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
Objective-Cで書かれたアプリをSwift化したときの話
Search
kuroyam
June 08, 2016
Programming
4
410
Objective-Cで書かれたアプリをSwift化したときの話
shibuya.swift #4
kuroyam
June 08, 2016
Tweet
Share
More Decks by kuroyam
See All by kuroyam
iOS13でもSwiftUIでLazyなGridを実装したい! / use SwiftUI on iOS13
kuroyam
1
990
開発合宿で バーチャルオフィス を作ろうとしたお話 / Let's Babiniku !
kuroyam
0
1.7k
アプリ設計改善の旅路
kuroyam
1
920
途中からSwiftLint
kuroyam
1
560
Other Decks in Programming
See All in Programming
チームでモデリングを育てるうえで 考えたこと・気づいたこと / Cultivating Modeling in Teams: Thoughts and Insights
mackey0225
7
4.1k
Site Reliability Engineering for GMO
pyama86
6
840
今の SmartHR にエンジニアで入社するとどうなるの?
daisukeshinoku
5
4.6k
PostmanでAPIの動作確認が楽になった話
h455h1
0
110
App Router への移行は「改善」となり得るのか?/ Can migration to App Router be an improvement
takefumiyoshii
8
2.1k
SwiftUI Performance 不要なViewの再描画と更新を抑える
bigamitiongit
1
150
0→1と1→10の狭間で Javaという技術選定を振り返る/Reflecting on the Decision to Choose Java Between Scaling from 0 to 1 and 1 to 10
jaguar_imo
2
360
Ruby Function Composition
bkuhlmann
1
330
甘い香りに誘われてVanilla Extractを1年間運用してみた
miyahkun
1
110
[技育CAMPアカデミア]アイディアを形に!【超入門】スマホアプリ開発〜リリースまでの流れをご紹介
teamlab
PRO
0
340
1인 개발자로 행복하게 살기 - GDG 송도 헬로월드 2024
benjaminkim
1
5.6k
GitHub Actionsで泣かないためにやっておきたい設定 / Recommended GHA settings to avoid crying
pinkumohikan
3
480
Featured
See All Featured
Adopting Sorbet at Scale
ufuk
67
8.6k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
13
1.5k
Building an army of robots
kneath
300
41k
Agile that works and the tools we love
rasmusluckow
323
20k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
6
990
Fontdeck: Realign not Redesign
paulrobertlloyd
75
4.9k
Put a Button on it: Removing Barriers to Going Fast.
kastner
58
3k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
153
14k
The Power of CSS Pseudo Elements
geoffreycrofte
58
5k
Building Better People: How to give real-time feedback that sticks.
wjessup
353
18k
Product Roadmaps are Hard
iamctodd
43
9.7k
BBQ
matthewcrist
79
8.7k
Transcript
Objective-CͰॻ͔Ε ͨΞϓϦΛSwiftԽ͠ ͨͱ͖ͷ @ shibuya.swift #4
