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Hello, Swift Concurrency world.の振り返り / Looking ...
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[email protected]
September 24, 2021
Programming
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170
Hello, Swift Concurrency world.の振り返り / Looking back on Hello, Swift Concurrency world.
This is the continuation of "Hello, SwiftConcurrency world." at iOSDC Japan 2021.
[email protected]
September 24, 2021
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Transcript
-PPLJOHCBDLBUJ04%$+BQBO TIJ[ )FMMP 4XJGU$PODVSSFODZXPSME ͷৼΓฦΓ Ћ
ΞδΣϯμ w4XJGU$PODVSSFODZͱߏԽϓϩάϥϛϯά wσʔλڝ߹ࢭͷஈ֊తಋೖ
4XJGU$PODVSSFODZͱߏԽϓϩάϥϛϯά
ߏԽϓϩάϥϛϯά IUUQTFXPSETKQXߏԽϓϩάϥϛϯάIUNM ίϯϐϡʔλϓϩάϥϜͷ։ൃཧղɺमਖ਼Λԁʹߦ͑Δ Α͏ɺϓϩάϥϜΛཧ͞ΕͨߏͷΈ߹ΘͤʹΑͬͯߏ ͢Δ͜ͱɻҰൠతʹ w ॱ هड़ͨ͠ॱ൪ʹ࣮ߦ͢Δ w
ذ ࢦఆ͞Εͨ݅Λຬ͔ͨ͢൱͔Ͱࢬ͔Ε͢Δ w ෮ ࢦఆ͞Ε͕ͨ݅Γཱͭؒ܁Γฦ͢ ͷࡾͭͷ੍ޚߏʹΑͬͯॲཧͷྲྀΕΛهड़͢Δ͜ͱͰ͋Δ ͱཧղ͞Ε͍ͯΔɻ
ؔΛൈ͚ͨޙ Ͳ͔͜ͷ࣌Ͱ࣮ߦ͞ΕΔ ݁ՌΛड͚औΔλΠϛϯά࣍ୈ ίʔϧόοΫܗࣜͷඇಉظॲཧ ίʔϧόοΫ࣮ߦલʹείʔϓΛൈ͚Δ
BTZODBXBJU ݁ՌΛͬͯ࣍ʹਐΉ ্͔ΒԼʹॲཧ͕࣮ߦ͞ΕΔ ͜ͷείʔϓͰશͯͷॲཧ͕݁͢Δ
GPSϧʔϓ "TZOD4FRVFODF IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOGPVOEBUJPOVSMMJOFT
NFUBEBUB 5BTLUSFF GFUDI0OF5IVNCOBJM EBUB NFUBEBUB 5BTLUSFF GFUDI0OF5IVNCOBJM EBUB NFUBEBUB 5BTLUSFF
