈΔ w 4UBUJD"OBMZ[FSΛ׆༻͢Δ w 4XJGU͔ΒJNQPSUͯ͠ΈΔ w ͔͍͍ͬ͜0CKFDUJWF$4XJGU͔ΒΈ͔͍͍ͯͬ͜
৺͕͚͍ͯΔ͜ͱ
SwiftϑϨϯυϦʔObjective-C @nolili Noritaka Kamiya