Swift Concurrencyの 尻尾を掴め ～ 並行処理を受け入れる取っ掛かり

Transcript

1. ೳొཁ !OPUPSPJE
   J1IPOFΞϓϦ։ൃऀ೥݄೔
   4XJGU$PODVSSFODZͷ
   ৲ඌΛ௫Ί
   ʙฒߦॲཧΛड͚ೖΕΔऔֻ͔ͬΓ
   

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2. ࿩͢಺༰
   w 4XJGU$PODVSSFODZͷେ࿮
   w 4XJGU$PODVSSFODZͷऔֻ͔ͬΓΛ௫ΉͨΊͷଊ͑ํͭ
   

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3. ࿩͞ͳ͍಺༰
   w BDUPSͷৄࡉ
   w !.BJO"DUPS
   w !HMPCBM"DUPS
   w ߏ଄Խ͞Εͨฒߦੑ
   BDUPS·Ͱ࿩͢ʹ͸ BDUPS͸ॏཁ͕ͩ
   ͕࣌ؒ଍Γͳ͍ʜ
   

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4. ͓୊໨
   w ظ଴ͱͨΊଉͷ4XJGU$PODVSSFODZ
   w ؆ܿʹ4XJGU$PODVSSFODZͷઆ໌
   w ֆͰऔֻ͔ͬΓΛ͔ͭΉ
   w ୹͍จࣈྻͰࣔͯ͠ΈΔ
   w ̐֊૚Ͱࣔͯ͠ΈΔ
   w ·ͱΊ
   

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5. ຊ୊ʹೖΔલʹ
   

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6. BlogͰ2020೥ʹ౤ߘͨ͠಺༰
   

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7. "QQMFϚϧνϓϥοτϑ
   ΥʔϜ .VMUJQMBUGPSN
   
   ରԠ͸ෳ਺ͷJOGPQMJTU
   ΁ͷରԠͰ΋͋Δ࿩
   J04 J1BE04 NBD04
   IUUQTJSJNBTVDPN
   BQQMFNVMUJQMBUGPSNJOGP
   QMJTUJPTJQBEPTNBDPT
   

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8. w ೥౰࣌ɺNVMUJQMBUGPSNΛᨳ͍ͳ͕ΒJOGPQMJTU͚͕ͩऔΓ࢒͞Ε͍ͯΔ
   ఺Λࢦఠ
   w 9DPEFҎ߱Ͱ͸JOGPQMJTUͷ֤छ߲໨͸ϓϩδΣΫτઃఆ͔Β(FOFSBUF͞
   ΕΔΑ͏ʹͳ͍ͬͯΔ
   

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9. JOGPQMJTU
   w ೥౰࣌ɺNVMUJQMBUGPSNΛᨳ͍ͳ͕ΒJOGPQMJTU͚͕ͩऔΓ࢒͞Ε͍ͯΔ
   ఺Λࢦఠ
   w 9DPEFҎ߱Ͱ͸JOGPQMJTUͷ֤छ߲໨͸ϓϩδΣΫτઃఆ͔Β(FOFSBUF͞
   ΕΔΑ͏ʹͳ͍ͬͯΔ
   

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10. ࣮࣭"QQMF։ൃ؀ڥͷมԽΛ
    ༧૝͍ͯ͠Δ
    

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11. ͓ͦΒ͘4XJGU6*Ͱ8FCΞϓϦΛ
    ࡞੒Ͱ͖Δ೔΋͍ۙ͸ͣ
    

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12. ؓ࿩ٳ୊
    

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13. ظ଴ͱͨΊଉͷ4XJGU
    $PODVSSFODZ
    

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14. ظ଴ͱͨΊଉͷ4XJGU$PODVSSFODZ
    w 4XJGU͕ൃද͞Εͯ೥ 88%$ʙ
    
    w "QQMF͕৽ݴޠΛಋೖͨ͠໨࿦ݟ͸ॾʑ
    w େ੎ྗͱͳͬͨ8FC։ൃऀΛऔΓࠐΈ͍ͨͱ͍͏ҙਤ͸͋Δ
    

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15. Կނ
    

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16. େ͖͍։ൃऀूஂ͔ΒΞϓϦ։ൃऀΛҾ͖د͍ͤͨ
    "OESPJE͕+BWBݴޠΛཧղͰ͖ΔϓϩάϥϚʔऔΓࠐΜͰେ͖͘ͳͬͨྺ࢙Λ࠶ݱ͍ͨ͠
    