GFUDI0OF5IVNCOBJM EBUB NFUBEBUB 5BTLUSFF GFUDI0OF5IVNCOBJM EBUB 4USVDUVSFE$PODVSSFODZ Γ<6**NBHF>
ߏԽϓϩάϥϛϯά IUUQTFXPSETKQXߏԽϓϩάϥϛϯάIUNM ίϯϐϡʔλϓϩάϥϜͷ։ൃཧղɺमਖ਼Λԁʹߦ͑Δ Α͏ɺϓϩάϥϜΛཧ͞ΕͨߏͷΈ߹ΘͤʹΑͬͯߏ ͢Δ͜ͱɻҰൠతʹ w ॱ هड़ͨ͠ॱ൪ʹ࣮ߦ͢Δ w
ذ ࢦఆ͞Εͨ݅Λຬ͔ͨ͢൱͔Ͱࢬ͔Ε͢Δ w ෮ ࢦఆ͞Ε͕ͨ݅Γཱͭؒ܁Γฦ͢ ͷࡾͭͷ੍ޚߏʹΑͬͯॲཧͷྲྀΕΛهड़͢Δ͜ͱͰ͋Δ ͱཧղ͞Ε͍ͯΔɻ
σʔλڝ߹ࢭͷஈ֊తಋೖ
σʔλڝ߹ͱʁ wσʔλڝ߹ͱɺϓϩάϥϜͰڞ༗͞ΕͨՄมঢ়ଶ TIBSFE NVUBCMFTUBUF ʹෳͷεϨου͔Βॻ͖ࠐΈΞΫηεΛؚ Μͩಉ࣌ΞΫηε͕ى͖ͨ݁ՌɺऔΓग़݁͢Ռ͕λΠϛϯά࣍ ୈͰมΘͬͯ͠·͏ݱ
"DUPS "DUPST w ϓϩάϥϜͰڞ༗͞ΕͨՄมঢ়ଶɺෳͷεϨου͔Β ͷಉ࣌ΞΫηεΛ͙ɺࢀরܕͷσʔλߏ w TUSVDUɺFOVNɺDMBTTʹ͍ۙػೳΛ͍࣋ͬͯΔ
4XJGU$PODVSSFODZ3PBENBQ
ஈ֊ͷ"DUPSʹΑΔσʔλڝ߹ࢭ wୈஈ֊ "DUPSΛར༻͍ͯ͠Δ෦Ͱσʔλڝ߹Λ͙ ྫάϩʔόϧมΛHMPCBMBDUPSʹ͢ΔɻDMBTTΛBDUPSʹม͢Δ wୈஈ֊ άϩʔόϧมHMPCBMBDUPSͰकΒͳ͚ΕͳΒͳ͍ ͘͠໌
ࣔతʹνΣοΫର֎ʹ͠ͳ͚ΕͳΒͳ͍ DMBTTDMBTTΛ෦ʹؚΜͩܕσϑΥϧτͰಉ࣌ฒߦॲཧؒͰ ༻Ͱ͖ͳ͘ͳΔ 4XJGU$PODVSSFODZ3PBENBQ ୈஈ֊ͰTPVSDFCSFBLJOHΛى͜͢Մೳੑ
͍ͭʁ wݴޠͷϞʔυ όʔδϣϯ ͰมΘΔ w4XJGUϢʔβ͕BTZODBXBJU"DUPSʹ׳ΕΔ·Ͱ࣌ؒΛ༩͑Δ 4XJGU$PODVSSFODZ3PBENBQ 4XJGUʜͷ
ஈ֊త4FOEBCMFνΣοΫ ·ͩ1JUDI IUUQTHJUIVCDPN%PVH(SFHPSTXJGUFWPMVUJPOCMPCTFOEBCMFTUBHJOHQSPQPTBMTOOOOTFOEBCMFTUBHJOHNE QJUDI͋Γ
4FOEBCMF w ಉ࣌ฒߦॲཧؒͰڞ༗ͯ҆͠શͳܕΛࣔ͢ϓϩτίϧ !VODIFDLFEΛ͚ΔͱνΣοΫΛআ֎Ͱ͖Δ wؔܕϓϩτίϧʹ४ڌͰ͖ͳ͍ͨΊ!4FOEBCMFͱ͍͏ଐ ੑΛ༻ w͜Εʹ४ڌ͠ͳ͍ͱίϯύΠϧΤϥʔʹͳΔ߹͕͋Δ 5BTLJOJU5BTLEFUBDIFEͷҾͷΫϩʔδϟͰ͏ܕͳ Ͳ
