Getting Started Combine

Combine をはじめよう

Mobile Act ONLINE #1
https://mobileact.connpass.com/event/181370/

ブログ記事
https://usami-k.hatenablog.com/entry/2020/07/23/214102

Transcript

1. Combine Λ͸͡ΊΑ͏ USAMI Kosuke 1/23
2. ࣗݾ঺հ • Ӊࠤݟ ެี • ϑΣϯϦϧגࣜձࣾʢେࡕຊࣾʣiOS ΤϯδχΞ • Mobile Act ओ࠵ • iOSDC ݪߘ४උத 2/23
3. Combine ͱ͸ 3/23
4. Combine ͱ͸ • Reactive Programming ͷϑϨʔϜϫʔΫ • RxSwift ΍ ReactiveSwift ͱಉྨ • ඇಉظॲཧΛॊೈʹهड़Ͱ͖Δ • Ϟσϧͱ UI ͷόΠϯσΟϯάΛهड़Ͱ͖Δ 4/23
5. ࡢ೥ൃද͞Εͯ࿩୊ʹͳͬͨ • Combine ͸ࡢ೥ͷ WWDC19 Ͱൃද͞Εͨ • ࿩୊ʹ͸ͳͬͨ΋ͷͷɺiOS 13 ͰͷΈ࢖༻Մೳ • → ࣮ࡍͷ։ൃʹద༻͠ʹ͔ͬͨ͘ • ͔͠͠ɺ1೥ͨͬͨݱࡏɺঢ়گ͸ҟͳΔ 5/23
6. iOS ΞϓϦͷ։ൃࣄ৘ • ཧ૝తʹ͸࠷৽ OS ͷΈΛαϙʔτ͍ͨ͠ • ͔࣮͠͠ࡍ͸ɺগ͠લͷ OS ͷαϙʔτΛཁ๬͞ΕΔ • ࠷৽ OS ͱͦͷ1ͭલͷ OS ·Ͱͷαϙʔτ͕ݱ࣮࿏ઢ • iOS 14 ϦϦʔεޙ͸ iOS 13 ʙ 14 ରԠ͸ݱ࣮త 6/23
7. Combine ͷݱঢ় • ࡢ೥࣌఺Ͱɺطʹ͋Δఔ౓੒ख़ͨ͠ϑϨʔϜϫʔΫͱ͍͑Δ • Reactive Programming ͸طʹ৽͍͠΋ͷͰ͸ͳ͍ • ࠓ೥ͷ௥Ճػೳ͸΄ͱΜͲͳ͍ 7/23
8. ଞͷϑϨʔϜϫʔΫͱͷൺֱ • طʹ Reactive Programming ϑϨʔϜϫʔΫ͸͋Δ • RxSwift : ReactiveX ܥ • ReactiveSwift : Swift ͷྑ͞Λ׆͔͍ͯ͠Δ • Combine ͷར఺ • αʔυύʔςΟ੡Ͱͳ͘ඪ४Ͱ͋Δ 8/23
9. ͳͥɺ͍· Combine Λ͸͡ΊΔͷ͔ • λΠϛϯά͕ͪΐ͏Ͳྑ͍ • iOS 13 Ҏ߱Λର৅ͱ͢Δ͜ͱ͕ݱ࣮తʹՄೳʹͳ͖ͬͯͨ • ͋Δఔ౓੒ख़ͨ͠ϑϨʔϜϫʔΫͰ͋Γ҆৺ͯ͠࢖͑Δ • ඪ४ϑϨʔϜϫʔΫͳͷͰαʔυύʔςΟґଘ͠ͳ͍ 9/23
10. UIKit / SwiftUI • Combine ͸ͲͪΒͱ΋૊Έ߹ΘͤΒΕΔ൚༻తͳ΋ͷ • ࠓ͸ UIKit ͷ૊Έ߹Θ͕ͤݱ࣮త • SwiftUI ͸ iOS 13 ରԠ͕ඞཁͳঢ়گͰ͸ػೳෆ଍ؾຯ • iOS 14 Ͱ͸େ͖͘վળ͍ͯ͠Δ 10/23
11. Combine Λֶ΅͏ 11/23
12. Combine Λֶ΅͏ • WWDC19 ͷηογϣϯ • ࠓͳΒ೔ຊޠࣈນ΋͋Δ • ༷ʑͳਓ͕هࣄ΍ॻ੶Λॻ͍͍ͯΔ • ࡢ೥ొ৔Ҏ߱Ͱ஫໨౓͕ߴ͍͜ͱ͕෼͔Δ • ଞͷϑϨʔϜϫʔΫͱͷ༻ޠͷҧ͍ʹ͸஫ҙ 12/23