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17. 4XJGU͕
    औΓࠐΈ͍ͨ࠷ۙͷ
    &$."4DSJQU
    

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18. &$."4DSJQU ೥୆ޙ൒ʙ೥୆લ൒
    
    αʔόʔαΠυͰ/PEF+4࠾༻ྫ͕૿͔͑ͯΒٕज़తվળ͕Ճ଎ ॱෆಉ
    
    /PEF+4%FOP ύοέʔδ؅ཧ
    
    #BCFM ԼҐޓ׵ੑΛҡ࣋͢Δτϥϯείʔμʔ
    
    ؆ܿͳهड़ Ξϩʔؔ਺ࣜ
    ͷ௥Ճ #BCFMʹΑΔԼҐޓ׵อͪͭͭಋೖ
    
    &4-JOU ੩తߏจղੳ͕࣮࣭ͩϏϧυॲཧͷҰ෦
    
    QSPNJTF BTZODBXBJUಉظॲཧ
    
    BTZODBXBJU ؆ܿͳಉظॲཧهड़
    
    

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19. 8FC"TTFNCMZ
    ϑϩϯτΤϯυͰ͸ॲཧͷߴ଎ԽΛ໨ࢦͨ͠WebԾ૝Ϛγϯͱͦͷ্Ͱಈ࡞͢ΔόΠφϦʔ͕ొ৔ɻ
    

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20. BTZODBXBJU͕&$."4DSJQU্Ͱ࣮
    ݱ͞ΕͨࣄͰBTZODBXBJU͕ҰൠԽ
    

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21. 4XJGU΋4XJGU$PODVSSFODZʹؚΊΔܗͰ
    BZODBXBJUهड़Λಋೖ
    

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22. ؆ܿʹ4XJGU$PODVSSFODZͷه๏
    

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23. Swift Concurrencyͷ؆ܿͳهड़ʹ(࠷ॳ͸)جͮ͘ɻiOS15 SDKͰಋೖ͞ΕͨURLSessionͷSwift
    Concurrency޲͚ͷϢʔςΟϦςΟϝιουΛ༻͍Δɻ
    
    let (data, response) = await URLSession.shared.data(for: ϦΫΤετ)
    

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24. Swift Concurrencyͷ؆ܿͳهड़ʹ(࠷ॳ͸)جͮ͘ɻiOS15 SDKͰಋೖ͞ΕͨURLSessionͷSwift
    Concurrency޲͚ͷϢʔςΟϦςΟϝιουΛ༻͍Δɻ
    
    let (data, response) = await URLSession.shared.data(for: ϦΫΤετ)
    ͨͩ͠ɺECMAScriptͱ͸ҟͳΓɻtry/throw ػߏ͕ߟྀ͞Ε͍ͯΔඞཁ͕͋Δɻ
    
    let (data, response) = try await URLSession.shared.data(for: ϦΫΤετ)
    

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25. Swift Concurrencyͷ؆ܿͳهड़ʹ(࠷ॳ͸)جͮ͘ɻiOS15 SDKͰಋೖ͞ΕͨURLSessionͷSwift
    Concurrency޲͚ͷϢʔςΟϦςΟϝιουΛ༻͍Δɻ
    
    let (data, response) = await URLSession.shared.data(for: ϦΫΤετ)
    ͨͩ͠ɺECMAScriptͱ͸ҟͳΓɻtry/throw ػߏ͕ߟྀ͞Ε͍ͯΔඞཁ͕͋Δɻ
    
    let (data, response) = try await URLSession.shared.data(for: ϦΫΤετ)
    ͨͩ͠ɺTaskͰғΉ(΋͘͠͸TaskΛ಺แͨ͠ϝιουex: SwiftUI ͷtask) Λ௥Ճ͢Δඞཁ͕͋Δɻ
    
    Task {
    let (data, response) = try await URLSession.shared.data(for: ϦΫΤετ)
    }
    

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26. struct RandomFox: Equatable, Codable { let image: String; let link:
    String}
    