4FOEBCMFνΣοΫͷ w Ұؾʹ4FOEBCMFνΣοΫΛಋೖͯ͠͠·͏ͱɺ$PODVSSFODZ ʹରԠ͍ͯ͠ͳ͍Ϟδϡʔϧͷܕ͕͑ͳ͘ͳͬͯ͠·͍ɺ։ ൃ͕ਐ·ͳ͘ͳͬͯ͠·͏Մೳੑ ͜͜Ͱݴ͏ϞδϡʔϧͱɺࣗͷϓϩδΣΫτͷଞͷν ʔϜ͕։ൃ͍ͯ͠ΔϞδϡʔϧར༻͍ͯ͠ΔϥΠϒϥϦͷ ϞδϡʔϧΛࢦ͠·͢
4FOEBCMFνΣοΫͷ Ϟδϡʔϧ"͕$PODVSSFODZʹରԠ͠ͳ͍ͱܕ͕͑ͳ͍ Ϟδϡʔϧ" $PODVSSFODZରԠલ Ϟδϡʔϧ#
4FOEBCMFνΣοΫͷ !VODIFDLFEͰճආͰ͖Δ Ϟδϡʔϧ" Ϟδϡʔϧ#
4FOEBCMFνΣοΫͷ 4FOEBCMFνΣοΫ͠ͳ͍ͷͰσʔλڝ߹Λى͜͢ϦεΫ͕͋Δ ؾ͕͖ͭʹ͍͘ Ϟδϡʔϧ" Ϟδϡʔϧ#
طଘΫϥΠΞϯτͷӨڹ CPEZಉ࣌ฒߦʹ࣮ߦ͞ΕΔՄೳੑ͕͋ΔͨΊˏ4FOEBCMF͕ඞཁ CPEZͰੜ͞ΕΔΓͷܕ4FOEBCMF͕ඞཁ Ϟδϡʔϧ$ $PODVSSFODZରԠલ Ϟδϡʔϧ$ $PODVSSFODZରԠޙ
5͕4FOEBCMFʹ४ڌ͍ͯ͠ͳ͍ CPEZ͕!4FOEBCMFΫϩʔδϟʹมͰ͖ͳ͍ طଘΫϥΠΞϯτͷӨڹ Ϟδϡʔϧ% Ϟδϡʔϧ$ $PODVSSFODZରԠޙ
ஈ֊తͳ4FOEBCMFνΣοΫ w ঃʑʹ4FOEBCMFνΣοΫΛ͛Δ ڧΊΔΑ͏ʹ͢Δ w Ϟδϡʔϧ୯ҐͰνΣοΫͷ੍ޚΛͰ͖ΔΑ͏ʹ͢Δ
ஈ֊తͳ4FOEBCMFνΣοΫ w $PODVSSFODZະରԠϞδϡʔϧͷ4FOEBCMFͰͳ͍ܕͷν ΣοΫΛɺΤϥʔ͔ΒϫʔχϯάʹԼ͛Δɻ͘͠νΣο Ϋ͠ͳ͘͢Δ w Ϟδϡʔϧ୯ҐͰͷνΣοΫ੍ޚΛߦ͏ɻ$PODVSSFODZΛద ༻͍ͯ͠ΔϞδϡʔϧͱ͍ͯ͠ͳ͍ϞδϡʔϧͰνΣοΫͷํ ๏Λ۠ผ͢Δ
Ϟδϡʔϧ୯ҐνΣοΫ $PODVSSFODZରԠલ Ϟδϡʔϧ"ͷܕ4FOEBCMFͱਪ͞ΕɺϞδϡʔϧ#ͰΤϥʔʹͳΒͳ͍ ˞σʔλڝ߹͔Βݫ֨ʹ҆શͰͳ͍ Ϟδϡʔϧ" $PODVSSFODZରԠલ Ϟδϡʔϧ#
Ϟδϡʔϧ୯ҐͷνΣοΫ $PODVSSFODZରԠޙ 4FOEBCMFͳͷͰΤϥʔʹͳΒͳ͍ Ϟδϡʔϧ" $PODVSSFODZରԠޙ Ϟδϡʔϧ#
OPO4FOEBCMF OPO4FOEBCMFͳͷͰΤϥʔ Ϟδϡʔϧ" $PODVSSFODZରԠޙ Ϟδϡʔϧ# Ϟδϡʔϧ୯ҐͷνΣοΫ $PODVSSFODZରԠޙ
Ϟδϡʔϧ$PODVSSFODZΛద༻͢Δํ๏ w 4XJGU9ϞʔυͰίϯύΠϥϑϥά˞Λઃఆ͢Δ ˞ݱࡏͷ໊લXBSODPODVSSFODZ w 4XJGUϞʔυΛઃఆ͢Δ
5͕4FOEBCMFʹ४ڌ͍ͯ͠ͳ͍ CPEZ͕!4FOEBCMFΫϩʔδϟʹมͰ͖ͳ͍ طଘΫϥΠΞϯτͷӨڹ Ϟδϡʔϧ$ $PODVSSFODZରԠޙ Ϟδϡʔϧ%
