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͋͋͏͑(@_kwzr_) iOS Apple Dev Tutorialsͱ pointfreeͷϞμϯ࣮૷Λൺֱ͢Δ

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ࣗݾ঺հ • ͋͋͏͑(@_kwzr_) • ॴଐ: ৽نࣄۀ෦ɾCTOࣨσβΠϯγεςϜ෦ • ࢓ࣄ: ଟ෼iOSΤϯδχΞ • झຯ: εϓϥɾ͓ֆ͔͖

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iOS։ൃΛֶͿʹ͸...

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AppleͷνϡʔτϦΞϧ΍ͬͱ͍ͯʂ

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AppleͷνϡʔτϦΞϧΛ ΍͍ͬͯͩ͘͞

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iOS Apple Dev Tutorials • SwiftUIͱUIKitͷνϡʔτϦΞϧ͕͋Δ • εςοϓ͝ͱʹஸೡͳઆ໌ • ϖʔδͷ࠷ޙʹ͸໰୊͕͋Γɺཧղ౓ ΛνΣοΫͰ͖Δ https://developer.apple.com/tutorials/app-dev-training

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Scrumdinger(Standups) • SwiftUI൛Ͱ࣮૷͞Ε͍ͯΔΞϓϦ • λΠϚʔΛઃఆͰ͖ͨΓɺձٞͷ಺༰Λ࿥Ի ͨ͠ΓɺࢀՃऀΛه࿥Ͱ͖ΔΞϓϦ

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νϡʔτϦΞϧͰֶͿ͜ͱ • ϨΠΞ΢τ(VStack, HStack...) • ΞΫηγϏϦςΟରԠํ๏ • ϞσϧΛ࡞ͬͯListʹ൓ө • ը໘ભҠ(NavigationStack) • ঢ়ଶ؅ཧ(@State, @Binding, ObservableObject, ...) • ϥΠϑαΠΫϧ(onAppear, onDisappear)

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νϡʔτϦΞϧͰֶͿ͜ͱ • Swift Concurrency • File ManagerΛ࢖ͬͨӬଓԽ • গ͠ൃలతͳඳը(PathͳͲ) • Τϥʔը໘ͷදࣔ • OSͷAPIݺͼग़͠(Speech framework΍ݖݶͷڐՄ) • ͳͲ

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(΋͏͜Ε࢓ࣄ͡ΌΜ)

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iOSΞϓϦ։ൃΛֶͼ͍ͨਓʹ ͱͯ΋͓͢͢Ίʂʂ

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νϡʔτϦΞϧ͸΍ͬͨɺ͜ͷઌͲ͏͢Ε͹... • UIKitͱֶ͔ͼ͍ͨ → UIKitνϡʔτϦΞϧɺpixivͷνϡʔτϦΞϧ • ΞʔΩςΫνϟͱ͔ςετͱ͔ • യવͱɺΑΓྑ͍ίʔυΛॻ͖͍ͨͱ͔

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pointfreeͷϞμϯ࣮૷ͱൺ΂Δ

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pointfreeco/standups • TCAΛ࡞͍ͬͯΔpointfree͕࡞͍ͬͯΔ • ScrumdingerΛΑΓϞμϯʹॻ͍ͯΈͨϓϩδΣΫτ

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Ϟμϯ #ͱ͸

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ϓϩδΣΫτߏ੒Λൺֱ͢Δ

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φϏήʔγϣϯपΓͷൺֱ

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ϓϩδΣΫτߏ੒ΛݟΔ • 2ͭͷϓϩδΣΫτ͕͋ͬͨ • StackBased • TreeBased

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StackBased vs TreeBased • StackBased • AppViewͰNavigationStack(path:)ΛݟͯɺϧʔςΟϯά • TreeBased • ֤View͔ΒnavigationDestinationΛ࢖֤ͬͯը໘ʹભҠ͍ͯ͠Δ • ͦΕͧΕϝϦσϝ͋Γɺ͜Ε͕׬શਖ਼ղͱ͍͏΋ͷ͸ݱঢ়ͳ͍

