Rx分からんを解消する会

社内勉強会での資料です。
RxSwiftについて開発メンバーから寄せられた質問に対して答える感じで用意した資料となります。

Transcript

1. Komerco Div
   2018.10.22(MON)
   Rx෼͔ΒΜΛղফ͢Δձ
   3Y෼͔ΒΜΛղফ͢Δձ
   4VHVSV,JTIJNPUP
   

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2. Cookpad Inc. All Rights Reserved.
   ࣄͷൃ୺
   

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3. Cookpad Inc. All Rights Reserved.
   

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4. Cookpad Inc. All Rights Reserved.
   

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5. Cookpad Inc. All Rights Reserved.
   ͻͬͦΓ΍Δͭ΋Γ͕ѹ͕͔͔ͬͨͷͰ
   ษڧձܗࣜͰ΍Δ͜ͱʹ
   

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6. Cookpad Inc. All Rights Reserved.
   ⚠ॾ஫ҙ⚠
   wدͤΒΕ࣭ͨ໰Λݩʹࢿྉ࡞ͬͯ·͢
   wޙ൒͸ࣗ༝࣌ؒʹ͢ΔͷͰΘ͍Θ͍ٞ࿦ͨ͠Γ͠·͠ΐ͏
   

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7. Cookpad Inc. All Rights Reserved.
   ૣ଎
   

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8. ʲQ1ʳ
   Observable,Observer,Subject,Relay,Signal,Driver…
   ͦΕͧΕͷ໾ׂͱ͔࢖͍ಓ͸?
   

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9. Cookpad Inc. All Rights Reserved.
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   ΔɺA؍ଌͰ͖Δ΋ͷAɻ

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   ΔͨΊʹɺ0CTFSWBCMFʹࣗ਎Λొ࿥ͨ͠ΓɺෆཁʹͳͬͨΒղআ
   ͨ͠Γ͢Δ
   

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10. Cookpad Inc. All Rights Reserved.
    Ҿ༻IUUQTRJJUBDPN.BTBOPCV"LJCBJUFNTBCEDDFF
    

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11. Cookpad Inc. All Rights Reserved.
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    w0CTFSWBCMF 5ZQF
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12. Cookpad Inc. All Rights Reserved.
    0CTFSWBCMF0CTFSWFS
    w0CTFSWFS 5ZQF
    গͳ͘ͳ͍ʁͦͯ͋͠·Γఆٛ͢Δ͜ͱͳ͍Μ͚ͩ
    Ͳʜ

    

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    ͷͰࣗ਎Ͱ0CTFSWFSΛੜ੒͢Δ͜ͱ͸গͳ͍͕ɺཪͰ͸࡞ΒΕͯ
    ͍Δ
    

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13. Cookpad Inc. All Rights Reserved.
    

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14. Cookpad Inc. All Rights Reserved.
    

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15. Cookpad Inc. All Rights Reserved.
    4VCKFDU3FMBZ
    w4VCKFDU0CTFSWBCMF5ZQF0CTFSWFS5ZQF

    ࣗ਎Ͱ஋Λྲྀ͢͜ͱ΋Ͱ͖Δ͠ɺ0CTFSWBCMFʹొ࿥ͯ͠஋Λड͚
    औΔ͜ͱ΋Ͱ͖Δ
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    w7BSJBCMFˠ 3Y4XJGUW͔Βඇਪ঑
    
    

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16. Cookpad Inc. All Rights Reserved.
    4VCKFDU3FMBZ
    w3FMBZ4VCKFDUͷϥούʔ
    w&SSPS $PNQMFUFE͕ྲྀΕͯ͜ͳ͍
    w1VCMJTI3FMBZ͸1VCMJTI4VCKFDUɺ#FIBWJPS3FMBZ͸#FIBWJPS4VCKFDU
    ͷϥούʔʹͳ͍ͬͯΔ
    w&SSPS $PNQMFUFE͕ྲྀΕͳ͍ͷͰɺ

    1VCMJTI3FMBZˠ4JHOBM

    #FIBWJPS3FMBZˠ%SJWFS

    ʹ؆୯ʹม׵Ͱ͖Δ
    

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17. Cookpad Inc. All Rights Reserved.
    4JOHMF.BZCF$PNQMFUBCMF
    w3Y4XJGUW͔Β౥ࡌ͞Εͨɺ0CTFSWBCMF&ͷᙱ͍ͱ͜ΖΛγʔϯ
    ผʹղܾͯ͘͠ΕΔ΋ͷɻͦΕͧΕFWFOU͸ճ͔͠ྲྀΕͳ͍
    wඞͣ&SSPS͔$PNQMFUFEͷͲͪΒ͔ͰऴΘΔ
    w/FYUͷྲྀΕΔճ਺͕ҧ͏
    w4JOHMFճ
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    w$PNQMFUBCMFճ
    

