進化を続けるSwift-iOSに追随し続けるために

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1. ਐԽΛଓ͚ΔSwift/iOSʹ ௥ਵ͠ଓ͚ΔͨΊʹ 2016/08/29 AKIBA.swift×SwiftѪ޷ձ @ώΧϦΤ
2. ࣗݾ঺հ ɾKohei Tabata(@nerd0geek1) ɾSaib Studio LLC ɾiOS/MacOS/tvOS Developer ɾFastlaneେ޷͖ ɾ࠷ۙɺϥΠϒϥϦ࡞ΓʹϋϚ͍ͬͯ·͢ɻ Said Studio LLC Kohei Tabata Next! Remote quick-zip plus Sleeple
3. http://next.saib-stud.io
4. ͦΖͦΖळͰ͢Ͷɻ
5. ळͱ͍͑͹
6. ಡॻͷळ
7. ৯ཉͷळ
8. ӡಈͷळ
9. ৽OSͷळ
10. ͔͠΋ࠓ೥͸
11. OS/Swift͕ ಉ࣌Ξοϓσʔτʂ
12. Կ΋४උΛ ͍ͯ͠ͳ͍ͱ
14. ͲͷΑ͏ʹiOS/Swiftͷ ਐԽʹ௥ै͢Δ͔
15. ࣗ෼ͷऔΓ૊Έ ɾίΞػೳҎ֎ͷίʔυͷϞδϡʔϧԽ ɾςετʹΑΔૉૣ͍มߋݕ஌ ɾprotocolΛར༻࣮ͨ͠૷ͷந৅Խ ɾΦϒδΣΫτίϯϙδγϣϯ΍ ɹprotocol extensionΛར༻ͨ͠ෳࡶ͞ͷ௿ݮ
16. ίʔυͷϞδϡʔϧԽ ɾ΄ͱΜͲͷϓϩδΣΫτͰɺ࣮૷͢Δ͜ͱ͸͍͍ͩͨҰॹɻ ɾ൚༻తͳ෦෼ʹ͍ͭͯ͸ɺϥΠϒϥϦԽ͠ɺϞδϡʔϧͱͯ͠ ɹ͓͘͜ͱͰɺશϓϩδΣΫτʹ͓͍ͯDRYʹॻ͚Δɻ ɹʹOSɺSwiftͷมߋʹରͯ͠࠷খͷमਖ਼ͰରԠͰ͖Δɻ ɾIFఆٛˠ࣮૷ɾςετͷ௥ՃͷॱͰ࣮૷͢ΔͷͰɺૄ݁߹Ͱ ɹςελϒϧͳίʔυΛॻ͖΍͍͢ɻ
17. ͜Μͳײ͡ Next! Remote quick-zip plus Next! for Mac TableView Manager PlayList Player Swift Extensions Logger Pausable Timer
18. ςετʹΑΔૉૣ͍มߋݕ஌ ɾApple༷͸ɺ͠ΕͬͱഁյతมߋΛೖΕΔ͜ͱ͕͋Δɻ ɹSwift1.2→Swift2.0ͷStringͷpathૢ࡞ܥϝιουͷഇࢭ΍ ɹSwift2.0→Swift3.0ͷFoundationͷΫϥεˠߏ଄ମ΁ͷมߋͳͲɻ ɾςετΛ௥Ճ͢Δ͜ͱͰɺͦ͏͍ͬͨมߋʹΑΔڍಈͷมԽΛ ɹૉૣ͘ݕ஌Ͱ͖ΔΑ͏ʹͳΔɻ ɹ
