Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
SwiftFriendlyObjective-C/try! Swift Tokyo 2017 ...
Search
Noritaka Kamiya
February 28, 2017
Programming
1
940
SwiftFriendlyObjective-C/try! Swift Tokyo 2017 RejectCon
https://rmp-quipper.connpass.com/event/49316/
Noritaka Kamiya
February 28, 2017
Tweet
Share
More Decks by Noritaka Kamiya
See All by Noritaka Kamiya
キラリと光るテクニック、アプリをデモするときの心構え/iOSDC Japan 2018
nolili
4
3.4k
WWDC Pre meeting
nolili
1
3.4k
FastLane with Swift
nolili
0
160
App Transport Securityとローカルネットワーキング/iOSDC Japan 2017
nolili
1
1.5k
iOS Test Night #4
nolili
0
4k
iOSアプリ開発のCI/CD環境とユビレジでのtry / CI CDNight
nolili
1
1.7k
ユビレジiOSアプリ開発のCI/CD環境 / iOS Test Night #1
nolili
5
2.4k
Modern Core Data(iOS 10)
nolili
0
1.3k
iOS I/O 2016 アクセサリといっしょ
nolili
1
2k
Other Decks in Programming
See All in Programming
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
360
AIコーディングAgentとの向き合い方
eycjur
0
270
Swift Updates - Learn Languages 2025
koher
2
470
testingを眺める
matumoto
1
140
MCPとデザインシステムに立脚したデザインと実装の融合
yukukotani
4
1.4k
意外と簡単!?フロントエンドでパスキー認証を実現する WebAuthn
teamlab
PRO
2
740
Flutter with Dart MCP: All You Need - 박제창 2025 I/O Extended Busan
itsmedreamwalker
0
150
Go言語での実装を通して学ぶLLMファインチューニングの仕組み / fukuokago22-llm-peft
monochromegane
0
120
Zendeskのチケットを Amazon Bedrockで 解析した
ryokosuge
3
300
プロポーザル駆動学習 / Proposal-Driven Learning
mackey0225
2
1.3k
デザイナーが Androidエンジニアに 挑戦してみた
874wokiite
0
340
詳解!defer panic recover のしくみ / Understanding defer, panic, and recover
convto
0
240
Featured
See All Featured
Context Engineering - Making Every Token Count
addyosmani
2
40
It's Worth the Effort
3n
187
28k
The Cost Of JavaScript in 2023
addyosmani
53
8.9k
Being A Developer After 40
akosma
90
590k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Visualization
eitanlees
148
16k
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
126
53k
Measuring & Analyzing Core Web Vitals
bluesmoon
9
580
YesSQL, Process and Tooling at Scale
rocio
173
14k
How to Think Like a Performance Engineer
csswizardry
26
1.9k
Optimizing for Happiness
mojombo
379
70k
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
Transcript
SwiftϑϨϯυϦʔObjective-C @nolili Noritaka Kamiya
None
None
None
None
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
None
None
None
None
w $PDPBίʔσΟϯάΨΠυϥΠϯʹԊͬͯॻ͘ w (FOFSBUFE*OUFSGBDFΛΈΔ w 4UBUJD"OBMZ[FSΛ׆༻͢Δ w 4XJGU͔ΒJNQPSUͯ͠ΈΔ w ͔͍͍ͬ͜0CKFDUJWF$4XJGU͔ΒΈ͔͍͍ͯͬ͜
৺͕͚͍ͯΔ͜ͱ
SwiftϑϨϯυϦʔObjective-C @nolili Noritaka Kamiya