Swiftのクロージャーで苦労じゃ〜

Transcript

1. SwiftͷΫϩʔδϟʔͰ ۤ࿑͡Όʙ ͔Β·͛ˏ͏·͏·ͩΑ΋Μ

2. ࣗݾ঺հ ໊લɹ֟ຊڡষˏ͔Β·͛ ৬ۀɹϑϦʔϥϯεɾΤϯδχΞ WebΞϓϦ΍iOSΞϓϦΛ࡞Δ࢓ࣄΛ͍ͯ͠·͢ɻ ग़਎஍ɹ෱Ԭ Swift, Ruby,JS, AWS Lambda https://www.facebook.com/karamage.umauma

3. ࣗ༝ͳελΠϧͰ࢓ࣄͯ͠·͢ ΋;΋;͠ͳ͕Βϓϩάϥϛϯά

4. Swift ೉͍͠ ࢛ఱԦ Ẃࠈͷ$MPTVSF మนͷHVBSE ࠞಱͷ0QUJPOBM ັ࿭ͷQSPUPDPM

5. Ϋϩʔδϟʔ஌ͬͯ·͔͢ʁ Š
   8JLJQFEJBΑΓ
   Š
   ΫϩʔδϟʢΫϩʔδϟʔɺӳ
   DMPTVSFʣ
   ؔ਺ดแ͸ϓϩάϥϛϯάݴޠʹ͓͚Δؔ਺ΦϒδΣΫτͷҰछɻ
   ͍͔ͭ͘ͷݴޠͰ͸ϥϜμࣜ΍ແ໊ؔ਺Ͱ࣮ݱ͍ͯ͠Δɻ

6. ʂʁ

7. Ϋϩʔδϟʔͱ͸ؔ਺Ͱ͋Δɻ

8. Ϋϩʔδϟʔʹ͸໊લ͕ͳ͍

9. Ϋϩʔδϟʔ = ໊ແ͠ͷؔ਺

10. อଘ֬ೝΞϥʔτදࣔ

11. Ϋϩʔδϟʔ࢖ͬͯ·͔͢ʁ MFU
    EFGBVMU"DUJPO
    6*"MFSU"DUJPO
    
    
    
    
    
    6*"MFSU"DUJPO UJUMF
    0,
    TUZMF
    6*"MFSU"DUJPO4UZMF%FGBVMU
    
    
    
    
    IBOEMFS\
    
    
    
    
    
    
    
    
    
    Ϙλϯ͕ԡ͞Εͨ࣌ͷॲཧΛॻ͘ʢΫϩʔδϟ࣮૷ʣ
    
    
    
    
    
    
    
    
    BDUJPO
    6*"MFSU"DUJPO

    
    
    7PJE
    JO
    
    
    
    
    
    
    
    
    QSJOU 0,
    
    
    
    
    ^

12. ͜Ε͕Ϋϩʔδϟʔͩʂ MFU
    EFGBVMU"DUJPO
    6*"MFSU"DUJPO
    
    
    
    
    
    6*"MFSU"DUJPO UJUMF
    0,
    TUZMF
    6*"MFSU"DUJPO4UZMF%FGBVMU
    
    
    
    
    IBOEMFS\
    
    
    
    
    
    
    
    
    
    Ϙλϯ͕ԡ͞Εͨ࣌ͷॲཧΛॻ͘ʢΫϩʔδϟ࣮૷ʣ
    
    
    
    
    
    
    
    
    BDUJPO
    6*"MFSU"DUJPO

    
    
    7PJE
    JO
    
    
    
    
    
    
    
    
    QSJOU 0,
    
    
    
    
    ^

13. { -> in }ΛݟͨΒ Ϋϩʔδϟʔͩͱࢥ͑ MFU
    EFGBVMU"DUJPO
    6*"MFSU"DUJPO
    
    
    
    
    
    6*"MFSU"DUJPO UJUMF
    0,
    TUZMF
    6*"MFSU"DUJPO4UZMF%FGBVMU
    
    

    
    
    
    IBOEMFS\
    
    
    
    
    
    
    
    
    
    Ϙλϯ͕ԡ͞Εͨ࣌ͷॲཧΛॻ͘ʢΫϩʔδϟ࣮૷ʣ
    
    
    