19. protocolΛར༻࣮ͨ͠૷ͷந৅Խ ྫɿ͋ΔView΍ɺ͋ΔViewModel͕NSUserDefaults΍ ɹɹαʔυύʔςΟͷϥΠϒϥϦ΁ͷࢀরΛอ͍࣋ͯ͠Δ৔߹ ɹˠϞδϡʔϧ͕֎෦ʹґଘ͢ΔͨΊɺςετͰ͖ͳ͍ɻ ɹɹςετͰ͖ͨͱͯ͠΋஗͔ͬͨΓɺޙ࢝຤͕େมɻɻɻ ViewModel A NSUserDefaults ViewModel B Dropbox SDK
20. protocolΛར༻࣮ͨ͠૷ͷந৅Խ ྫɿ͋ΔView΍ɺ͋ΔViewModel͕NSUserDefaults΍ ɹɹαʔυύʔςΟͷϥΠϒϥϦ΁ͷࢀরΛอ͍࣋ͯ͠Δ৔߹ ɹˠϞδϡʔϧ͕֎෦ʹґଘ͢ΔͨΊɺςετͰ͖ͳ͍ɻ ɹɹςετͰ͖ͨͱͯ͠΋஗͔ͬͨΓɺޙ࢝຤͕େมɻɻɻ
21. protocolΛར༻࣮ͨ͠૷ͷந৅Խ ɾඞཁͳػೳΛ࣋ͭprotocolΛఆٛ(͜͜Ͱ͸LocalConfigType)ɻ ɾViewModel͔Β͸protocolΛࢀরɻ ɾ࣮૷Ͱ͸ɺNSUserDefaultsΛ಺෦Ͱࢀর͢ΔLocalConfigΛ౉͢ ɾςετͰ͸ɺLocalConfigMockͰϞοΩϯά͢Δɻ ViewModel A var config: LocalConfigType protocol LocalConfigType NSUserDefaults LocalConfig: LocalConfigType LocalConfigMock: LocalConfigType var dictionary: [String: AnyObject] ϓϩμΫγϣϯίʔυ ςετ
22. protocolΛར༻࣮ͨ͠૷ͷந৅Խ ɾprotocolΛར༻࣮ͨ͠૷ͷந৅Խɺґଘੑͷ஫ೖʹ͍ͭͯ͸ ɹલهͷΑ͏ʹ࣮૷Ͱ͖Δ͕ɺSwiftͷframework΋ଘࡏ͍ͯ͠Δɻ
23. protocolΛར༻࣮ͨ͠૷ͷந৅Խ ɾprotocolΛར༻࣮ͨ͠૷ͷந৅Խɺґଘੑͷ஫ೖʹ͍ͭͯ͸ ɹલهͷΑ͏ʹ࣮૷Ͱ͖Δ͕ɺSwiftͷframework΋ଘࡏ͍ͯ͠Δɻ ɾSwinjectɿେن໛ϓϩδΣΫτͰͷ؅ཧʹ޲͍͍ͯΔͱͷ͜ͱɻ
24. ΦϒδΣΫτίϯϙδγϣϯͱ protocol extensionͰෳࡶ͞Λ௿ݮ
25. ࣮ࡍͷϓϩμΫτΛྫʹ ϑΝΠϧҰཡը໘ Ϋϥ΢υ্ͷ ϑΝΠϧҰཡը໘ Ϋϥ΢υ΁Ξοϓϩʔυ͢Δ ϑΝΠϧͷબ୒ը໘ ϑΝΠϧҠಈը໘
26. ந৅Խ͢Δͱ A D C B
27. ѱ͍ઃܭ جఈΫϥε(ViewController) - ڞ௨ίϯϙʔωϯτͷ࡞੒ - ڞ௨ॲཧͷ࣮ߦ αϒΫϥε - ಠࣗίϯϙʔωϯτͷ࡞੒ - ίϯϙʔωϯτͷϨΠΞ΢τ - ಠࣗॲཧͷ࣮ߦ
