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.

Transcript

1. -PPLJOH
   CBDL
   BU
   J04%$
   +BQBO
    
 
   TIJ[ )FMMP
   4XJGU
   $PODVSSFODZ
   XPSME 
 ͷৼΓฦΓ Ћ
2. ΞδΣϯμ w4XJGU
   $PODVSSFODZͱߏ଄Խϓϩάϥϛϯά
   wσʔλڝ߹๷ࢭͷஈ֊తಋೖ
3. 4XJGU
   $PODVSSFODZͱߏ଄Խϓϩάϥϛϯά
   
4. ߏ଄Խϓϩάϥϛϯά IUUQTFXPSETKQXߏ଄ԽϓϩάϥϛϯάIUNM ίϯϐϡʔλϓϩάϥϜͷ։ൃ΍ཧղɺमਖ਼Λԁ׈ʹߦ͑Δ Α͏ɺϓϩάϥϜΛ੔ཧ͞Εͨߏ଄ͷ૊Έ߹ΘͤʹΑͬͯߏ ੒͢Δ͜ͱɻҰൠతʹ͸
   w ॱ઀ هड़ͨ͠ॱ൪ʹ࣮ߦ͢Δ
   w ෼ذ ࢦఆ͞Εͨ৚݅Λຬ͔ͨ͢൱͔Ͱࢬ෼͔Ε͢Δ
   w ൓෮ ࢦఆ͞Εͨ৚͕݅੒Γཱͭؒ܁Γฦ͢
   ͷࡾͭͷ੍ޚߏ଄ʹΑͬͯॲཧͷྲྀΕΛهड़͢Δ͜ͱͰ͋Δ ͱཧղ͞Ε͍ͯΔɻ
5. ؔ਺Λൈ͚ͨޙ
   Ͳ͔͜ͷ࣌఺Ͱ࣮ߦ͞ΕΔ
   ݁ՌΛड͚औΔλΠϛϯά࣍ୈ ίʔϧόοΫܗࣜͷඇಉظॲཧ ίʔϧόοΫ࣮ߦલʹείʔϓΛൈ͚Δ
6. BTZODBXBJU ݁ՌΛ଴ͬͯ࣍ʹਐΉ ্͔ΒԼʹॲཧ͕࣮ߦ͞ΕΔ ͜ͷείʔϓ಺Ͱશͯͷॲཧ͕׬݁͢Δ
7. GPSϧʔϓ "TZOD4FRVFODF IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOGPVOEBUJPOVSMMJOFT
8. NFUBEBUB 5BTL
   USFF GFUDI0OF5IVNCOBJM EBUB NFUBEBUB 5BTL
   USFF GFUDI0OF5IVNCOBJM EBUB NFUBEBUB 5BTL
   USFF GFUDI0OF5IVNCOBJM EBUB NFUBEBUB 5BTL
   USFF GFUDI0OF5IVNCOBJM EBUB 4USVDUVSFE
   $PODVSSFODZ ໭Γ஋͸<6**NBHF>
9. ߏ଄Խϓϩάϥϛϯά IUUQTFXPSETKQXߏ଄ԽϓϩάϥϛϯάIUNM ίϯϐϡʔλϓϩάϥϜͷ։ൃ΍ཧղɺमਖ਼Λԁ׈ʹߦ͑Δ Α͏ɺϓϩάϥϜΛ੔ཧ͞Εͨߏ଄ͷ૊Έ߹ΘͤʹΑͬͯߏ ੒͢Δ͜ͱɻҰൠతʹ͸
   w ॱ઀ هड़ͨ͠ॱ൪ʹ࣮ߦ͢Δ
   w ෼ذ ࢦఆ͞Εͨ৚݅Λຬ͔ͨ͢൱͔Ͱࢬ෼͔Ε͢Δ
   w ൓෮ ࢦఆ͞Εͨ৚͕݅੒Γཱͭؒ܁Γฦ͢
   ͷࡾͭͷ੍ޚߏ଄ʹΑͬͯॲཧͷྲྀΕΛهड़͢Δ͜ͱͰ͋Δ ͱཧղ͞Ε͍ͯΔɻ
10. σʔλڝ߹๷ࢭͷஈ֊తಋೖ
11. σʔλڝ߹ͱ͸ʁ wσʔλڝ߹ͱ͸ɺϓϩάϥϜ಺Ͱڞ༗͞ΕͨՄมঢ়ଶ TIBSFE
    NVUBCMF