    
    
    
    
    
    BDUJPO
    6*"MFSU"DUJPO
    
    7PJE
    JO
    
    
    
    
    
    
    
    
    QSJOU 0,
    
    
    
    
    ^

14. Ϋϩʔδϟʔͷॻ͖ํجຊ \
    QBSBNFUFST
    
    SFUVSO
    UZQF
    JO
    
    
    
    
    TUBUFNFOUT
    ^

15. Ϋϩʔδϟͷॻ͖ํ \ Ҿ਺Ҿ਺ͷܕ
    
    ໭Γ஋ͷܕ
    JO
    
    
    
    
    
    ॲཧ
    
    
    
    
    SFUVSO
    ໭Γ஋
    ^

16. ΫϩʔδϟʔͰHelloWorld Ϋϩʔδϟ
    WBS
    IFMMP8PSME$MPTVSF
    
    \
    
    
    
    
    
    JO
    
    
    
    
    QSJOU l)FMMP
    8PSME
    ^
    

    IFMMP8PSME$MPTVSF

17. ΫϩʔδϟʔͰɺ଍͠ࢉ 
    B
    
    C
    Λ଍ͨ݁͠ՌΛฦ͢ΫϩʔδϟΛBEE'VODʹ୅ೖ
    MFU
    BEE'VOD
    
    \
    B*OU
    C*OU
    
    *OU
    JO
    
    
    
    
    SFUVSO
    B
    
    C
    ^
    

    MFU
    SFTVMU
    
    BEE'VOD  
    QSJOUMO SFTVMU
    
    
    

18. Ϋϩʔδϟʔͷলུه๏ WBS
    D
    
    \
    
    JO
    QSJOU l)FMMPz
    ^
    লུͳ͠
    WBS
    D
    
    \
    7PJE
    JO
    QSJOU l)FMMPz
    ^
    

    ͱ7PJEಉ͡
    WBS
    D
    
    \
    
    JO
    QSJOU l)FMMPz
    ^
    ฦΓ஋ͷܕলུ
    WBS
    D
    
    \
    QSJOU l)FMMPz
    ^
    
    Ҿ਺লུ

19. ೉͍͠ɻɻɻʼʻ

20. Ϋϩʔδϟʔͷ࢖͍υίϩ ɾίʔϧόοΫ/ඇಉظॲཧ - Alamofire౳ ɾϦΞΫςΟϒϓϩάϥϛϯά RxSwift/SwiftBond ɾmap/filter/reduce

21. ΫϩʔδϟʔͰඇಉظॲཧ ɾඇಉظॲཧͱ͔ͰΑ͘࢖͏
    "MBNPpSFSFRVFTU (&5
    IUUQTRJJUBDPNBQJWJUFNT
    
    
    
    
    SFTQPOTF+40/
    \
    SFTQPOTF
    JO
    
    
    
    
    
    
    
    
    
    ͜͜ʹॲཧΛهड़͍ͯ͘͠
    
    
    
    
    ^

22. ઀ඌΫϩʔδϟʔ(Trailing Closure) ຤ඌҾ਺ʹΫϩʔδϟΛࢦఆͨؔ͠਺Λݺͼग़͢ࡍɺ Χοίॻ͖ΛলུͰ͖·͢ɻ ΧοίΛলུ͠ͳ͍৔߹ɺϝιουͷΧοί ͷ֎ʹΫϩʔδϟΛॻ͚Δ

23. ઀ඌΫϩʔδϟʔͰsort OVNCFSTTPSUFE \ OVN
    *OU
    OVN
    *OU
    
    #PPM
    JO
    
    
    
    
    SFUVSO
    OVN
    
    OVN
    ^

24. ·ͱΊ ɾΫϩʔδϟʔ͸໊ແ͠ͷؔ਺ ɾΫϩʔδϟʔΛ࢖͏ͱඇಉظॲཧͳͲ͕ॻ ͖΍͍͢ ɾ઀ඌΫϩʔδϟʔ͸Χοίͷ֎ʹॻ͚Δ

25. Ϋϩʔδϟʔͷม਺Ωϟϓνϟ to be continued…

26. ͝੩ௌ ͋Γ͕ͱ͏͍͟͝·ͨ͠