今なら言える、クラスメソッドとSwiftの歴史〜開発現場の光と闇〜

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2017/04/28 ࠓͳΒݴ͑Δɺ ΫϥεϝιουͱSwiftͷྺ࢙ ʙ։ൃݱ৔ͷޫͱҋʙ େࡕΦϑΟε։ઃ1प೥ษڧձ

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About Me

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• ాத ޹໌ (Takaaki Tanaka) • Ϋϥεϝιουגࣜձࣾ • ϞόΠϧόοΫΤϯυ • @kongmingtrap • Swift / Objective-C / Scala / JavaScript … • GyazSquare / GitHub

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ؓ࿩ٳ୊

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Introduction

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Introduction •Objective-CͰͷiOSͷ։ൃྺ͕໿3೥ •Swift͸ɺ΄΅ະܦݧ •Ұ͔ΒSwiftͰ࡞ΒΕͨϓϩδΣΫτʹܞ ΘΓ͔ͨͬͨ •Ver 1ͷࠒͷSwift͸҆ఆ͍ͯ͠ͳ͔ͬͨͨ ΊɺσϦόϦʔ༏ઌͰObjective-C͕࠾༻ ͞Ε͍ͯͨ

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Introduction •Objective-CͰͷiOSͷ։ൃྺ͕໿3೥ •Swift͸ɺ΄΅ະܦݧ •Ұ͔ΒSwiftͰ࡞ΒΕͨϓϩδΣΫτʹܞ ΘΓ͔ͨͬͨ •Ver 1ͷࠒͷSwift͸҆ఆ͍ͯ͠ͳ͔ͬͨͨ ΊɺσϦόϦʔ༏ઌͰObjective-C͕࠾༻ ͞Ε͍ͯͨ Ϋϥεϝιου΁స৬

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Classmethod with Swift

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http://dev.classmethod.jp/smartphone/swift/

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http://amzn.asia/dnXD7zd ਡ๚ ༔ل

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Introduction •ೖࣾ౰ॳ(2015೥10݄)ͷ࣌఺Ͱ͸Swiftͷϓϩ δΣΫτ͸1ͭͷΈ •ͦͷϓϩδΣΫτΛ୲౰ͤͯ͞΋Βͬͨ •͍͔ͭ͘ͷػೳͷ௥ՃΛ୲౰ •લ೚ऀ͸όοΫΤϯυ୲౰ͱͳ͍ͬͯͨʢPlay / Scalaʣ

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Agenda

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Agenda

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Agenda •Contact with Architecture •Battle with Swift version •Delivery is ﬁrst priority •Battle with Swift version, second

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Agenda •Contact with Architecture •Battle with Swift version •Delivery is ﬁrst priority •Battle with Swift version, second

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Contact with Architecture

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https://www.objc.io/issues/13-architecture/viper/ Architecting iOS Apps with VIPER

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https://www.slideshare.net/UsrNameu1/viper-arch VIPER ΞʔΩςΫνϟʹΑΔ iOS ΞϓϦͷઃܭ

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Contact with Architecture •σϦόϦʔ༏ઌͷ։ൃܦݧ͕ଟ͔ͬͨͨΊɺ ϚογϒViewController΋ڐ༰͞Ε͕ͪͩͬͨ •ϨΠϠʔԽ͞ΕͨΫϦʔϯͳΞʔΩςΫνϟ͸ ࢐৽ͩͬͨ •ςετίʔυ͕ॆ࣮͍ͯͨ͠

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Contact with Architecture •iOS 7΋αϙʔτ͍ͯͨͨ͠ΊɺҰ෦ͷϥΠϒϥ Ϧ͕CocoaPodsʹରԠ͍ͯ͠ͳ͔ͬͨ •CocoaPodsʹରԠ͍ͯ͠ͳ͔ͬͨϥΠϒϥϦ͸ Submoduleܦ༝ͰΠϯϙʔτ͍ͯͨ͠ •ϑΝΠϧ਺͕ଟ͍ҝɺΞʔΩςΫνϟΛཧղ͠ ͳ͍ͱɺमਖ਼ʹ͕͔͔࣌ؒͬͨ

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• CargoBay • CorePlot • MBProgressHUD • UICKeyChainStore • JASidePanels • MagicalRecord • BlocksKit/UIKit • BlocksKit/MessageUI • Alamofire • SwiftyJSON • BrightFutures • OHHTTPStubs • Quick • Nimble

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http://dev.classmethod.jp/smartphone/swift-brightfutures-1/

