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【Ebisu.mobile#3】バイトルアプリへのSwift Concurrency導入とその効果
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Cychow
July 05, 2023
Programming
3
250
【Ebisu.mobile#3】バイトルアプリへのSwift Concurrency導入とその効果
Cychow
July 05, 2023
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Transcript
όΠτϧΞϓϦͷSwift Concurrency ಋೖͱͦͷޮՌ Eiji Shirakazu, iOS Engineer in dip
ࣗݾհ ന ӥ࢘ / Eiji Shirakazu @cychow_app όΠτϧ iOSΞϓϦ։ൃ୲ ࠷ۙVision
Pro (visionOS)ͷγϛϡϨʔλͰ༡ΜͰ͍·͢ʂ
None
ຊͷ༰ όΠτϧΞϓϦͷ͝հͱ։ൃपΓͷ͓ ͦͦSwift Concurrencyͱ Swift ConcurrencyΛͲͷΑ͏ʹಋೖ͔ͨ͠ Swift Concurrencyಋೖޙͷঢ়گ
όΠτϧΞϓϦͱ… ɾΞϧόΠτ/ύʔτٻਓݕࡧαʔϏε ɾ෯͍͔༷ͭʑͳ݅ͷΞϧόΠτ/ύʔτใɹ ɹΛଟ͘ܝࡌʂ ɾࣸਅಈըͳͲ͔ΒΞϧόΠτ/ύʔτઌͷ੍ಇ͍ͯ ɹ͍Δελοϑɺ৬ͷงғؾͳͲΛ֬ೝ͢Δ͜ͱ͕Ͱ͖Δʂ
ʮॳճΠϯετʔϧޙͷମݧ্ʯػೳʹ͍ͭͯ εϓϥογϡ ٻਓͷҰཡ
ʮॳճΠϯετʔϧޙͷମݧ্ʯػೳʹ͍ͭͯ εϓϥογϡ Ϣʔβʔͷ࣭
ʮॳճΠϯετʔϧޙͷମݧ্ʯػೳͷ։ൃͰ Swift ConcurrencyΛಋೖʂʂ
Swift Concurrencyͱ WWDC21ʹͯొͨ͠৽ͨͳฒߦॲཧͷख๏ async/awaitΩʔϫʔυΛ༻͍Δ͜ͱͰඇಉظॲཧ / ฒߦॲཧΛ࣮ݱ͢Δ async/awaitҎ֎ʹActorTaskɺAsyncStreamͳͲͷ֓೦ొ
None
None
Swift ConcurrencyΛͲͷΑ͏ʹಋೖ͔ͨ͠ ᶃ ·͕ͣࣗੵۃతʹConcurrencyʹ͍ͭͯΠϯϓοτͨ͠ ᶄ ಋೖ͢Δ͜ͱʹͲΕ͘Β͍ͷϝϦοτ͕͋Δ͔Λߟͨ͠
ɾඇಉظॲཧΛಉظॲཧͷΑ͏ʹදه͢Δ͜ͱͰ࣮ߦॱংΛ͍͍͢ Swift ConcurrencyΛಋೖ͢ΔϝϦοτ ɾσʔλڝ߹Λճආ͘͢͠ͳΔ ɾiOS13Ҏ߱Ͱ༻͢Δ͜ͱ͕Ͱ͖Δ ɾΤϥʔϋϯυϦϯάΛߦ͍͘͢ͳΔ ͳͲ…
Swift ConcurrencyΛͲͷΑ͏ʹಋೖ͔ͨ͠ ᶅ ઌഐΤϯδχΞͷํʑͱ૬ஊ͠ɺαʔϏεʹ༩͑ΔӨڹΛߟ্ྀͨ͠Ͱಋೖ ɹ͍ͯ͘͜͠ͱʹͨ͠ ᶃ ·͕ͣࣗੵۃతʹConcurrencyʹ͍ͭͯΠϯϓοτͨ͠ ᶄ ಋೖ͢Δ͜ͱʹͲΕ͘Β͍ͷϝϦοτ͕͋Δ͔Λߟͨ͠ ᶆ
Өڹൣғ͕খ͍͞ʮॳճΠϯετʔϧޙͷମݧʯΛ্ͤ͞ΔϓϩδΣΫτ ɹʹͯಋೖ͢Δ͜ͱͱͨ͠
ɾcompletionHandlerΛ༻͍ͣɺasync/awaitΛ༻͍ͯදه͢Δɻ ɾGCDΛ༻͢ΔՕॴΛTaskʹஔ͖͑Δɻ ɾMainActorΛࢦఆ͢ΔՕॴʹҙ͢Δɻ Swift ConcurrencyΛಋೖ࣌ͷϙΠϯτ ɾwithCheckedContinuationwithCheckedThrowingContinuationͰ ɹطଘͷඇಉظॲཧΛasync/awaitʹରԠͤ͞Δ͜ͱ͕Ͱ͖Δɻ ͳͲ
ͨͩɺ…
໘ͨ͠ ଞͷ։ൃνʔϜϝϯόʔ৽نࢀըऀͷํʹରͯ͠Concurrencyͷ ॻ͖ํͳͲΛͬͯΒ͏ඞཁ͕͋ͬͨɻ
ͷղܾࡦ LTେձࢀՃ
Swift Concurrencyಋೖޙͷঢ়گ ɾιʔείʔυͷՄಡੑ্͕ͨ͠ ɾνʔϜϝϯόʔ͕ੵۃతʹΩϟονΞοϓ͢ΔΑ͏ʹͳͬͨ ʲݱঢ়ʳ ɾαʔυύʔςΟϥΠϒϥϦ͔Βඪ४ϥΠϒϥϦʹҠߦ͢Δ͜ͱ͕Ͱ͖͍ͯΔ
Swift Concurrencyಋೖޙͷঢ়گ ɾSwift6ͷϝδϟʔΞοϓσʔτͷ४උ ʲࠓޙͷ՝ʳ
None
Swift Concurrencyಋೖޙͷঢ়گ ɾࠓޙͷSwift6ͷϝδϟʔΞοϓσʔτͷ४උ ɾίϯύΠϥϑϥάʮStrict Concurrency CheckingʯͷಋೖͳͲݕ౼ ʲࠓޙʳ
ίϯύΠϥϑϥάʮStrict Concurrency Checkingʯ
ίϯύΠϥϑϥάʮExistentialAnyʯಋೖݕ౼த….
Swift Concurrencyಋೖޙͷঢ়گ ɾࠓޙͷSwift6ͷϝδϟʔΞοϓσʔτͷ४උ ɾίϯύΠϥϑϥάʮStrict Concurrency CheckingʯͷಋೖͳͲݕ౼ ɾSendableͷ४ڌͷνΣοΫͳͲ͓͜ͳ͍͖͍ͬͯͨ ʲࠓޙʳ
όΠτϧͰҾ͖ଓ͖ٕज़తઓΛଓ͚͍͖ͯ·͢ʂ
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