次世代の非同期処理はこうやって使い分ける！

by yutaabe200

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࣍ ੈ ୅ ͷ ඇ ಉ ظ ॲ ཧ ͸ ͜ ͏ ΍ ͬͯ ࢖ ͍ ෼ ͚ Δ ʂ 5 3 : 4 8 * ' 5 1 3 & 5" - , 4 : 6 5" " # &

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2 ࣗݾ঺հ Ѩ෦༏ଠ !ZVUBBCF $6/&-803,$0 -5%JO/**("5" J04"OESPJE%FWFMPQFSʜͷ͸ͣ 3FBDU&4Yɾ(PMBOH 1)1FS,BJHJͰ-5͠·͢

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3 ໨࣍ "HFOEB 3FBDUJWF&YUFOTJPOT͸Կ͕͍͍ͷ͔ ͳͥ๻Β͸BTZODBXBJUΛཉ͕͠Δͷ͔ 1SPNJTFͳͷ͔4USFBNͳͷ͔

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3FBDUJWF&YUFOTJPOT͸Կ͕͍͍ͷ͔ What is ReactiveExtensions good for …

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5 Կͬ ͯɺͭ·Γʜ

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6 ๻Β͸࣌Λࢧ഑͢Δ͜ͱʹ੒ޭͨ͠ɻ

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7 ΛखʹೖΕͨʁ

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9 ๻Β͸࣌Λࢧ഑͢Δ͜ͱΛ੒ޭͨ͠ɻ

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10 ๻Β͸࣌Λࢧ഑͢Δ͜ͱΛ੒ޭͨ͠ɻ Πϕϯτ΍஋ͷྲྀΕΛ্࣌ؒ࣠Ͱ ετϦʔϜͱͯ͠ѻ͍΍͔ͬͨ͢ɻ

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11 ؂ࢹՄೳ 0CTFSWBCMF ͳ΋ͷΛ࡞Γʜ ΠϕϯτΛߪಡ 4VCTDSJCF ͢Δͱʜ ੒ޭɾࣦഊ PO/FYU PSPO&SSPS Λڭ͑ͯ͘Εͨ 0CTFSWBCMF ؍࡯ର৅ 0CTFSWFS ؍࡯͢Δ 4VCTDSJCF

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12 Πϕϯτ΍஋ͷྲྀΕΛ্࣌ؒ࣠Ͱ ετϦʔϜͱͯ͠ѻ͍΍͔ͬͨ͢ɻ ඇಉظॲཧ͕؆୯ʹѻ͍΍͘͢ͳͬͨ

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13 Πϕϯτ΍஋ͷྲྀΕΛ্࣌ؒ࣠Ͱ ετϦʔϜͱͯ͠ѻ͍΍͔ͬͨ͢ɻ ඇಉظॲཧ͕؆୯ʹѻ͍΍͘͢ͳͬͨ

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ͳͥ๻Β͸BTZODBXBJUΛཉ͕͠Δͷ͔ Why do we want “async/await”?

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16 Πϕϯτ΍஋ͷྲྀΕΛ্࣌ؒ࣠Ͱ ετϦʔϜͱͯ͠ѻ͍΍͔ͬͨ͢ɻ ඇಉظॲཧ͕؆୯ʹѻ͍΍͘͢ͳͬͨ

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17 Πϕϯτ΍஋ͷྲྀΕΛ্࣌ؒ࣠Ͱ ετϦʔϜͱͯ͠ѻ͍΍͔ͬͨ͢ɻ ඇಉظॲཧ͕؆୯ʹѻ͍΍͘͢ͳͬͨ

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18 func fetchAdminUser(uid: String) { self.loginGateway .fetchAdminUser(uid: uid) .subscribe( onNext: { [weak self] adminUserEnitites in // do something }).disposed(by: self.disposeBag) } ͜ΕɺಡΉͷʹͲΕ͘Β͍͔͔Δʁ

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19 func fetchAdminUser(uid: String) async { let entities = await self.loginGateway.fetchAdminUser(uid: uid) } ͜͏ͳΒͲ͏ʁ

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20 func fetchAdminUser(uid: String) async { let entities = await self.loginGateway.fetchAdminUser(uid: uid) } ͜͏ͳΒͲ͏ʁ