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Future / Promise Future ͸ฒྻʹ࣮ߦ͞ΕΔෳ਺ͷԋࢉΛऔΓѻ͏ͷʹศརͳ ํ๏Λఏڙ͢ΔɻͦΕ͸ޮ཰తͰϊϯϒϩοΩϯάͳํ๏ͩɻ େ·͔ͳߟ͑ํ͸γϯϓϧͳ΋ͷͰɺFuture ͸·ͩଘࡏ͠ͳ͍ ܭࢉ݁Ռʹର͢ΔϓϨʔεϗϧμͷΑ͏ͳ΋ͷͩɻ Ұൠత ʹɺFuture ͷ݁Ռ͸ฒߦʹܭࢉ͞ΕޙͰूܭ͢Δ͜ͱ͕Ͱ͖ Δɻ ͜ͷΑ͏ʹฒߦͳλεΫΛ߹੒͢Δ͜ͱͰɺΑΓ଎͘ɺ ඇಉظͰɺϊϯϒϩοΩϯάͳฒྻίʔυͱͳΔ͜ͱ͕ଟ͍ɻ http://docs.scala-lang.org/ja/overviews/core/futures.html

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http://docs.scala-lang.org/ja/overviews/core/futures.html

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open func postWaveformWithLead( _ lead: Lead, subjectiveSymptoms: [Checkup.SubjectiveSymptom]?, createDate: Date, saving: Bool, waveformData: Data) -> Future { let waveformUUID = UUID().uuidString return createLocalWaveformWithUuid( waveformUUID, lead: lead, subjectiveSymptoms: subjectiveSymptoms, createDate: createDate, waveformData: waveformData) .flatMap { [weak self] _ -> Future in self?.uploadWaveformDatumWithLead( lead, subjectiveSymptoms: subjectiveSymptoms, createDate: createDate, saving: saving, waveformData: waveformData ) ?? Future(error: InteractorCancelError) } .flatMap { [weak self] json -> Future in self?.executeTaskAfterUploadWithJson(json, uuid: waveformUUID) ?? Future(error: InteractorCancelError) } }

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ͳΜͰ#PMUT͡Όͳ͍ΜͰ͢ ͔ʁ

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ͳΜͰ#PMUT͡Όͳ͍ΜͰ͢ ͔ʁ ඇಉظॲཧ͸'VUVSFͰॻ͚ ͹ඒ͍͠

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ΞοϋΠ ඇಉظॲཧ͸'VUVSFͰॻ͚ ͹ඒ͍͠

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http://dev.classmethod.jp/server-side/scala-concurrent-future/

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http://dev.classmethod.jp/server-side/scala-learn-ﬂatmap/

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ͳΜͰ3Y4XJGU͡Όͳ͍Μ Ͱ͔͢ʁ

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ͳΜͰ3Y4XJGU͡Όͳ͍Μ Ͱ͔͢ʁ ඇಉظॲཧ͸'VUVSFͰॻ͚ ͹ඒ͍͠

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ͳΜͰ3Y4XJGU͡Όͳ͍Μ Ͱ͔͢ʁ ඇಉظॲཧ͸'VUVSFͰॻ͚ ͹ඒ͍͠

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Contact with Architecture •ར༻͢ΔϥΠϒϥϦ͸νʔϜϝϯόʔͱϨ Ϗϡʔ͢Δ͜ͱ͸ඞਢ •ϚογϒViewControllerʹͳΒͳ͍Α͏ɺΞʔΩ ςΫνϟͷಋೖ͸ۃྗߦ͏ •ͲͷΞʔΩςΫνϟΛಋೖ͢Δ͔͸νʔϜͱσ ϦόϦʔͱ૬ஊ

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Battle with Swift version

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Swift 2.1 • Xcode 7 + iOS 9 SDKͰϏϧυ͕Մೳ • Swift 2.x ܥͷAPIσβΠϯ • try / catch͕௥Ճ • Ұ෦ͷϓϩύςΟ͕Optionalʹͳͬͨ(SDK) • Dynamic LibraryରԠ(Xcode 7)

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Migration • Xcode 7.1Ͱىಈͨ͠ࡍɺաڈͷSwift όʔ δϣϯͷ৔߹͸Convertը໘͕ىಈ͢Δ • ʮEdit > Convert > To Current Swift Syntax.ʯ Ͱ΋࣮ߦՄೳ

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Migration • Xcode 7.1Ͱىಈͨ͠ࡍɺաڈͷSwift όʔ δϣϯͷ৔߹͸Convertը໘͕ىಈ͢Δ • ʮEdit > Convert > To Current Swift Syntax.ʯ Ͱ΋࣮ߦՄೳ • Swift 1.2 → Swift 2.1ͷ࣌͸࢖͍΋ͷʹͳΒ ͳ͔ͬͨ ← New!