͜Μʹͪ • ࠇా ॣ (@kuroyam) • GMOϖύϘגࣜձࣾ • ϞόΠϧΞϓϦͳΜͰ͞Μ •
ήʔϜ → Android → iOS
ࠓ͢͜ͱ
30daysAlbum • ࣸਅڞ༗αʔϏε • iOS൛ϦϦʔε2011 ( iOS4 ~ 5 )
• WebαʔϏεͱͯ͠2008͔Β • 20148݄͔Β͕iOS୲(1ਓ)
ΛSwiftԽͨ͠ͱ͖ͷʂ
ϓϥΠϕʔτͰSwiftॻ͍ͯΔ ͚ͲɺࣄͰObjective-Cॻ ͍ͯΔɾɾɾͬͯਓ͚Ͱ͢
1. େมͩͬͨ͜ͱ 2. ͏·͍ͬͨ͘͜ͱ 3. ޙչͯ͠Δ͜ͱ ͷ3ͭΛ͠·͢
ͦͷલʹɾɾɾ
͖͔͚ͬ • ϓϥΠϕʔτͰSwiftΛॻ͍͍ͯͨΒ Objective-C͕ͭΒ͘ͳ͖ͬͯͨ • Լ͕͍ͬͯ͘Ϟνϕʔγϣϯ • ૣ͘ՈʹؼͬͯSwiftॻ͖͍ͨ
Ͳ͏ͤiOS൛։ൃͯ͠Δͷ ҰਓͳΜͩ͠ɺউखʹͬͨ Β͍͍ͷͰʂ
ݱࡏͰ • 1ը໘Λআ͍ͯViewController͕Swiftʹͳͬͨ • ModelΫϥε΄΅ͯ͢Swiftʹͳͬͨ • ͦͷଞɺԿΒ͔ͷλεΫܥΫϥεͱ͔ϢʔςΟ ϦςΟܥΫϥεObjective-Cͷ··
݁Ռͱͯ͠ • ίʔυॻ͖͍͢ʂಡΈ͍͢ʂ • ։ൃupʂ • όά͕ݮͬͨɺग़ʹ͘͘ͳͬͨ • σϝϦοτಛʹແ͠
େมͩͬͨ͜ͱ
iOS7 • ࣌Γ͍͚ͨͲແࢹͰ͖ͳׂ͍߹ͰiOS7 Ϣʔβʔ͕͍ͨ • SwiftͷϥΠϒϥϦΛ͍͍ͨɾɾɾʂ • Objective-CCocoapodsͰɺSwift git submodule
ͰೖΕͨ
ΓͮΒ͍ͱ͜Ζ • Ϟϯελʔ ViewController • 1000ߦ͕͑Ұຕ͋Δ • ؔ࿈͢ΔViewଟ͍ͷͰ͕͔͔࣌ؒΔ • ModelΫϥε
• มߋͨ࣌͠ͷӨڹൣғ͕͍ͷͰ͜Θ͍ • ςετ͕ͳ͍ɾɾɾ
Ͳ͏͠Α͏ͳ͔ͬͨͭ • Objective-C͔ΒSwiftͷenumΛ͍͍ͨ • Objective-C͔ΒSwiftͷInt?ɺBool?Λࢀর͠ ͍ͨ • ٽ͘ٽ͘ϥούʔΛ࡞ͬͨ
͏·͍ͬͨ͘͜ͱ
View͔Β࢝ΊΔ • ৽نͰViewΛ࡞Δͱ͖ʹࢼ͠ʹSwiftͰॻ͍ͯ Έͨͷ͕࠷ॳ • ଞʹൺͯখ͘͞ɾૄ݁߹ • ػೳ։ൃͷؒʹখ͍͞View͔ΒͲΜͲΜSwift Խ
نେ͖Ίͷ༷มߋ͕͋ͬͨ • API࡞Γ͠ʂ • ΞϓϦଆͷModel࡞Γ͟͞ΔΛಘͳ͔ͬͨ • ͔ͤͬ͘ͳͷͰSwiftͰ… • λΠϛϯά͕Α͔͚ͬͨͩ…
ઃܭͷݟ͠Ͱ͖ͨ • ੲiOSք۾ͰઃܭͷΛ͢Δਓͬͯগͳ͔ͬ ͨ • ͳͷͰҾ͖ܧ͍ͩ࣌Ͱͷ͍͢͝ײ͡ͷ ίʔυʹͳͬͯͯͭΒ͔ͬͨ • ͪΌΜͱͨ͠ઃܭʹͤΔνϟϯε
ޙչͯ͠Δ͜ͱ
࠷ॳSwiftతʹ͍͍ॻ͖ํͰ ॻ͚ͳ͔ͬͨ
nilνΣοΫ͔Βͷforce unwrap if user != nil { user!.hoge() }
optional bindingͷ΄͏͕Α͍ if let user = user { user.hoge() }
// ͘͠ guard let user = user else { return } user.hoge()
ϧʔϓΛ·Θͯ͠ݕࡧ for product in products { if product.id == id
{ return product } }
ߴ֊ؔ͏ͱҰߦͰॻ͚Δ return products.filter{ $0.id == id }.first
͍͖ͳΓγϡοͱͨ͠ίʔυॻ ͚ͳ͍ • ΑΓΑ͍ॻ͖ํΛݟ͚ͭͨΒݹ͍ίʔυؚ Ίͯվળ͢ΔΑ͏ʹͯ͠Δ • ෳਓͰΔͳΒنͱ͔͋Δͱ໎͍ͳͯ͘ ศརͦ͏ • ૉৼΓେࣄ
ͱΓ͋͑ͣOptionalܕ
ͱΓ͋͑ͣOptionalܕʹ͠ͱ͜… class Book { var id: Int? var title: String?
var author: String? var createdAt: NSDate? . . . }
ࢀর͢Δͨͼʹ optional binding͢Δͷ ΊͬͪΌΊΜͲ͍ʂ
ۃྗOptionalܕʹ͠ͳ͍ • DBଆͰNotNullͳΒOptionalܕʹ͢Δඞཁͳ ͍ͷͰ • null͕ೖ͍ͬͯͨΒͦͦόάͩʂΈ͍ͨͳ ͷOptionalܕʹ͠ͳ͍΄͏͕͍͍͔ʁʁ • ྻۭͰॳظԽ͢Δ΄͏͕Αͦ͞͏
·ͱΊ
Swift͍͍ͧ • େ͖ͳΞϓϦ؆୯ʹSwiftԽͰ͖ͳ͍͔ ͠Εͳ͍͚ͲɺͰ͖Δͱ͔͜Β࢝Ί͍ͯ͜͏ • φͳݴޠͳͷͰָ͘͠ɺ҆શʹॻ͚ΔɻϞ νϕʔγϣϯͬͯ݁ߏॏཁ • ීஈϓϥΠϕʔτͰSwiftॻ͍ͯΔͱɺۀʹ ׆͔ͤͯͱͯΑ͍
ଞͷͱ͜ͷฉ͖͍ͨʂ • ͏ͪ͜͏ͨ͠Β͏·͍ͬͨ͘ʂͱ͔ • ͜͜ͰϋϚ͔ͬͨΒؾΛ͚ͭΖʂͱ͔ • ΈΜͳͰڠྗͯ͠SwiftͰָ͘͠ίʔσΟϯά ͍͖ͯ͠·͠ΐ͏ʂ