5͕4FOEBCMFʹ४ڌ͍ͯ͠ͳ͍ 4XJGU9ͰϫʔχϯάʹͳΔ ˞ݱঢ়ϫʔχϯάग़ྗ͞Εͳ͍ͷͰࠓޙมΘΔՄೳੑ͋Γ طଘΫϥΠΞϯτͷӨڹ Ϟδϡʔϧ%
ίϯςΩετʹ߹Θͤͯ!4FOEBCMFʹOPO!4FOEBCMFʹͳΔ CPEZ͕!4FOEBCMFΫϩʔδϟʹมͰ͖ͳ͍ !VOTBGF4FOEBCMF˞ طଘΫϥΠΞϯτͷӨڹ Ϟδϡʔϧ$ $PODVSSFODZରԠޙ ˞໊শʹ͍ͭͯࠓޙมΘΔՄೳੑ͋Γ
!4FOEBCMFͰͳ͍ͷͰΤϥʔʹͳΒͳ͍ طଘΫϥΠΞϯτͷӨڹ Ϟδϡʔϧ% $PODVSSFODZରԠલ
ະରԠͰ$PODVSSFODZΛ༻͍ͯ͠Δ߹ !4FOEBCMFͱͯ͠ѻΘΕΔ طଘΫϥΠΞϯτͷରԠ Ϟδϡʔϧ% $PODVSSFODZରԠલ
͋ΔϞδϡʔϧͷ4FOEBCMFνΣοΫஈ֊ w 4XJGU9 $PODVSSFODZ༻෦ͷΈ4FOEBCMFνΣοΫΛͯ͠ϫʔχϯά͕ൃੜ͢Δ !VOTBGF4FOEBCMF$PODVSSFODZΛ༻͍ͯ͠Δ෦Ͱ!4FOEBCMFɺͦ ΕҎ֎OPO!4FOEBCMFͱͯ͠ѻΘΕΔ w 4XJGU9
ίϯύΠϥϑϥά ϞδϡʔϧશମͰ4FOEBCMFνΣοΫΛͯ͠ϫʔχϯά͕ൃੜ͢Δ !VOTBGF4FOEBCMFৗʹ!4FOEBCMFͱͯ͠ѻΘΕΔ w 4XJGU ϞδϡʔϧશମͰ4FOEBCMFνΣοΫΛͯ͠Τϥʔ͕ൃੜ͢Δ ͨͩ͠ɺ$PODVSSFODZະରԠͷϞδϡʔϧͷܕϫʔχϯά͕ൃੜ͢Δ
ஈ֊తʹಋೖ͢Δ͜ͱͰ w $PODVSSFODZະରԠͳͷ͕։ൃͷअຐΛ͠ͳ͍ w $PODVSSFODZରԠޙదʹνΣοΫΛͯ͘͠ΕΔ w ·ͣ4XJGU9ͰϫʔχϯάΛग़ྗ͢Δ͜ͱͰɺ4XJGUͰى͜ɹ ΔΤϥʔʹඋ͑Δ͜ͱ͕Ͱ͖Δ
ຊͷ·ͱΊ w 4XJGU$PODVSSFODZߏԽϓϩάϥϛϯά͕ҙࣝ͞Ε͍ͯΔ w σʔλڝ߹ͷνΣοΫʹΑͬͯTPVSDFCSFBLJOH͕ى͜ΔՄೳ ੑ͕ࣔࠦ͞Ε͍ͯΔ͕ɺݴޠͷόʔδϣϯϑϥάͷ༗ແʹΑ ͬͯঃʑʹରԠ͍͚ͯ͠ΔΑ͏ͳΈ͕४උ͞Ε͍ͯΔ ·ͩ 1JUDIஈ֊
w σʔλڝ߹Λى͜͢Մೳੑ͕͋ΔίʔυকདྷతʹΤϥʔʹͳ ΔՄೳੑ͕͋ΔͷͰɺࠓ͔ΒҙࣝΛ͢Δඞཁ͕͋Γͦ͏ άϩ ʔόϧมDMBTTΛ͍ͬͯΔՕॴͳͲ
͋Γ͕ͱ͏͍͟͝·ͨ͠
ஈ֊త4FOEBCMFνΣοΫ 1JUDI ه IUUQTHJTUHJUIVCDPNCFDDBEBYDDEFBCBFGDF
جຊతʹΓ͍ͨ͜ͱมΘΒͳ͍
TUSJDUDPODVSSFODZ w લճͷXBSODPODVSSFODZͱಉ͡ w 4XJGU9όʔδϣϯͰίϯύΠϥϑϥάʹࢦఆ͢Δͱɺ 4FOEBCMFνΣοΫΤϥʔͰͳ͘શͯܯࠂʹͳΔ