    TUBUF ʹෳ਺ͷεϨου͔Βॻ͖ࠐΈΞΫηεΛؚ Μͩಉ࣌ΞΫηε͕ى͖ͨ݁ՌɺऔΓग़݁͢Ռ͕λΠϛϯά࣍ ୈͰมΘͬͯ͠·͏ݱ৅
12. "DUPS "DUPST w ϓϩάϥϜ಺Ͱڞ༗͞ΕͨՄมঢ়ଶ΁ɺෳ਺ͷεϨου͔Β ͷಉ࣌ΞΫηεΛ๷͙ɺࢀরܕͷσʔλߏ଄
    w TUSVDUɺFOVNɺDMBTTʹ͍ۙػೳΛ͍࣋ͬͯΔ
13. 4XJGU
    $PODVSSFODZ
    3PBENBQ
14. ஈ֊ͷ"DUPSʹΑΔσʔλڝ߹๷ࢭ wୈஈ֊ 
 "DUPSΛར༻͍ͯ͠Δ෦෼Ͱσʔλڝ߹Λ๷͙ 
 ྫ
    άϩʔόϧม਺ΛHMPCBM
    BDUPSʹ͢ΔɻDMBTTΛBDUPSʹม׵͢Δ
    wୈஈ֊ 
 άϩʔόϧม਺͸HMPCBM
    BDUPSͰकΒͳ͚Ε͹ͳΒͳ͍ ΋͘͠͸໌ ࣔతʹνΣοΫର৅֎ʹ͠ͳ͚Ε͹ͳΒͳ͍ 
 DMBTT΍DMBTTΛ಺෦ʹؚΜͩܕ͸σϑΥϧτͰಉ࣌ฒߦॲཧؒͰ࢖ ༻Ͱ͖ͳ͘ͳΔ 4XJGU
    $PODVSSFODZ
    3PBENBQ ୈஈ֊ͰTPVSDF
    CSFBLJOHΛى͜͢Մೳੑ
15. ͍ͭʁ wݴޠͷϞʔυ όʔδϣϯ ͰมΘΔ
    w4XJGUϢʔβ͕BTZODBXBJU΍"DUPSʹ׳ΕΔ·Ͱ࣌ؒΛ༩͑Δ 4XJGU
    $PODVSSFODZ
    3PBENBQ 4XJGUʜͷ࿩
16. ஈ֊త4FOEBCMFνΣοΫ ·ͩ1JUDI IUUQTHJUIVCDPN%PVH(SFHPSTXJGUFWPMVUJPOCMPCTFOEBCMFTUBHJOHQSPQPTBMTOOOOTFOEBCMFTUBHJOHNE QJUDI͋Γ
17. 4FOEBCMF
    w ಉ࣌ฒߦॲཧؒͰڞ༗ͯ͠΋҆શͳܕΛࣔ͢ϓϩτίϧ 
 !VODIFDLFEΛ෇͚ΔͱνΣοΫΛআ֎Ͱ͖Δ
    wؔ਺ܕ͸ϓϩτίϧʹ४ڌͰ͖ͳ͍ͨΊ!4FOEBCMFͱ͍͏ଐ ੑΛ࢖༻
    w͜Εʹ४ڌ͠ͳ͍ͱίϯύΠϧΤϥʔʹͳΔ৔߹͕͋Δ 5BTLJOJU΍5BTLEFUBDIFEͷҾ਺ͷΫϩʔδϟ಺Ͱ࢖͏ܕͳ Ͳ
18. 4FOEBCMFνΣοΫͷ໰୊఺ w Ұؾʹ4FOEBCMFνΣοΫΛಋೖͯ͠͠·͏ͱɺ$PODVSSFODZ ʹରԠ͍ͯ͠ͳ͍Ϟδϡʔϧͷܕ͕࢖͑ͳ͘ͳͬͯ͠·͍ɺ։ ൃ͕ਐ·ͳ͘ͳͬͯ͠·͏Մೳੑ΋ 
 ͜͜Ͱݴ͏Ϟδϡʔϧͱ͸ɺࣗ਎ͷϓϩδΣΫτ಺ͷଞͷν ʔϜ͕։ൃ͍ͯ͠ΔϞδϡʔϧ΍ར༻͍ͯ͠ΔϥΠϒϥϦ಺ͷ ϞδϡʔϧΛࢦ͠·͢
19. 4FOEBCMFνΣοΫͷ໰୊఺ Ϟδϡʔϧ"͕$PODVSSFODZʹରԠ͠ͳ͍ͱܕ͕࢖͑ͳ͍ Ϟδϡʔϧ"
    $PODVSSFODZରԠલ Ϟδϡʔϧ#
20. 4FOEBCMFνΣοΫͷ໰୊఺ !VODIFDLFEͰճආͰ͖Δ
    Ϟδϡʔϧ" Ϟδϡʔϧ#
21. 4FOEBCMFνΣοΫͷ໰୊఺ 4FOEBCMFνΣοΫ͠ͳ͍ͷͰσʔλڝ߹Λى͜͢ϦεΫ͕͋Δ 