    
    Task {
    
    
    let url = URL(string: "https://randomfox.ca/floof/")!
    
    
    let request = URLRequest(url: URL(string: "https://randomfox.ca/
    floof")!, cachePolicy: .reloadIgnoringLocalCacheData)
    
    
    do {
    
    
    let (data, response) = try await URLSession.shared.data(for:
    request)
    
    
    _ = response as! HTTPURLResponse
    
    
    let randomFox = try JSONDecoder().decode(RandomFox.self, from:
    data)
    
    
    } catch error {
    
    
    print("error=\(error.localizedDescription)")
    
    
    }
    
    
    }
    
    
    

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27. λεΫͬͯԿ
    

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28. ฏߦॲཧͷྲྀΕΛҰखʹ
    Ҿ͖ड͚Δͷ͕5BTL
    

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29. ݹయతฏߦॲཧ
    ϝΠϯεϨου଴ͪεϨουϫʔΧʔεϨου
    ϫʔΧʔεϨου
    ଴ͪεϨου
    ϝΠϯεϨου
    Ωϟϯηϧ΋Ͱ͖Δ
    ࡞ۀ୲౰εϨου
    ࡞ۀΛ؂ࢹ͢Δ
    ݁ՌΛฦ͢
    ݁ՌΛฦ͢
    

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30. ݹయతฏߦॲཧ
    ϝΠϯεϨου଴ͪεϨουϫʔΧʔεϨου
    ϫʔΧʔεϨου
    ଴ͪεϨου
    ϝΠϯεϨου
    Ωϟϯηϧ΋Ͱ͖Δ
    ࡞ۀ୲౰εϨου
    ࡞ۀΛ؂ࢹ͢Δ
    ݁ՌΛฦ͢
    ݁ՌΛฦ͢
    5BTL
    5BTL͕ड͚࣋ͭ
    5BTL͕ड͚࣋ͭ
    5BTL͕ड͚࣋ͭ
    

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31. ๬Μͩ͸͕ͣͩͬͨ
    

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32. BTZODBXBJUBDUPS5BTL!.BJO"DUPS
    !HMPCBM"DUPS!4FOEBCMF!VODIFDLFE
    5BTLEFUBDIFEXJUI$IFDLFE$POUJOVBUJPO
    XJUI$IFDLFE5ISPXJOH$POUJOVBUJPO
    XJUI6OTBGF$POUJOVBUJPO
    XJUI6OTBGF5ISPXJOH$POUJOVBUJPOXJUI5BT
    XJUI5ISPXJOH5BTL(SPVQ5BTLJT$BODFMMFE
    $BODFMMBUJPO&SSPSXJUI5BTL$BODFMMBUJPO)B
    ಘΒΕͨͷ͸େྔͷΩʔϫʔυ
    

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33. ͕࣌ؒܦա͠
    ެࣜҎ֎ͷυΩϡϝϯτ͕ॆ࣮த
    

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34. ެࣜҎ֎ͷυΩϡϝϯτ
    ެ։͞Εͯ೥ܦա͠Α͏ͱ͢Δதɺ༏लͳެࣜҎ֎ͷυΩϡϝϯτ͕ొ৔
    w 4XJGU$PODVSSFODZ·ͱΊʢਖ਼ࣜ൛ରԠࡁʣ
    w IUUQT[FOOEFWBLLZJFBSUJDMFTTXJGUDPODVSSFODZ
    w 4XJGU$PODVSSFODZνʔτγʔτ
    w IUUQT[FOOEFWLPIFSBSUJDMFTTXJGUDPODVSSFODZDIFBUTIFFU
    w 4XJGU$PODVSSFODZͷXJUI5BTL$BODFMMBUJPO)BOEMFSͱ4FOEBCMFDPDLTDPNCMPH
    w IUUQTDPDLTDPNCIBUFOBCMPHDPNFOUSZ
    w .PEFSO$PODVSSFODZJO4XJGU*OUSPEVDUJPOw"OEZ*CBOF[
    w IUUQTXXXBOEZJCBOF[DPNQPTUTNPEFSODPODVSSFODZJOTXJGUJOUSPEVDUJPO
    