!QSFEJDBUF$PODVSSFODZ w ֎෦͔Βར༻͞ΕΔϥΠϒϥϦϞδϡʔϧͰ4XJGU $PODVSSFODZΛ༻͍ͨ͠߹ʹɺ4FOEBCMFະରԠͷϞδϡ ʔϧͰ༻͢ΔࡍͷʮޓϞʔυʯΛఏڙ͢Δ w 4XJGU9ܥͷ߹ɺ͍͔ͭ͘ͷ4FOEBCMFνΣοΫΛ੍͢Δ w 4FOEBCMFະରԠͷϞδϡʔϧͰ༻͢Δ߹4FOEBCMFͱ Έͳ͞Εͳ͍
4FOEBCMF͕એݴ͔Βফ͑Δ
!4FOEBCMFJNQPSU w 4FOEBCMFະରԠͷϥΠϒϥϦϞδϡʔϧͷܕએݴΛ JNQPSUͯ͠4XJGU$PODVSSFODZͰ༻͍ͨ͠߹ʹ༻Ͱ͖ Δ w JNQPSUͨ͠Ϟδϡʔϧ͕4FOEBCMFະରԠͷ߹ɺ 4FOEBCMFνΣοΫΛ͑Δ Τϥʔʹ͠ͳ͍
w JNQPSUͨ͠Ϟδϡʔϧ͕4FOEBCMFʹରԠ͢Δͱɺ4FOEBCMF νΣοΫ͕͞ΕΔΑ͏ʹͳΔ
0CKFDUJWF$એݴͷ4FOEBCMF w 0CKFDUJWF$͔ΒJNQPSUͨ͠ܕ͕4FOEBCMF͔OPO4FOEBCMF Ͱͳ͍͔ΛϔομϑΝΠϧͰ໌ࣔతʹࢦఆ͢Δ w TXJGU@BUUS l!4FOEBCMF 4XJGUແ݅ʹશͳ4FOEBCMFͷ४ڌΛ߹͢Δ w
҉తʹTXJGU@BUUS l!4FOEBCMFz ͕༩͞ΕΔ BTZODʹม͞ΕΔϝιουͷҾͷDPNQMFUJPO)BOEMFSͷϒϩοΫ FOVN@FYUFOTJCJMJUZ /4@&/6. OT@FSSPS@EPNBJO /4@&3303 fl BH@FOVN /4@015*0/4 TXJGU@XSBQQFS /4@5:1&%@&/6.
w TXJGU@BUUS l!@OPO4FOEBCMF TXJGU@BUUS l!4FOEBCMF ͕͑ΔॴͰ͑Δ ಉ͡એݴܕʹ͍ͨTXJGU@BUUS l!4FOEBCMF
ແࢹ͞Εͨ w TXJGU@BUUS !@OPO4FOEBCMF @BTTVNFE ಉ͡એݴܕʹ͍ͨTXJGU@BUUS l!4FOEBCMFz ແࢹ͞Εͳ͍ 0CKFDUJWF$એݴͷ4FOEBCMF
0CKFDUJWF$ϧʔϧ·ͱΊ w TXJGU@BUUS l!@OPO4FOEBCMFz ͳΒ໌ࣔతʹOPO4FOEBCMF w TXJGU@BUUS l!4FOEBCMFz ·ͨ҉తʹ༩͞ΕΔͷ໌ ࣔతʹ4FOEBCMF
w TXJGU@BUUS l!@OPO4FOEBCMF @BVEJUFE z ͳΒ໌ࣔతʹ OPO4FOEBCMF w ͪ͜Βʹ߹கͨ͠ͷ໌ࣔతʹ4FOEBCMF w ͦͷଞOPO4FOEBCMF
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