    ؾ͕͖ͭʹ͍͘
    Ϟδϡʔϧ" Ϟδϡʔϧ#
22. طଘΫϥΠΞϯτ΁ͷӨڹ CPEZ͸ಉ࣌ฒߦʹ࣮ߦ͞ΕΔՄೳੑ͕͋ΔͨΊˏ4FOEBCMF͕ඞཁ 
 CPEZͰੜ੒͞ΕΔ໭Γ஋ͷܕ΋4FOEBCMF͕ඞཁ Ϟδϡʔϧ$ $PODVSSFODZରԠલ Ϟδϡʔϧ$ $PODVSSFODZରԠޙ
23. ໰୊
    5͕4FOEBCMFʹ४ڌ͍ͯ͠ͳ͍ 
 ໰୊
    CPEZ͕!4FOEBCMFΫϩʔδϟʹม׵Ͱ͖ͳ͍ طଘΫϥΠΞϯτ΁ͷӨڹ Ϟδϡʔϧ% Ϟδϡʔϧ$ $PODVSSFODZରԠޙ
24. ஈ֊తͳ4FOEBCMFνΣοΫ w ঃʑʹ4FOEBCMFνΣοΫΛ޿͛Δ ڧΊΔΑ͏ʹ͢Δ
    w Ϟδϡʔϧ୯ҐͰνΣοΫͷ੍ޚΛͰ͖ΔΑ͏ʹ͢Δ
25. ஈ֊తͳ4FOEBCMFνΣοΫ w $PODVSSFODZະରԠϞδϡʔϧͷ4FOEBCMFͰ͸ͳ͍ܕ΁ͷν ΣοΫΛɺΤϥʔ͔ΒϫʔχϯάʹԼ͛Δɻ΋͘͠͸νΣο Ϋ͠ͳ͘͢Δ
    w Ϟδϡʔϧ୯ҐͰͷνΣοΫ੍ޚΛߦ͏ɻ$PODVSSFODZΛద ༻͍ͯ͠ΔϞδϡʔϧͱ͍ͯ͠ͳ͍ϞδϡʔϧͰνΣοΫͷํ ๏Λ۠ผ͢Δ
26. Ϟδϡʔϧ୯ҐνΣοΫ $PODVSSFODZରԠલ Ϟδϡʔϧ"ͷܕ͸4FOEBCMFͱਪ࿦͞ΕɺϞδϡʔϧ#಺ͰΤϥʔʹͳΒͳ͍
    ˞σʔλڝ߹͔Βݫ֨ʹ҆શͰ͸ͳ͍ Ϟδϡʔϧ"
    $PODVSSFODZରԠલ Ϟδϡʔϧ#
27. Ϟδϡʔϧ୯ҐͷνΣοΫ $PODVSSFODZରԠޙ 4FOEBCMFͳͷͰΤϥʔʹͳΒͳ͍ Ϟδϡʔϧ"
    $PODVSSFODZରԠޙ Ϟδϡʔϧ#
28. OPO4FOEBCMF OPO4FOEBCMFͳͷͰΤϥʔ Ϟδϡʔϧ"
    $PODVSSFODZରԠޙ Ϟδϡʔϧ# Ϟδϡʔϧ୯ҐͷνΣοΫ $PODVSSFODZରԠޙ
29. Ϟδϡʔϧ΁$PODVSSFODZΛద༻͢Δํ๏ w 4XJGU9ϞʔυͰίϯύΠϥϑϥά˞Λઃఆ͢Δ 
 ˞ݱࡏͷ໊લ͸XBSODPODVSSFODZ
    w 4XJGUϞʔυΛઃఆ͢Δ
30. ໰୊
    5͕4FOEBCMFʹ४ڌ͍ͯ͠ͳ͍ 
 ໰୊
    CPEZ͕!4FOEBCMFΫϩʔδϟʹม׵Ͱ͖ͳ͍ طଘΫϥΠΞϯτͷӨڹ Ϟδϡʔϧ$ $PODVSSFODZରԠޙ Ϟδϡʔϧ%
31. ໰୊
    5͕4FOEBCMFʹ४ڌ͍ͯ͠ͳ͍ 
 