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35. ͦΕͰ΋औΓ૊Ήʹ͸
    Կ͔͠Βͷऔֻ͔ͬΓ͕ඞཁ
    

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36. 4XJGU$PODVSSFODZͷ
    ෳࡶ͔͞Βଊ͑ͯΈΔ
    

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37. ୹͍จࣈྻͰࣔͯ͠ΈΔ
    

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38. B5X T
    
    

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39. B5X T
    
    BZODBXBJUBDUPS
    5BTL
    8JUIʙͳͲେྔͷϝιου܈
    

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40. B5X T
    
    BZODBXBJUBDUPS
    5BTL
    XJUIʙͳͲେྔͷϝιου܈
    4XJGU༧໿ޠ
    ࣮͸ػೳͷࠜװ
    ෳࡶͳػೳ܈
    γϯϓϧͰ੔ཧ͞Εͨهड़ ৑௕Ͱෳࡶ
    ࢖͍͜ͳ͢ʹ͸ඞཁ
    5BTLͷதͰ͔͠ػೳ͠ͳ͍
    

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41. Կނ͜͜·Ͱෳࡶ
    

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42. "QQMFͱͯ͠͸
    ͋ΒΏΔେن໛ͳ࢓૊Έ·Ͱద༻͍ͨ͠
    

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43. େن໛ͱ͸ྫ͑͹
    

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44. $PSF$16
    

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45. ڧྗͳ$16ͷύϫʔΛϑϧՔಇ
    ͤ͞Δͷ͸"QQMFͷࢸ্໋୊
    

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46. "QQMFۘ੡Ͱͳ͚Ε͹ಋೖΛ᪳᪯͢Δ
    ن໛ͷπʔϧΩοτ܈ͱԽ͍ͯ͠Δ
    

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47. ̐֊૚Ͱࣔͯ͠ΈΔ
    

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48. BZODBXBJUΛؾܰ
    ʹݺͼग़ͤΔ֊૚
    "ZODBXBJUΛ࢖ͬ
    ͯػೳ௥Ճ͢Δ֊૚
    J04Ҏ্
    J04Ҏ্
    BTZODBXBJU
    5BTL
    BDUPS
    ͦͷଞ4XJGU
    $PODVSSFODZػೳ
    w 4XJGU
    w 4XJGU"UUSJCVUFT
    w (SBOE$FOUSBM%JTQBUDI
    w ڧྗͳϓϩηοαʔͷྗΛҾ͖ग़͢
    w ෆ۩߹ͷೖΓࠐΈͮΒ͍ฏߦॲཧ
    લఏͱͳΔٕज़
    "QQMFͷҙਤ
    

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49. BZODBXBJUΛؾܰ
    ʹݺͼग़ͤΔ
    "ZODBXBJUΛ࢖ͬͯ
    ػೳ௥Ճ͢Δʹ͸ඞཁ
    J04Ҏ্
    J04Ҏ্
    BTZODBXBJU
    5BTL
    BDUPS
    ͦͷଞ4XJGU
    $PODVSSFODZػೳ
    w 4XJGU
    w 4XJGU"UUSJCVUFT
    w (SBOE$FOUSBM%JTQBUDI
    w ڧྗͳϓϩηοαʔͷྗΛҾ͖ग़͢
    w ෆ۩߹ͷೖΓࠐΈͮΒ͍ฏߦॲཧ
    લఏͱͳΔٕज़
    "QQMFͷҙਤ
    εϨουΛӅṭͰ͖͍ͯΔൣғ
    

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50. 4XJGU"UUSJCVUFT͸ҎԼΛࢀর
    IUUQTJSJNBTVDPNBQQMF
    TXJGUBUUSJCVUFT
    

