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
860
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
3.3k
WWDC Pre meeting
nolili
1
3.4k
FastLane with Swift
nolili
0
140
App Transport Securityとローカルネットワーキング/iOSDC Japan 2017
nolili
1
1.4k
iOS Test Night #4
nolili
0
3.8k
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
2.3k
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
1.9k
Other Decks in Programming
See All in Programming
『GO』アプリ データ基盤のログ収集システムコスト削減
mot_techtalk
0
140
Datadog Workflow Automation で圧倒的価値提供
showwin
1
140
Grafana Loki によるサーバログのコスト削減
mot_techtalk
1
140
技術を改善し続ける
gumioji
0
110
1年目の私に伝えたい!テストコードを怖がらなくなるためのヒント/Tips for not being afraid of test code
push_gawa
1
500
Generating OpenAPI schema from serializers throughout the Rails stack - Kyobashi.rb #5
envek
1
350
Kotlinの開発でも AIをいい感じに使いたい / Making the Most of AI in Kotlin Development
kohii00
4
820
Jakarta EE meets AI
ivargrimstad
0
310
もう僕は OpenAPI を書きたくない
sgash708
5
1.9k
Formの複雑さに立ち向かう
bmthd
1
930
責務と認知負荷を整える! 抽象レベルを意識した関心の分離
yahiru
8
1.3k
データベースのオペレーターであるCloudNativePGがStatefulSetを使わない理由に迫る
nnaka2992
0
230
Featured
See All Featured
Into the Great Unknown - MozCon
thekraken
35
1.6k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
Making Projects Easy
brettharned
116
6k
Adopting Sorbet at Scale
ufuk
74
9.2k
Measuring & Analyzing Core Web Vitals
bluesmoon
6
250
The Pragmatic Product Professional
lauravandoore
32
6.4k
Code Review Best Practice
trishagee
67
18k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.7k
The MySQL Ecosystem @ GitHub 2015
samlambert
250
12k
Optimising Largest Contentful Paint
csswizardry
34
3.1k
Code Reviewing Like a Champion
maltzj
521
39k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
44
7k
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