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஍ಓͳमਖ਼࡞ۀ • BrightFuturesͷFutureͷܕ͕มߋʹͳͬͨ ͷͰमਖ਼

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஍ಓͳमਖ਼࡞ۀ • Resultͷܕ͕มߋʹͳͬͨͷͰमਖ਼

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஍ಓͳमਖ਼࡞ۀ • Dynamic LibraryରԠ • iOS 7Λαϙʔτ͔Βআ֎ͨ͠

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஍ಓͳमਖ਼࡞ۀ • ϓϩύςΟͷOptionalରԠ

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஍ಓͳमਖ਼࡞ۀ • ExceptionͷthrowରԠ

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஍ಓͳमਖ਼࡞ۀ • map → forEachରԠ

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iOS 9ରԠʢATSରԠʣ • S3ʹஔ͍ͨϑΝΠϧ͕औಘͰ͖ͳ͘ͳͬͨ • Preparing Your Apps for iOS 9Λࢀߟʹ Info.plistΛमਖ਼

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Result

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Battle with Swift version • iOS 7ͷαϙʔτͷ༗ແ͕ͦͷޙͷ޻਺ʹ େ͖ͳӨڹΛ༩͑ͨ • Τϥʔɾܯࠂͷ਺͕ଟͯ͘ରԠʹ͕࣌ؒ ͔͔ͬͨ • Ϗϧυͷ଎౓্͕͕ͬͨʢVer 1.2 : 12min → Ver 2.1 : 3minʣ

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Delivery is ﬁrst priority

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Delivery is ﬁrst priority

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Battle with Swift version, second

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Swift 3.0 • NS Preﬁx͔Βͷ୤٫ • ৽ͨͳΔAPIσβΠϯΨΠυϥΠϯ

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Swift 3.0 • NS Preﬁx͔Βͷ୤٫ → Ұ෦࢒Γ·ͨ͠ ʢNSNumberʣ • ৽ͨͳΔAPIσβΠϯΨΠυϥΠϯ → طଘ ͷϥΠϒϥϦͷϝιου໊มΘΓ͗͢ • ABI҆ఆԽ → Swift 4·Ͱ଴ͬͯͶ

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ʊਓਓਓਓਓਓਓਓਓʊ ʼɹࢼ͞ΕΔ஧੣৺ɹʻ ʉ:?:?:?:?:?:?:?:ʉ

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Swift 2.3 • Xcode 8 + iOS 10 SDKͰϏϧυ͕Մೳ • Swift 2.x ܥͷAPIσβΠϯ • ͱΓ͋͑ͣٸ͍ͰiOS 10ͰϏϧυ͢Δඞཁ ͕͋Δ৔߹

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Swift 2.3 9DPEF3FMFBTF/PUFT • Xcode 8.2 ͕࠷ޙͷαϙʔτʹͳΔͨΊɺ Swift 3.0΁ͷରԠ͸ඞਢ

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Migration to Swift 3.0

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Swift 2.2΁ͷҠߦ • Xcode 7.2 + Swift 2.1 ͷ։ൃ؀ڥΛXcode 8.2 Ͱىಈͨ͠ࡍɺʮEdit > Convert > To Current Swift Syntax.ʯͷର৅ʹTarget͕දࣔ ͞Εͳ͔ͬͨ • ͱΓ͋͑ͣɺXcode 7.3ͰSwift 2.1͔ΒSwift 2.2΁Ҡߦͨ͠

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Migration • Xcode 8.2Ͱىಈͨ͠ࡍɺաڈͷSwift όʔδϣ ϯͷ৔߹͸Convertը໘͕ىಈ͢Δ • ʮEdit > Convert > To Current Swift Syntax.ʯͰ΋ ࣮ߦՄೳ • Swift 1.2 → Swift 2.1ͷ࣌͸࢖͍΋ͷʹͳΒͳ ͔ͬͨ

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ʊਓਓਓਓਓਓਓਓਓʊ ʼɹ$POWFSU'BJMFEɹʻ ʉ:?:?:?:?:?:?:?:?:?ʉ

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Migration • Xcode 8.2Ͱىಈͨ͠ࡍɺաڈͷSwift όʔδϣ ϯͷ৔߹͸Convertը໘͕ىಈ͢Δ • ʮEdit > Convert > To Current Swift Syntax.ʯͰ΋ ࣮ߦՄೳ • Swift 1.2 → Swift 2.1ͷ࣌͸࢖͍΋ͷʹͳΒͳ ͔ͬͨ • Swift 2.2 → Swift 3.0ͷ࣌΋࢖͍΋ͷʹͳΒͳ ͔ͬͨ ← New!