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51. ΋ͬͱࠜఈͷ໰୊΋͋Δ
    

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52. ࢛൒ੈلલʹ౤͛ೖΕΒΕͨϚϧνεϨου
    ίϯγϡʔϚʔ04ʹϚϧνεϨου͕౤͛ࠐ·Ε࢛ͯ൒ੈل
    w 8JOEPXT͕ίϯγϡʔϚʔ04ͱͯ͠εϨουΛಋೖ
    w εϨουಋೖ͸ϚʔέςΟϯάతͳҙຯ͕ڧ͔ͬͨ
    w σʔλΛอޢͭͭ͠ฒߦͯ͠ಈ͘ΞΠσΞ͸ະख़ͷ··ϦϦʔε
    w ౰࣌ͷϓϩάϥϛϯάݴޠ ౰࣌ͷ$$
    ͸ϚϧνεϨουಈ࡞͸࢓༷ʹؚΊ
    ͣ
    w Ҏޙͷݴޠ΋ϚϧνεϨουʹܾؔͯ͠ఆଧ͸ଧͪग़ͤͣ
    w ͨͩ͠.JDSPTPGU͸BTZODBXBJUͷಋೖࣗମ͸ૣ͔ͬͨ $ 5ZQF4DSJQU
    
    

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53. 4XJGU$PODVSSFODZ͕ղܾ͠Α͏ͱ͍ͯ͠Δ΋ͷ
    ࢛൒ੈلલʹ์Γग़͞Εͨ
    ϚϧνεϨουͷऔΓѻ͍Λ༰қʹ͢Δ
    ྫ֎ॲཧ USZʙDBUDI
    ΛฒߦॲཧͰ΋҆શʹߦ͏
    ϞμϯͳϓϩάϥϛϯάݴޠͷϧοΫε΁ͷ௥ਵ ։ൃऀͷؒޱΛ֦͛Δ
    
    

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54. ·ͱΊ
    

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55. ·ͱΊ
    w 4XJGU$PODVSSFODZൃද͞Ε͔ͯΒ೥ۙ͘ܦͪ·ͨ͠
    w ༗༻ͳࢿྉ͸ग़͖ͯ·͕ͨ͠࢓༷͕ڊେ͗ͯ͢औֻ͔ͬΓ͕গͳ͍Ͱ͢
    w ߟҊ͍͔ͨͭ͘͠ͷऔֻ͔ͬΓΛઆ໌͠·ͨ͠
    w B5X T
    
    w 4XJGU$PODVSSFODZͷཧղ֊૚
    

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56. J045FDI#MPHߋ৽த
    w4XJDU6*Λ࢖ͬͯ̍̌̌ߦͰαϯϓϧίʔυΛॻ͘
    4XJGUߦγϦʔζଞ"QQMF։ൃؔ܎ͷهࣄΛܝࡌத
    Ͱ͢ɻ
    JSJNBTVDPN
    OPUFDPNOPUPSPJE
    wʹ΋هࡌதͰ͢ɻ
    

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57. ࢀߟ
    w 4XJGU$PODVSSFODZ·ͱΊʢਖ਼ࣜ൛ରԠࡁʣ
    w IUUQT[FOOEFWBLLZJFBSUJDMFTTXJGU
    DPODVSSFODZ
    w 4XJGU$PODVSSFODZνʔτγʔτ
    w IUUQT[FOOEFWLPIFSBSUJDMFTTXJGU
    DPODVSSFODZDIFBUTIFFU
    w 4XJGU$PODVSSFODZͷXJUI5BTL$BODFMMBUJPO)BOEMFS
    ͱ4FOEBCMFDPDLTDPNCMPH
    w IUUQTDPDLTDPNCIBUFOBCMPHDPNFOUSZ
    
    w .PEFSO$PODVSSFODZJO4XJGU*OUSPEVDUJPOw
    "OEZ*CBOF[
    w IUUQTXXXBOEZJCBOF[DPNQPTUTNPEFSO
    DPODVSSFODZJOTXJGUJOUSPEVDUJPO
    w "TZODBXBJU8JLJQFEJB
    w IUUQTFOXJLJQFEJBPSHXJLJ"TZODBXBJU
    w UISFBEɺDPSPVUJOFͷྫ֎Λసૹ͢Δʂʂ2JJUB
    w IUUQTRJJUBDPN:VLJ.JZBUBLFJUFNT
    EEEFFEB
    w <ϓϨθϯࢿྉ> "QQMF͕
    ΍Γ͍ͨ์୊4XJGU
    "UUSJCVUFTc*SJNBTV%FOTBO1MBOOJOH͍Γ·͢ి
    ࢉاը
    w IUUQTJSJNBTVDPNBQQMFTXJGUBUUSJCVUFT
    

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