28. ѱ͍ઃܭ͕ͳͥѱ͔͔ͬͨ ɾαϒΫϥεΛฤू͢ΔࡍʹɺجఈΫϥεͷ࣮૷Λؾʹ͢Δඞཁ͕ ɹ͋Δɻ ɾશମͱͯ͠ີ݁߹ʹͳ͍ͬͯΔͨΊɺΞʔΩςΫνϟͷมߋ͕ ɹ͔ͳΓ΍Γʹ͍͘ɻ ɾجఈΫϥε͕ԿͰ΋͔ΜͰ΋஌͍ͬͯΔঢ়ଶʹͳͬͯ͠·ͬͯ ɹ͍ͨ(Ұ෦ͷαϒΫϥεͰ͔͠࢖Θͳ͍ॲཧ΋͋ͬͨΓɻɻɻ)
29. ܧঝ͔Βίϯϙδγϣϯ ɾ਌ΫϥεΛ࡟আ ɾUIͷڞ௨෦෼ΛΧελϜViewΫϥεͱͯ͠੾Γग़͢ ɾجఈΫϥε಺ͷॲཧ͸ɺҰ୴ɺ֤ViewController΁
30. Կ͕ྑ͘ͳ͔ͬͨʁ ɾίʔυશମͷݟ௨͕͠Α͘ͳͬͨɻ ɾGenericʹؔ࿈ͨ͠ॲཧΛॻ͖΍͘͢ͳͬͨɻ ɾमਖ਼ͷࡍʹݟΔ΂͖είʔϓ͕ڱ·ͬͨɻ ɾҰ࿈ͷViewControllerͷ݁߹౓͕Լ͕ͬͨ ɹ(਌ࢠؔ܎͕ͳ͘ͳͬͨͨΊ)ɻ ɾͨͩ͠ɺશମͱͯ͠ͷίʔυྔ͸͔ͳΓ૿͑ͨɻɻɻ
31. ͲΜͳίʔυ͕૿͔͑ͨ ɾಉ͡ػೳ͕ͩશͯͷΫϥεͰར༻͠ͳ͍ίʔυɻ ɹෳ਺ͷΫϥε͕ڠௐͯ͠1ͭͷػೳͱͳΔΑ͏ͳίʔυɻ ྫɿRepositoryͷૢ࡞Λߦ͍ɺͦͷ݁Ռͱͯ͠ViewΛߋ৽͢Δ ɾUIViewController͔Βݺ͹ΕΔ͜ͱ͕લఏͱͳ͍ͬͯΔίʔυ ɹ(UIAlertControllerͳͲɻΧελϜViewʹدͤΔ͜ͱ͕Ͱ͖ͳ͍) ɾViewControllerͷ੹຿Ͱ͋Δ΂͖ίʔυɻ ɹ(ViewɺModelɺViewModelͷશͯͱؔ܎͢Δ)
32. protocol extensionͷద༻ ɾෳ਺ͷViewControllerؒͰͷڞ௨ॲཧͷIFΛprotocolͱͯ͠ఆٛ ྫɿRepositoryΛૢ࡞͠ɺViewʹ൓ө͢Δϝιου ɹɹRepositoryͷΠϯελϯε(computed property) ɹɹViewͷΠϯελϯε(computed property) ɾprotocol extensionͰڞ௨ͷৼΔ෣͍Λ࣮૷
33. protocol extensionͷద༻ ɾ֤ViewControllerʹprotocolΛద༻ɻ ɹcomputed propertyʹ͸ɺ֤ViewController಺ͷΠϯελϯεΛ ɹ౉͢ →࣮૷͔Β෼཭ͯ͠ৼΔ෣͍Λڞ௨ԽͰ͖ͨʂ
34. ·ͱΊ - ϥΠϒϥϦԽͯ͠ίʔυͷ࠶ར༻ੑΛߴΊͯ - ςετέʔεͷ௥ՃʹΑΓɺมߋ΁ڧͯ͘͠ - DIͳͲͰ݁߹౓Λ௿͘͠ɺ - ద੾ͳσβΠϯύλʔϯΛબ୒ͯ͠ϓϩδΣΫτͷෳࡶ͞Λ௿ݮ ͢Δ͜ͱͰSwift/iOSͷਐԽʹ௥ै͠΍͘͢ͳΔ͔΋ɻɻɻʁ
35. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ
36. ࢀߟ ɾSwinject/Swinject ɹ(https://github.com/Swinject/Swinject)