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18. Cookpad Inc. All Rights Reserved.
    %SJWFS4JHOBM
    w&SSPS͕ྲྀΕͳ͍
    wϝΠϯεϨουͰ࣮ߦ͞ΕΔ͜ͱ͕อূ͞Ε͍ͯΔ
    w%SJWFS͸4VCTDSJCFͨ࣌͠ʹ௚ۙͷ஋Λճྲྀ͢ ASFQMBZ
    A
    
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    w6*ʹབྷΉ෦෼Ͱ࢖͏ͷʹ΋͍ͬͯ͜
    w1SFTFOUFSˠ7JFXɺ7JFX.PEFMˠ7JFXͰΑ͘࢖͏
    

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19. Cookpad Inc. All Rights Reserved.
    ࢀߟ
    w3Y$PDPBͷ4JHOBMͱ3FMBZͷ·ͱΊ
    wIUUQTUFDINFSDBSJDPNFOUSZ
    w3Y4XJGUͷ༻ޠ·ͱΊ
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    &#
    

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20. ʲQ2ʳ
    `subscribe`, `bind`, `drive`, `emit`
    ͷ࢖͍෼͚͸?
    

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21. Cookpad Inc. All Rights Reserved.
    ͲΕ΋ߪಡ͢Δ࣌ʹ࢖͏΋ͷ͚ͩͲ
    ඍົʹੑ࣭͕ҟͳΔ
    

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22. Cookpad Inc. All Rights Reserved.
    ATVCTDSJCF PO/FYUʜ
    A
    wOFYU FSSPS DPNQMFUFE TVCTDSJCFE EJTQPTFEɺͦΕͧΕड͚औͬ
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    w4JOHMF .BZCF $PNQMFUBCMFʹͳΔͱड͚औΕΔ΋ͷ͕มΘΔ
    

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23. Cookpad Inc. All Rights Reserved.
    ACJOE UP
    A
    wྲྀΕΛଞͷετϦʔϜʹͭͳ͛Δ࣌ʹ࢖͏
    wҾ਺ʹ͸0CTFSWFS5ZQF΋͘͠͸3FMBZ͕ೖΔ

    ͕ɺϨγʔόͷ0CTFSWBCMF5ZQFʹΑͬͯएׯมΘΔ
    

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24. Cookpad Inc. All Rights Reserved.
    ACJOE PO/FYU
    A
    wOFYUΛड͚औͬͨͱ͖ͷॲཧΛهड़Ͱ͖Δ

    ATVCTDSJCF PO/FYU
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    wFSSPS͕ྲྀΕͯ͜ͳ͍લఏʹͳ͍ͬͯΔͷͰɺ %FCVH؀ڥͰ͸
    ྲྀΕ
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    w3FMBZΛTVCTDSJCF͢Δͱ͖͸ͬͪ͜Ͱॻ͘΄͏͕ؾ࣋ͪ୹͍ͷͰ
    γϯϓϧʹॻ͚Δ
    

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25. Cookpad Inc. All Rights Reserved.
    AESJWF @
    A AFNJU UP
    A
    wACJOE UP
    Aͷ%SJWFS4JHOBM൛
    wESJWF͸0CTFSWFS5ZQFɺ#FIBWJPS3FMBZͱ
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26. Cookpad Inc. All Rights Reserved.
    ESJWF FNJU AYY PO/FYU
    A
    
    wESJWF͸%SJWFSʹରͯ͠ɺFNJU͸4JHOBMʹରͯ͠࢖͏
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27. ʲQ3ʳ
    ΞϓϦͰΑ͘ݟΔ࣮૷ύλʔϯΈ͍ͨͷ͕
    ͋Ε͹஌Γ͍ͨͰ͢ɻ
    - MVVMͰUIͱVMΛόΠϯυ͢Δͱ͖ͱ͔ɻ
    - WebAPIୟ͍ͯUI·Ͱ൓өͤ͞Δ·ͰͷྲྀΕͱ͔ɻ
    

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28. Cookpad Inc. All Rights Reserved.
    ύλʔϯΛֶͿͷʹ͓͢͢Ί͸ͪ͜Β
    

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29. Cookpad Inc. All Rights Reserved.
    w3Y4XJGUͷ&YBNQMF
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30. Cookpad Inc. All Rights Reserved.
    .77.ͷྫΛऔΔͱʜ
    w7.ͷJOJUͰWJFXͷΠϕϯτΛ0CTFSWBCMFͱͯ͠౉͢͜ͱ͕ଟ͍

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    w7JFXͷΠϕϯτΛجʹɺ"1*ͷετϦʔϜΛܨ͍Ͱ͋͛ͯɺ݁Ռ΍
    ΤϥʔΛ%SJWFS΍4JHOBMΛ࢖ͬͯ౉ͯ͋͛͠Δ
    w7JFXଆͰ஋Λ͙͢ʹࢀর͍ͨ͠ͱ͖͸7.ʹ#FIBWJPS3FMBZΛ༻ҙ
    ͯ͠ɺASFMBZWBMVFAͰࢀর͢Δ
    

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31. ʲQ4ʳ
    ΩϨΠʹετϦʔϜΛ࡞Δʹ͸?
    