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ঢ়ଶϕʔεͷφϏήʔγϣϯʹ͍ͯ͠Δ • pointfreeco/swiftui-navigation • SwiftUIͷը໘ભҠͷ໰୊Λղܾ͍ͯ͠ΔϥΠϒϥϦ • NavigationLink΍TabView͸ঢ়ଶͱը໘ભҠ͕ඥ͔ͮͳ͍ • ྻڍܕΛ࢖ͬͯը໘ભҠͰ͖ΔΑ͏ʹ͍ͯ͠Δ • DeepLinkͳͲΛ͠΍͘͢ͳΔ

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ςετͷൺֱ

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ςετίʔυ͕ॻ͔Ε͍ͯΔ • AppleͷνϡʔτϦΞϧʹςετ͸ॻ͔Ε͍ͯͳ͍͕ɺpointfreeͷํ͸ ςετ͕ॻ͔Ε͍ͯΔ • ViewModelతͳ΍ͭͷϢχοτςετ • ςετΛॻ͚ΔΑ͏ʹ͍ͯ͠Δ(େࣄ)

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ViewͷϩδοΫɾঢ়ଶʹؔ͢Δςετ͕ॻ͚Δ • جຊతʹViewͷϢχοτςετΛॻ͘ͷ͸೉͍͠ • ϥΠϒϥϦΛ࢖͏ͳͲ͢Ε͹Ͱ͖Δ͕... • https://github.com/nalexn/ViewInspector • Ұൠతͳํ਑: ViewModelతͳ΋ͷΛ࡞ΓɺϩδοΫͱঢ়ଶʹؔ͢Δς ετΛॻ͘

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Apple νϡʔτϦΞϧͰςετΛॻ͍ͯΈΔ • MeetingViewͰ࢖ΘΕ͍ͯΔScrumTimerΫϥε͸λΠϚʔ + ݱࡏͷൃ දऀͷঢ়ଶΛ࣋ͭModel • ޾͍ɺViewʹঢ়ଶ͕΂ͬͨΓॻ͔Ε͍ͯΔײ͡Ͱ͸ͳ͔ͬͨͷͰɺλΠ Ϛʔ+ঢ়ଶͷςετΛॻ͚ͨ

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pointfreeͷtimerͷςετ • Dateͷ୅ΘΓʹclockΛ࢖͍ɺςετίʔυͰ࣌ؒΛਐΊΒΕΔΑ͏ʹ ͍ͯ͠Δ

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Dependency InjectionΛ͍ͯ͠Δ • pointfreeco/swift-dependencies

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swift-dependencies͕ͳ͍ͱ͖ • ී௨ʹ΍Δͱςετ༻ͷϞοΫΛࠩ͠ࠐΜͩΓ͢ΔͨΊʹɺί ϯετϥΫλͳͲͰΠϯελϯεΛ౉ͨ͠Γ͢Δඞཁ • ໘౗ɻόέπϦϨʔ͠ͳ͖Ό͍͚ͳ͍࣌͸΋ͬͱ໘౗

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஋ͷఏڙ • SpeechClientͷΠϯελϯεΛఏڙ ͍ͨ͠৔߹͸ӈͷΑ͏ʹॻ͘ • ςετ༻ɺϓϨϏϡʔ༻ͷ஋Λఏڙ Մೳ

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• @Dependency(\.speechClient)ͰSpeechClientͷΠϯελϯεΛऔͬͯ དྷͯ͘ΕΔΑ͏ʹ • Property WrapperͰ࢖͑ͯศར • Clock΍UUIDͳͲɺΑ͘࢖͏΋ͷΛඪ४Ͱఏڙ swift-dependencies͕͋Δͱ͖

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ͦͷଞ

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SpeechRecognizer • ݩʑͷSpeechRecognizer • Ի੠ೝࣝ݁ՌΛड͚औΔ + ݁ՌΛอ࣋͢Δ AppleͷνϡʔτϦΞϧ

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pointfree൛ SpeechClient • AsyncThrowingStreamͰྲྀ͚ͩ͢ʹ͍ͯ͠Δ

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ࡉ͔͍ॻ͖ํͳͲ • ViewଆͰ࢖͏༻ʹInt, Doubleͷ ϓϩύςΟΛ࡞͍ͬͯΔ • গࠞ͠ཚͦ͠͏ AppleͷνϡʔτϦΞϧ

