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
Laravel Boost 超入門
fire_arlo
3
220
旅行プランAIエージェント開発の裏側
ippo012
2
930
Kiroで始めるAI-DLC
kaonash
2
620
Amazon RDS 向けに提供されている MCP Server と仕組みを調べてみた/jawsug-okayama-2025-aurora-mcp
takahashiikki
1
110
Cache Me If You Can
ryunen344
2
3k
私の後悔をAWS DMSで解決した話
hiramax
4
210
プロパティベーステストによるUIテスト: LLMによるプロパティ定義生成でエッジケースを捉える
tetta_pdnt
0
3.3k
MCPでVibe Working。そして、結局はContext Eng(略)/ Working with Vibe on MCP And Context Eng
rkaga
5
2.3k
Testing Trophyは叫ばない
toms74209200
0
890
「手軽で便利」に潜む罠。 Popover API を WCAG 2.2の視点で安全に使うには
taitotnk
0
870
AIでLINEスタンプを作ってみた
eycjur
1
230
RDoc meets YARD
okuramasafumi
4
170
Featured
See All Featured
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3k
Docker and Python
trallard
46
3.6k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
358
30k
Facilitating Awesome Meetings
lara
55
6.5k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
Making the Leap to Tech Lead
cromwellryan
135
9.5k
Imperfection Machines: The Place of Print at Facebook
scottboms
268
13k
Speed Design
sergeychernyshev
32
1.1k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
A designer walks into a library…
pauljervisheath
207
24k
Music & Morning Musume
bryan
46
6.8k
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