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
ReactiveCocoa Pitfalls at freee
Search
Kenichi Yonekawa
October 18, 2014
Programming
2
850
ReactiveCocoa Pitfalls at freee
10/18にfreeeで開催されたReactiveCocoa TokyoのLT資料です
http://connpass.com/event/8680/
http://www.freee.co.jp/
Kenichi Yonekawa
October 18, 2014
Tweet
Share
More Decks by Kenichi Yonekawa
See All by Kenichi Yonekawa
iOSアプリの設計とDependency Injection
yonekawa
22
17k
Fluxで複雑な状態の変化を予測可能にするiOSアプリ開発
yonekawa
9
20k
ネイティブアプリでもFluxしたい
yonekawa
0
2.3k
freeeモバイルチームの変遷と進化
yonekawa
0
7.9k
RAC用クラス拡張の作り方
yonekawa
2
3k
Dive into Joybox
yonekawa
5
1.7k
Other Decks in Programming
See All in Programming
AI POSにおけるLLM Observability基盤の導入 ― サイバーエージェントDXインターン成果報告
hekuchan
0
660
アーキテクチャと考える迷子にならない開発者テスト
irof
8
3.1k
What's New in Web AI?
christianliebel
PRO
0
130
自動テストを活かすためのテスト分析・テスト設計の進め方/JaSST25 Shikoku
goyoki
3
690
Building AI with AI
inesmontani
PRO
0
200
高単価案件で働くための心構え
nullnull
0
150
CSC509 Lecture 13
javiergs
PRO
0
250
Bakuraku E2E Scenario Test System Architecture #bakuraku_qa_study
teyamagu
PRO
0
760
2025 컴포즈 마법사
jisungbin
0
130
Designing Repeatable Edits: The Architecture of . in Vim
satorunooshie
0
390
Nitro v3
kazupon
2
310
「10分以内に機能を消せる状態」 の実現のためにやっていること
togishima
1
500
Featured
See All Featured
Visualization
eitanlees
150
16k
Product Roadmaps are Hard
iamctodd
PRO
55
12k
Facilitating Awesome Meetings
lara
57
6.6k
Navigating Team Friction
lara
190
15k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
4.1k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
249
1.3M
We Have a Design System, Now What?
morganepeng
54
7.9k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
54k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.8k
Making Projects Easy
brettharned
120
6.5k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
24
1.6k
Speed Design
sergeychernyshev
32
1.2k
Transcript
ReactiveCocoa Pitfalls at freee @yonekawa
freeeͷiOSΞϓϦ͕ ReactiveCocoaΛಋೖ͔ͯ͠ Β̕ϲ݄͕ܦͪ·ͨ͠
• 2014/12/20 iOSΞϓϦ։ൃணख • 2014/01/10 ReactiveCocoaಋೖ • 2014/02/14 1.0.0ϦϦʔε
ʹҰମԿ͕ɾɾɾ
ReactiveCocoaΛ͍ͬͯͯ freeeͰى͖ͨ ϋϚΓͲ͜ΖΛհ͠·͢ : ReactiveCocoaͷAPI͕ͪΐ͍ͪΐ͍ग़͖ͯ·͢
combineLatestWith
combineLatestWithͱSignalͷ࣮ߦॱ • combineLatestWithฒྻʹSignalΛ࣮ߦ͢Δ ͷͰൃՐ͞ΕΔॱংෆఆɻϩάΠϯ͔ͯ͠Βσʔ λΛऔಘɺΈ͍ͨͳॲཧʹ͏ͱϋϚΔ • ྻʹ͍ͨ࣌͠ʹflattenMapΛ͏
rac_textSignal
rac_textSignal vs RACObserve • textϓϩύςΟʹೖ͢ΔΑ͏ͳέʔεͰγ άφϧ͕ൃՐ͠ͳ͍ɻRACObserveͰtextϓϩύ ςΟΛsubscribe͢ΔͱൃՐ͢Δ • ٯʹΩʔϘʔυ͔ΒͷೖྗRACObserveͩͱൃՐ ͠ͳ͍ɻrac_textSignalͰऔΒͳ͍ͱ͍͚ͳ͍
• combineLatestͯ྆͠ํൃՐ͢ΔsignalΛ࡞ͬ ͨΓͨ͠
sendCompleted
None
sendErrorͷޙͷsendCompleted • sendErrorͷޙʹsendCompletedΛݺΜͰݺ Εͳ͍ɻ • subscribe͢ΔଆͰnextͱerrorͰڞ௨ͰΓͨ ͍ॲཧʢΠϯδέʔλΛࢭΊΔͱ͔ʣΛॻ͖͍ͨ࣌ ʹݸผʹॻ͔ͳ͍ͱ͍͚ͳ͍
[RACSignal empty]
None
[RACSignal empty] • RACSignalϕʔεͰΓऔΓ͍ͯ͠Δ࣌ɺ [RACSignal empty]Λฦ͢ͱવnexterrorൃ Ր͞Εͳ͍ • subscribeલʹΠϯδέʔλΛճͯ͠nextͱerrorͰ ࢭΊ͍ͯΔ߹ɺΠϯδέʔλ͕ճΓͬͺͳ͠ʹͳΔ
• empty͡Όͳۭͯ͘ͷ݁ՌΛฦ͢SignalΛฦ͢ͷ͕Α ͦ͞͏
UITableView
Cellͷதʹsubscribe͍ͨ͠View͕͋Δ࣌ • ηϧ͕࠶ར༻͞ΕΔͱೋॏʹϑΥʔ ϜͷΠϕϯτΛsubscribeͯ͠ ͠·͏ • reloadͳͲߟ͑Δͱ subscriberΛഁغ͢ΔλΠϛϯ ά͕͍͠ •
ݱঢ়ۤͷࡦͰ࠶ར༻ΊͨΓ ͯ͠Δ
ReactiveCocoa3.0
ReactiveCocoa3.0 • LTͷͨΊʹແͯ͠ಋೖ͠Α͏ͱௐͨ • طଘͷRACSignalϕʔεͷΠϯλϑΣʔεΛ asColdSignalͱ͔Ͱ͖Δͷָͦ͏ͩͬͨ • υΩϡϝϯτແ͠Ͱ͍ํΛ୳Δͷ͍͠