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
エラーと警告で コードをデザインする ~赤と黄の輪舞曲~
Search
Yuka Ezura
August 20, 2016
Technology
6
4.1k
エラーと警告で コードをデザインする ~赤と黄の輪舞曲~
iosdc での発表資料です
Yuka Ezura
August 20, 2016
Tweet
Share
More Decks by Yuka Ezura
See All by Yuka Ezura
Mastering share sheet preview
ezura
4
1.4k
SF Symbols
ezura
9
1.3k
気遣いの iOS プログラミング
ezura
11
3.5k
Secret Swift tour
ezura
7
2.9k
Swift Album ver.4.1
ezura
3
1.5k
Swift と Kotlin
ezura
4
2.7k
哲学とSwiftの発表
ezura
5
600
アプリが動いたその先へ (iOS アプリ開発編)
ezura
1
1k
Blending Kotlin's culture into Swift
ezura
1
1.3k
Other Decks in Technology
See All in Technology
Delta airlines®️ USA Contact Numbers: Complete 2025 Support Guide
airtravelguide
0
340
AWS認定を取る中で感じたこと
siromi
1
190
敢えて生成AIを使わないマネジメント業務
kzkmaeda
2
450
Sansanのデータプロダクトマネジメントのアプローチ
sansantech
PRO
0
160
LangChain Interrupt & LangChain Ambassadors meetingレポート
os1ma
2
320
United airlines®️ USA Contact Numbers: Complete 2025 Support Guide
unitedflyhelp
0
310
Lazy application authentication with Tailscale
bluehatbrit
0
210
Flutter向けPDFビューア、pdfrxのpdfium WASM対応について
espresso3389
0
130
LLM時代の検索
shibuiwilliam
2
170
SaaS型なのに自由度の高い本格CMSでサイト構築と運用のコスパ&タイパUP! MovableType.net の便利機能とユーザー事例のご紹介
masakah
0
110
AIの全社活用を推進するための安全なレールを敷いた話
shoheimitani
2
520
KubeCon + CloudNativeCon Japan 2025 Recap
ren510dev
1
390
Featured
See All Featured
Visualization
eitanlees
146
16k
Java REST API Framework Comparison - PWX 2021
mraible
31
8.7k
Writing Fast Ruby
sferik
628
62k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
5.9k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.8k
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2.1k
Code Review Best Practice
trishagee
69
18k
The Pragmatic Product Professional
lauravandoore
35
6.7k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
20k
How to train your dragon (web standard)
notwaldorf
95
6.1k
Transcript
έϮ⑲ͺຓ θ⑲ώΤόλΩϸͫΝ _᧬ͺԫᇷዛູ_ 2016/8/20 ezura
FSSPS͜ṽͫ͟͝Ħ
XBSOJOH͜ṽͫ͟͝Ħ
None
None
None
Δͩ͘ͼΛj
Δ͵ͺ᪇͡ ཱͺᲇձ͖ͱ͝͵ͱj
ဒᘥ ࣮ḝ ᙉණ
͟ΝĈ ᦉᷯΔ͔Ν
࣮ḝ᧸ͽុΜΤ᧬ͺԫᓸ ᓸͣΑΐͩΙ͘
έϮ⑲ͺຓ θ⑲ώΤόλΩϸͫΝ _᧬ͺԫᇷዛູ_
↟1IBOUPN5ZQF ↟%FDMBSBUJPO"UUSJCVUFT
$BTF
class HogeOperation { /// Ұ͚ͩݺͿ͜ͱ func prepare() /// prepare ޙ͔Β͑Δ
func execute() /// ͍ͭݺΜͰྑ͍ func mob() }
/// Ұ͚ͩݺͿ͜ͱ /// prepare ޙ͔Β͑Δ
private var isPrepared = false /// Ұ͚ͩݺͿ͜ͱ func prepare() {
guard !isPrepared else { fatalError("prepare() Λෳݺͳ͍͜ͱ") } isPrepared = true }
None
None
όλΩϸͩΚ͘Ĉ
1IBOUPN5ZQF ܕใΛར༻ͯ͠ॲཧͷޡΓΛࢦఠՄೳʹ
ᴰᨷঢ়ỪΑ ᑿᠭ൱ၙͼϦςψώΤᨷᤅ
protocol OperationState {} class Init: OperationState {} class Prepared: OperationState
{}
class HogeOperation<State: OperationState> {}
extension HogeOperation where State: Init { /// Ұ͚ͩݺͿ͜ͱ func prepared()
-> HogeOperation<Prepared> { let readyOp = HogeOperation<Prepared>() // TODO: ඞཁͳσʔλΛҾ͖ܧ͗ return readyOp } }
θϸϖΩϰέϮ⑲ ỹ ỹ
None
extension HogeOperation where State: Prepared { /// prepare ΛݺΜͩޙ͔Β༻Մೳ func
execute() { /* do somethig */ } }
θϸϖΩϰέϮ⑲
ଓ͟8FC https://gist.github.com/ezura/ f5aebef7bb86edbfd40b0bd1d0435e00
1IBOUPN5ZQF͖Ο͖Ο ↟ 'VODUJPOBM4OJQQFU1IBOUPN5ZQFT ↟ 4XJGU.POFZXJUI1IBOUPN5ZQFT ↟ 4XJGU1IBOUPN5ZQF ྶṞ ↟
1IBOUPN5ZQFθϸϖΩϰᙉͽঢ়ᴋφάψδͫΝ TIJCVZBTXJGU ↑ ঢ়ଶભҠΛ៉ྷʹදݱ͍ͯͯ͠ײಈ
$BTF
/// ΘΓʹ fuga Λ͏͜ͱʂ func hoge() { … }
όλΩϸͩΚ͘Ĉ
%FDMBSBUJPO "UUSJCVUFT ใΛ༩
/// ΘΓʹ fuga() Λ͏͜ͱʂ @available(*, unavailable, message="͓ޚ໔͞…(ƅωƅ)", renamed="fuga") func hoge()
{ … }
/// ΘΓʹ fuga() Λ͏͜ͱʂ @available(*, unavailable, message="͓ޚ໔͞…(ƅωƅ)", renamed="fuga") func hoge()
{ … }
/// ΘΓʹ fuga() Λ͏͜ͱʂ @available(iOS, deprecated=1, message="͓ޚ໔͞…(ƅωƅ)", renamed="fuga") func hoge()
{ … }
ᬋණ ↟ !BWBJMBCMF ↟ !EJTDBSEBCMF3FTVMU 4XJGU͝Λ ↟ !XBSO@VOVTFE@SFTVMU 4XJGUഇᬬ
: Swift3 ͔ΒҰ෦༷͕มߋ͞Ε·͢
ᓸͣ ͖ͣͯͫ͘͝Ħ
ͦਗ਼ௌ͔Μ͞ͺ͖ͦͨ͘ΐͩͱĈ