    4XJGU9Ͱ͸ϫʔχϯάʹͳΔ ˞
    ݱঢ়ϫʔχϯά΋ग़ྗ͞Εͳ͍ͷͰࠓޙมΘΔՄೳੑ͋Γ طଘΫϥΠΞϯτ΁ͷӨڹ Ϟδϡʔϧ%
32. ίϯςΩετʹ߹Θͤͯ!4FOEBCMFʹ΋OPO!4FOEBCMFʹ΋ͳΔ ໰୊
    CPEZ͕!4FOEBCMFΫϩʔδϟʹม׵Ͱ͖ͳ͍
    
 
    !VOTBGF4FOEBCMF
    ˞ طଘΫϥΠΞϯτ΁ͷӨڹ Ϟδϡʔϧ$ $PODVSSFODZରԠޙ ˞໊শʹ͍ͭͯ͸ࠓޙมΘΔՄೳੑ͋Γ
33. !4FOEBCMFͰ͸ͳ͍ͷͰΤϥʔʹͳΒͳ͍ طଘΫϥΠΞϯτ΁ͷӨڹ Ϟδϡʔϧ% $PODVSSFODZରԠલ
34. ະରԠͰ΋$PODVSSFODZΛ࢖༻͍ͯ͠Δ৔߹͸ 
 !4FOEBCMFͱͯ͠ѻΘΕΔ طଘΫϥΠΞϯτ΁ͷରԠ Ϟδϡʔϧ% $PODVSSFODZରԠલ
35. ͋ΔϞδϡʔϧͷ4FOEBCMFνΣοΫஈ֊ w 4XJGU9 
 $PODVSSFODZ࢖༻෦෼ͷΈ4FOEBCMFνΣοΫΛͯ͠ϫʔχϯά͕ൃੜ͢Δ 
 !VOTBGF4FOEBCMF͸$PODVSSFODZΛ࢖༻͍ͯ͠Δ෦෼Ͱ͸!4FOEBCMFɺͦ ΕҎ֎͸OPO!4FOEBCMFͱͯ͠ѻΘΕΔ
    w 4XJGU9
    
    ίϯύΠϥϑϥά 
 ϞδϡʔϧશମͰ4FOEBCMFνΣοΫΛͯ͠ϫʔχϯά͕ൃੜ͢Δ 
 !VOTBGF4FOEBCMF͸ৗʹ!4FOEBCMFͱͯ͠ѻΘΕΔ
    w 4XJGU 
 ϞδϡʔϧશମͰ4FOEBCMFνΣοΫΛͯ͠Τϥʔ͕ൃੜ͢Δ 
 ͨͩ͠ɺ$PODVSSFODZະରԠͷϞδϡʔϧͷܕ͸ϫʔχϯά͕ൃੜ͢Δ
36. ஈ֊తʹಋೖ͢Δ͜ͱͰ w $PODVSSFODZະରԠͳ΋ͷ͕։ൃͷअຐΛ͠ͳ͍
    