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ͦΕͰ΋ແ͍ΑΓ͸Ϛγ • UIKitͷmethodͷม׵ • Enumͷupper case → lower caseม׵ • NSPreﬁxͷϥΠϒϥϦͷม׵

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ͻͨ͢Β஍ಓͳ࡞ۀ • CurryԽͨ͠ϝιουͷमਖ਼ public static func log(level level: Level)(@autoclosure name: () -> String) (@autoclosure message: () -> String) -> String { if level.rawValue <= Logger.currentLevel.rawValue { let full = "\(level.description): \(name()) - \(message())" print(full) return full } return "" }

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ͻͨ͢Β஍ಓͳ࡞ۀ • CurryԽͨ͠ϝιουͷमਖ਼ public static func log(level: Level) -> ((@escaping () -> String) -> ((@escaping () -> String) -> String)) { return { (name: @escaping (() -> String)) in return { (message: @escaping (() -> String)) in if level.rawValue <= Logger.currentLevel.rawValue { let full = "\(level.description): \(name())) - \(message())" print(full) return full } return "" } } }

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ͻͨ͢Β஍ಓͳ࡞ۀ • closureʹ@escapingͷ௥Ճ

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ͻͨ͢Β஍ಓͳ࡞ۀ • Ҡߦπʔϧ͕ม׵ͨ͠Օॴͷमਖ਼ • Ωϟετ → Ωϟετ → Ωϟετ Date as NSDate as Date String as NSString as String

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ͻͨ͢Β஍ಓͳ࡞ۀ • Unit Testͷमਖ਼

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Result

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Result

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ﬁles additions deletions Ver 2.1 147 1268 1130 Ver 3.0 247 4314 4372 Pull Request Diff

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Battle with Swift version, second • Ͱ͖Ε͹ೋ౓ͱ΍Γͨ͘ͳ͍ • ίϯϑϦΫτղফͷͨΊɺݽಠͳ࡞ۀͱ ͳΔ • ஧੣৺Λࢼ͞ΕΔ

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Recap

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Recap •৽نϓϩδΣΫτ͸શͯSwiftʹ •ΞʔΩςΫνϟʹ͍ͭͯ૬ஊͰ͖Δ౔৕ ͕ܗ੒͞Εͨ •ΞʔϦʔΞμϓλʔͱͯ͠ɺ͖᪴ͳ͕Β΋ ϊ΢ϋ΢ΛͨΊ͍͚ͯΔ

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Recap •Swiftͷݴޠ࢓༷ͷมԽʹ൱Ԡͳ͠ʹରԠ ΛഭΒΕΔ •બ୒ͨ͠ΞʔΩςΫνϟʹΑͬͯ͸ҭ੒ ίετ͕ൃੜ͢Δ •σϦόϦʔΛ༏ઌ͠ͳ͚Ε͹ͳΒͳ͍ঢ় گ͸ඞͣൃੜ͢Δ

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Thank you!

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One more thing…

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ʲ େࡕΦϑΟε։ઃ1प೥!! ʳ Ϋϥεϝιουͷ։ൃΛ஌Δʂશ7ճษڧ http://dev.classmethod.jp/news/mobileteam-inosaka/

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ʲ େࡕΦϑΟε։ઃ1प೥!! ʳ Ϋϥεϝιουͷ։ൃΛ஌Δʂશ7ճษڧ http://dev.classmethod.jp/news/mobileteam-inosaka/

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We're hiring!!

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https://classmethod.jp/recruit/

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AWSࣄۀ෦ AWSΤϯδχΞʢAWSγεςϜ؀ڥͷߏஙࢧԉʣ AWSιϦϡʔγϣϯΞʔΩςΫτʢAWSγεςϜ؀ڥ ίϯαϧɾߏஙɾӡ༻ࢧԉʣ AWSΦϖϨʔγϣϯίϯαϧλϯτʢAWSγεςϜ؀ڥͷӡ༻ࣗಈԽࢧԉʣ AWSαʔϏεσϕϩούʔʢAWSΛ׆༻ͨ͠αʔϏε։ൃʣ  ϞόΠϧΞϓϦαʔϏε෦ iOS / AndroidΞϓϦ։ൃΤϯδχΞ ― ౦ژ / ࡳຈ / େࡕ ϞόΠϧόοΫΤϯυΤϯδχΞ ― ౦ژ / ࡳຈ / େࡕ DevOpsΤϯδχΞ ― ౦ژ / ࡳຈ / େࡕ ϓϩδΣΫτϚωʔδϟʔʢϞόΠϧΞϓϦʣ ― ౦ژ / େࡕ ݱࡏืूதͷ৬छ https://classmethod.jp/recruit/jobs/