TCAでのClient/Managerの 利用パターンでは副作用のActionやErrorを分離できる

iOSアプリ開発のためのFunctional Architecture情報共有会2 の発表資料です。
https://connpass.com/event/194239/

Transcript

1. TCAͰͷClient/Managerͷ
   
   
   ར༻ύλʔϯͰ͸෭࡞༻ͷ
   Action΍ErrorΛ෼཭Ͱ͖Δ
   iOSΞϓϦ։ൃͷͨΊͷFunctional Architecture৘ใڞ༗ձ2
   @yimajo 2020/11/22 #fa_ios
   

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2. The Composable Architecture ʹ͸
   ಛఆͷ෭࡞༻Λ·ͱΊΔΧελϜͳ
   Client/Managerܕͷαϯϓϧ͕͋Δ
   

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3. • DownloadClient
   
   
   • WebSocketClient
   
   
   • LocalSearchClient
   
   
   • WeatherClient
   
   
   • SpeechClient
   
   
   • AuthenticationClient
   
   
   • AudioPlayerClient
   
   
   • AudioRecorderClient
   • MotionManager
   
   
   • LocationManager
   

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4. State
   Action
   View
   Store
   DI
   Environment
   Client
   Effect
   Reducer
   Error
   "DUJPO
   

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5. State
   Action
   View
   Store
   DI
   Environment
   Client
   Effect
   Reducer
   Error
   "DUJPO
   

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6. State
   Action
   View
   Store
   DI
   Environment
   Client
   Effect
   Reducer
   Error
   "DUJPO
   

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7. State
   Action
   View
   Store
   DI
   Environment
   Client
   Effect
   Reducer
   Error
   "DUJPO
   

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8. State
   Action
   View
   Store
   DI
   Environment
   Client
   Effect
   Reducer
   Error
   "DUJPO
   

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9. State
   Action
   View
   Store
   DI
   Environment
   Client
   Effect
   Reducer
   Error
   "DUJPO
   

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10. State
    Action
    View
    Store
    DI
    Environment
    Client
    Effect
    Reducer
    Error
    "DUJPO
    

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11. Clientͷߏ੒
    

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12. ෭࡞༻࣮ߦΫϩʔδϟ
    ઐ༻ͷΤϥʔ
    ઐ༻ͷ"DUJPO
    

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13. $MJFOUͷ࣮ߦΛอ࣋͢Δ
    %FQFOEFODJFT
    

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14. TUBUJDMFUMJWFͰγϯάϧτϯతͳΠϯλϑΣʔε
    ෭࡞༻࣮ߦΫϩʔδϟDBODFMͷఆٛ
    ෭࡞༻࣮ߦΫϩʔδϟEPXOMPBEͷఆٛ
    

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15. MJWFͷݺͼग़͠͸&OWJSPONFOUͰ
    lMJWFzͷݴ༿ͷҙຯ͸Α͘Θ͔Βͳ͍
    QSFWJFXʹ΋MJWF͸࢖͏ͷͰຊ൪༻ͬͯҙຯͰͳ͍
    MJWF/VNCFS'BDU GPS
    ͳͲ͸୯ʹ௨৴͢Δ͚ͩɻ
    ؂ࢹͳͲΛ͍ͯ͠ΔΘ͚Ͱ΋ͳ͍ɻ
    GBWPSJUF JEJT'BWPSJUF
    ΋BTZOD"GUFSͳͷͰඇಉظॲཧ
    

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16. Clientͷ෭࡞༻࣮ߦΫϩʔδϟͷ
    
    
    ݺͼग़͠
    

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17. ෭࡞༻࣮ߦΫϩʔδϟEPXOMPBEͷ࣮ߦ
    

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18. ཧ۶ͱͯ͠ɺ$PSF.PUJPOͷ
    TUBSU%FWJDF.PUJPO6QEBUFT VTJOH UP
    
    ͜Ε͸୺຤ͷϞʔγϣϯΛݕ஌͢Δͱಈ࡞͢ΔΫϩʔδϟɻ
    ͜ͷ෭࡞༻࣮ߦΫϩʔδϟ͸֎෦͔Βݺ͹Εͣɺ
    ಺෦Ͱ4VCTDSJCFS͕ΠϕϯτΛTFOEͯ͘͠ΕΔɻ
    

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19. ෭࡞༻࣮ߦΫϩʔδϟͷ಺෦ݺͼग़͠
    • ࣗಈͰԿ͔Λ؂ࢹͯ͠มԽ͕͋ͬͨΒAction͕ݺͼग़ͤΔ
    
    
    • Motion
    
    
    • Location
    
    
    • Core DataͷFetch Result Controller
    

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20. %PXOMPBE$MJFOUͷ"DUJPOΛ3FEVDFSʹ఻͑Δ
    

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21. ·ͱΊ
    • Action/ErrorΛݸผʹఆٛ
    
    
    • ෭࡞༻࣮ߦΫϩʔδϟ
    
    
    • ΫϩʔδϟΛReducer͕֎෦ݺͼग़͠
    
    
    • Ϋϩʔδϟ಺෦Ͱউखʹ࣮ߦͤͨ͞Γ
    

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