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Durationܕͷ࢖༻ • Durationܕ(iOS 16+)ʹஔ͖׵Θ͓ͬͯΓɺformatͳͲ͸ViewଆͰߦͬͯ ͍Δ pointfreeͷ࣮૷

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• iOS 16͔Β࢖͑Δγϯϓϧͳ΋ͷʹ DocumentDirectoryͷऔಘํ๏

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Previewͷઆ໌จ • ϓϨϏϡʔͷઆ໌จΛදࣔ͢ΔViewΛࠩ͠ࠐΜͰ͍Δ

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࿔ΒΕ͍ͯͳ͔ͬͨ৔ॴ • SwiftUIͷView͸ಛʹมߋͯ͠ͳͦ͞͏ • ݩ͔Β͔ͳΓ៉ྷʹ࡞ΒΕ͍ͯΔͱࢥͬͨ

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͕࣌ؒͳͯ͘࿩ͤͳ͔ͬͨͱ͜Ζ • Identi fi edArrayͷ࿩ • pointfreeతʹ͸ਪ͠ϙΠϯτͬΆ͍ • ύϑΥʔϚϯε͕ߴ͍ListΛॻ͖΍͘͢ • Ϟνϕʔγϣϯͷจ຺Λ࿩͚ͩ͢Ͱֻ͕͔࣌ؒͬͯ͠·͏ • Sendableॻ͍ͯͨΓ

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Ϟμϯͱ͸ • ΑΓྑ͍φϏήʔγϣϯ • DeepLink͠΍͘͢ • ςελϏϦςΟ • DI • ੹຿ͷ෼ׂ • ύϑΥʔϚϯε • Identi fi edArray • ΑΓ୹͘ॻ͚ΔAPI

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Apple࣮૷ͷ؆ܿ͞΋ྑ͍ • ΞϓϦ։ൃ࢝Ίͨͯͷਓ͕ύϑΥʔϚϯε΍ςελϏϦςΟΛؾʹ͢͠ ͗ͯԿ΋࣮૷Ͱ͖ͳ͘ͳΔͷ΋Α͘ͳ͍

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ͳΜͱTCA൛࣮૷΋͋Δ

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TCAͷExamplesʹStandups͕௥Ճ͞Εͨ • pointfreeco/swift-composable-architecture • 5݄ʹϦϦʔε͞ΕͨTCAͷNavigationػೳͱڞʹStandupsͷαϯϓϧ ΋௥Ճ͞Εͨ

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pointfreeco/standupsͷඍົ͞Λײ͡Δ఺ TreeBasedͷίʔυ͕ͩɺStackBasedͰ΋ࣅͨΑ͏ͳ͜ͱΛ΍͍ͬͯΔ

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pointfreeco/standupsͷඍົ͞Λײ͡Δ఺ TreeBasedͷίʔυ͕ͩɺStackBasedͰ΋ࣅͨΑ͏ͳ͜ͱΛ΍͍ͬͯΔ ↓ͳΜ͔ॻ͖๨Εͦ͏

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• ࢠ(ભҠઌ)ͷΞΫγϣϯ΋Reducer಺ͷenumͰ໢ཏతʹॻ͚Δ TCA

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TCA͍͍ͧ (झࢫ͕ͣΕ͖ͯͦ͏) ͜Ε͚ͩͰ͸ͳ͍͚Ͳ...

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·ͱΊ • AppleͷνϡʔτϦΞϧ࣮૷ͱpointfreeͷϞμϯ࣮૷Λൺֱͨ͠ • ςελϏϦςΟ΍ύϑΥʔϚϯεΛҙࣝ͢Δ͜ͱͰϞμϯͳ࣮૷ʹɻ࣮ ૷͸ެ։͞Ε͍ͯΔͷͰൺֱͯ͠ΈΑ͏ʂ

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AppleͷνϡʔτϦΞϧ΍ͬͱ͍ͯʂ ↑ͪͳΈʹ͜ͷਓ͸ΤΞϓɻνϡʔτϦΞϧ΍ͬͨ͜ͱ͋Γ·ͤΜ

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ࢀߟ • https://www.pointfree.co/blog/posts/99-modern-swiftui • pointfreeͷ༗ྉهࣄ͸ཧղͷ֬ೝͷΈʹ࢖ͬͯ·͢