13. ͳΜ͔ͩͪΐͬͱ೉ͦ͠͏ɾɾɾʁ • ͍͖ͳΓશ෦΍Ζ͏ͱͯ͠΋೉͍͔͠΋͠Εͳ͍ • Ͱ͖Δ͚ͩ؆୯ͳαϯϓϧίʔυΛߟ͑ͯΈ·͠ΐ͏ 13/23
14. ྫ : NotificationCenter let cancellable = NotificationCenter.default .publisher(for: NSControl.textDidChangeNotification, object: textField) .sink(receiveValue: { /* Πϕϯτॲཧ */ }) 14/23
15. ྫ : URLSession let cancellable = URLSession.shared .dataTaskPublisher(for: request) .sink(receiveValue: { /* Πϕϯτॲཧ */ }) 15/23
16. ڞ௨͢Δܗ͕͋Δ let cancellable = ԿΒ͔ͷΦϒδΣΫτ .publisher(for: ...) .sink(receiveValue: { /* Πϕϯτॲཧ */ }) 16/23
17. جຊܗ • Publisher ͕ΠϕϯτΛૹग़͢Δ • sink ͰΠϕϯτΛॲཧ͢Δ • sink ͸ Subscriber Λੜ੒͢Δ 17/23
18. Combine Λ࢖͏ҙຯ • ҎԼͷΑ͏ͳඇಉظॲཧΛ͢΂ͯ Combine Ͱॻ͚Δ • Target / Action • Notification Center • URL Session • Key-Value Observing • Callback 18/23
19. Combine ͷ3ͭͷجຊཁૉ • Publisher : ΠϕϯτΛૹग़͢Δ • Operator • Subscriber : ΠϕϯτΛॲཧ͢Δ 19/23
20. Operator Λ࢖͑Δͷ͕ڧΈ • ෳ਺ͷΠϕϯτΛ؂ࢹͯ͠ॲཧ͢ΔɺͳͲ͕؆୯ʹͳΔ • Zip • CombineLatest • ͳͲ 20/23
21. ิ଍ : UIControl ͷରԠ • UIButton ͳͲͷ Publisher ͕ඪ४Ͱ͸༻ҙ͞Ε͍ͯͳ͍ • ͜Ε͸ඪ४Ͱཉ͔ͬͨ͠ͱ͜Ζ͕ͩɾɾɾ • ΧελϜ Publisher Λ࣮૷ͯ͠ରԠ͢Δ • ࢀߟ : ʲSwiftʳCustom PublisherΛ࡞੒ͯ͠Combineϑ ϨʔϜϫʔΫͷಈ͖ΛֶͿ - @shiz ͞Μͷ Qiita هࣄ 21/23
22. ิ଍ : UIControl ͷରԠ ΧελϜ Publisher Λ࣮૷͢Ε͹ҎԼͷΑ͏ͳ͜ͱ͕Ͱ͖Δ let cancellable = button .publisher(for: ...) .sink(receiveValue: { /* Πϕϯτॲཧ */ }) 22/23
23. ·ͱΊ • Combine ͸͍·࢝ΊΔͷ͕ͪΐ͏Ͳྑ͍ • ͺͬͱݟͰ͸೉ͦ͠͏͕ͩجຊ͸؆୯ 23/23