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32. Cookpad Inc. All Rights Reserved.
    ΩϨΠͳετϦʔϜΛ૊Ήʹ͸ɺ
    ετϦʔϜʹखΛՃ͑ΔΦϖϨʔλʔΛ
    ཧղ͢Δඞཁ͕͋Δ
    

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33. Cookpad Inc. All Rights Reserved.
    KVTU FSSPS FNQUZ OFWFS DSFBUF PG EFGFS
    GJMUFS NBQ [JQ DPNCJOF-BUFTU
    XJUI-BUFTU'SPN DPODBU NFSHF GMBU.BQ
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    ˞ݴޠʹΑͬͯඍົʹΦϖϨʔλʔ໊͕ҟͳͬͨΓ͢Δ৔߹͋Γ
    

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34. Cookpad Inc. All Rights Reserved.
    Ұ౓ʹ֮͑Δͷ͸େม
    গͣͭ͠ಈ࡞Λཧղ͠ͳ͕ΒਂΊ͍ͯ͘
    

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35. Cookpad Inc. All Rights Reserved.
    ʮͲ͔͜ʹ·ͱ·ͬͯͳ͍ͷʁʯ
    

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36. Cookpad Inc. All Rights Reserved.
    0QFSBUPSΛֶͿ
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37. Cookpad Inc. All Rights Reserved.
    

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38. Cookpad Inc. All Rights Reserved.
    ʮཧղ͢Δͱදݱͷ෯͕޿͕Δͷ͸ʁʯ
    

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39. Cookpad Inc. All Rights Reserved.
    KVTU FSSPS FNQUZ OFWFS DSFBUF PG EFGFS
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40. ࠓ͙͢࢖͑ΔςΫχοΫ
    

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41. Cookpad Inc. All Rights Reserved.
    ͦͷ̍
    AXJUI-BUFTU'SPNA
    

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42. Cookpad Inc. All Rights Reserved.
    

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43. Cookpad Inc. All Rights Reserved.
    TVCTDSJCFͷதͰTFMGࢀরͯ͠
    ଞͷετϦʔϜͷ஋Λͭͳ͛Δͷ͸ආ͚͍ͨ
    

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44. Cookpad Inc. All Rights Reserved.
    

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45. Cookpad Inc. All Rights Reserved.
    ετϦʔϜͱɺࢦఆͨ͠ετϦʔϜͷ௚ۙͷ஋Λ
    ͏·ͭ͘ͳ͛Δ͜ͱ͕Ͱ͖Δ
    

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46. Cookpad Inc. All Rights Reserved.
    ͦͷ
    A[JQA
    

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47. Cookpad Inc. All Rights Reserved.
    

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48. Cookpad Inc. All Rights Reserved.
    ࠩ෼ΛऔΔͷ͕؆୯ʹͳΔ
    

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49. Cookpad Inc. All Rights Reserved.
    ͦͷ
    ATDBOA ATUBSU8JUIA
    

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50. Cookpad Inc. All Rights Reserved.
    

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51. Cookpad Inc. All Rights Reserved.
    

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52. Cookpad Inc. All Rights Reserved.
    "1*ͰQBHFࢦఆͯ͠ಡΈࠐΜͰ݁ՌΛ
    ஷΊ͍ͯ͘ͷʹศར
    

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53. Cookpad Inc. All Rights Reserved.
    ͦͷ
    "DUJPO
    IUUQTHJUIVCDPN3Y4XJGU$PNNVOJUZ"DUJPO
    

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54. Cookpad Inc. All Rights Reserved.
    "DUJPO
    w3Y4XJGU$PNNVOJUZͰఏڙ͞Ε͍ͯΔ044
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    wADBUDI&SSPSA AEPAͱAAͷۤ͠Έ͔Βղ์ͯ͘͠ΕΔ
    

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55. Cookpad Inc. All Rights Reserved.
    

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56. Cookpad Inc. All Rights Reserved.
    "DUJPOΛ࢖͏ͱ͜͏ͳΔ
    

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57. Cookpad Inc. All Rights Reserved.
    

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58. Cookpad Inc. All Rights Reserved.
    ͦͷଞ ࿩͔ͨͬͨ͜͠ͱ
    
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    wTIBSF SFQMBZ
    
    w4DIFEVMFS
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59. Cookpad Inc. All Rights Reserved.
    ͕ͬͭΓಡΈͳ͕ΒֶͿͳΒ
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    wIUUQTTUPSFSBZXFOEFSMJDIDPNQSPEVDUTSYTXJGUSFBDUJWF
    QSPHSBNNJOHXJUITXJGU
    

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