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21 func fetchAdminUser(uid: String) async { let entities = await self.loginGateway.fetchAdminUser(uid: uid) } ͜͏ͳΒͲ͏ʁ

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22 3Y͕ඞཁʹͳΔγʔϯ ɾ6*Πϕϯτͷड͚औΓ ɾෳ਺ΠϕϯτͷετϦʔϜ͕ඞཁͳΠϕϯτ ɾσʔλঢ়ଶͷ؂ࢹ %BUB#JOEJOH ɾ୯७ͳ֎෦௨৴ͷSFRVFTUSFTQPOTF ୯ҰඇಉظΠϕϯτ

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23 3Y͕ඞཁʹͳΔγʔϯ ɾ6*Πϕϯτͷड͚औΓ ɾෳ਺ΠϕϯτͷετϦʔϜ͕ඞཁͳΠϕϯτ ɾσʔλঢ়ଶͷ؂ࢹ %BUB#JOEJOH ɾ୯७ͳ֎෦௨৴ͷSFRVFTUSFTQPOTF ୯ҰඇಉظΠϕϯτ

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24 3Y͕ඞཁʹͳΔγʔϯ ɾ6*Πϕϯτͷड͚औΓ ɾ୯७ͳ֎෦௨৴ͷSFRVFTUSFTQPOTF ୯ҰඇಉظΠϕϯτ ɾෳ਺ΠϕϯτͷετϦʔϜ͕ඞཁͳΠϕϯτ ɾσʔλঢ়ଶͷ؂ࢹ %BUB#JOEJOH ͜ΕΛ΋ͬͱ͍ܰͨ͘͠ʂ

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25 3Y͕ඞཁʹͳΔγʔϯ ɾ6*Πϕϯτͷड͚औΓ ɾ୯७ͳ֎෦௨৴ͷSFRVFTUSFTQPOTF ୯ҰඇಉظΠϕϯτ ɾෳ਺ΠϕϯτͷετϦʔϜ͕ඞཁͳΠϕϯτ ɾσʔλঢ়ଶͷ؂ࢹ %BUB#JOEJOH ͜ΕΛ΋ͬͱ͍ܰͨ͘͠ʂ ୯७ͳΠϕϯτʹ·Ͱ3Y͸࢖͍ͨ͘ͳ͍ʂ

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1SPNJTFͳͷ͔4USFBNͳͷ͔ Do you want “Promise” or “Stream”?

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27 1SPNJTFͱ͸ ɾʮ୯ҰͷඇಉظΠϕϯτʯΛѻ͏ ɾBTZODGVODUJPOͷ໭Γ஋ ɾBTZODGVODUJPO͕SFUVSOͨ͠ΒQSPNJTF͕SFTPMWF͢Δ ɾBTZODGVODUJPO͕UISPXͨ͠ΒQSPNJTF͕SFKFDU͢Δ ɾBXBJU͸QSPNJTFͷ݁ՌΛ଴ͪɺฦͬͨΒ࠶։͢Δ Ұൠతͳ

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28 1SPNJTFͰे෼ͳγʔϯ ɾ୯७ͳ"1*ίʔϧ ɾը૾ɾಈըͳͲૢ࡞ͷॏ͍ॲཧ ɾ࣌ݶര஄ ɾෳࡶͳΤϥʔϋϯυϦϯά͕ෆཁ UISPXTOPOUISPXJOHͰ͍͚Ε͹͍͍ ɾฒྻॲཧෆཁ࣌ 'VUVSFͰ͍͚Ε͹͍͍

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29 ɾ୯ҰඇಉظΠϕϯτ͸1SPNJTFͰྑ͔ͬͨ ɾෳ਺ͷඇಉظॲཧ ΠϕϯτετϦʔϜ ͸3Yͷຊ๬

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30 ɾ୯ҰඇಉظΠϕϯτ͸1SPNJTFͰྑ͔ͬͨ ɾෳ਺ͷඇಉظॲཧ ΠϕϯτετϦʔϜ ͸3Yͷຊ๬ ཉ͍͠ͷ͸ʮ1SPNJTFͳͷ͔4USFBNͳͷ͔ʯ

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͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