    w $PODVSSFODZରԠޙ͸ద੾ʹνΣοΫΛͯ͘͠ΕΔ
    w ·ͣ4XJGU9ͰϫʔχϯάΛग़ྗ͢Δ͜ͱͰɺ4XJGUͰى͜ɹ ΔΤϥʔʹඋ͑Δ͜ͱ͕Ͱ͖Δ
37. ຊ೔ͷ·ͱΊ w 4XJGU
    $PODVSSFODZ͸ߏ଄Խϓϩάϥϛϯά͕ҙࣝ͞Ε͍ͯΔ
    w σʔλڝ߹ͷνΣοΫʹΑͬͯTPVSDF
    CSFBLJOH͕ى͜ΔՄೳ ੑ͕ࣔࠦ͞Ε͍ͯΔ͕ɺݴޠͷόʔδϣϯ΍ϑϥάͷ༗ແʹΑ ͬͯঃʑʹରԠ͍͚ͯ͠ΔΑ͏ͳ࢓૊Έ͕४උ͞Ε͍ͯΔ ·ͩ 1JUDIஈ֊
    w σʔλڝ߹Λى͜͢Մೳੑ͕͋Δίʔυ͸কདྷతʹΤϥʔʹͳ ΔՄೳੑ͕͋ΔͷͰɺࠓ͔ΒҙࣝΛ͢Δඞཁ͕͋Γͦ͏ άϩ ʔόϧม਺΍DMBTTΛ࢖͍ͬͯΔՕॴͳͲ
38. ͋Γ͕ͱ͏͍͟͝·ͨ͠
39. ஈ֊త4FOEBCMFνΣοΫ 1JUDI ௥ه IUUQTHJTUHJUIVCDPNCFDDBEBYDDEFBCBFGDF
40. جຊతʹ΍Γ͍ͨ͜ͱ͸มΘΒͳ͍
41. TUSJDUDPODVSSFODZ w લճͷXBSODPODVSSFODZͱಉ͡
    w 4XJGU9όʔδϣϯͰίϯύΠϥϑϥάʹࢦఆ͢Δͱɺ 4FOEBCMFνΣοΫ͸ΤϥʔͰ͸ͳ͘શͯܯࠂʹͳΔ
42. !QSFEJDBUF$PODVSSFODZ w ֎෦͔Βར༻͞ΕΔϥΠϒϥϦ΍ϞδϡʔϧͰ4XJGU
    $PODVSSFODZΛ࢖༻͍ͨ͠৔߹ʹɺ4FOEBCMFະରԠͷϞδϡ ʔϧͰ࢖༻͢Δࡍͷʮޓ׵ϞʔυʯΛఏڙ͢Δ
    w 4XJGU9ܥͷ৔߹ɺ͍͔ͭ͘ͷ4FOEBCMFνΣοΫΛ཈੍͢Δ
    w 4FOEBCMFະରԠͷϞδϡʔϧͰ࢖༻͢Δ৔߹͸4FOEBCMFͱ Έͳ͞Εͳ͍ 4FOEBCMF͕એݴ͔Βফ͑Δ
43. !4FOEBCMF
    JNQPSU w 4FOEBCMFະରԠͷϥΠϒϥϦ΍Ϟδϡʔϧͷܕ΍એݴΛ JNQPSUͯ͠4XJGU
    $PODVSSFODZͰ࢖༻͍ͨ͠৔߹ʹ࢖༻Ͱ͖ Δ
    w JNQPSUͨ͠Ϟδϡʔϧ͕4FOEBCMFະରԠͷ৔߹͸ɺ 4FOEBCMFνΣοΫΛ཈͑Δ Τϥʔʹ͠ͳ͍
    w JNQPSUͨ͠Ϟδϡʔϧ͕4FOEBCMFʹରԠ͢Δͱɺ4FOEBCMF νΣοΫ͕͞ΕΔΑ͏ʹͳΔ
44. 0CKFDUJWF$એݴͷ4FOEBCMF w 0CKFDUJWF$͔ΒJNQPSUͨ͠ܕ͕4FOEBCMF͔OPO4FOEBCMF Ͱ͸ͳ͍͔ΛϔομϑΝΠϧͰ໌ࣔతʹࢦఆ͢Δ
    w TXJGU@BUUS l!4FOEBCMF 
 4XJGU͸ແ৚݅ʹ׬શͳ4FOEBCMF΁ͷ४ڌΛ߹੒͢Δ
    w ҉໧తʹTXJGU@BUUS l!4FOEBCMFz ͕෇༩͞ΕΔ 
 
    BTZODʹม׵͞ΕΔϝιουͷҾ਺ͷDPNQMFUJPO)BOEMFSͷϒϩοΫ 
 
    FOVN@FYUFOTJCJMJUZ /4@&/6.
    OT@FSSPS@EPNBJO /4@&3303
    fl BH@FOVN /4@015*0/4
    TXJGU@XSBQQFS /4@5:1&%@&/6.
45. w TXJGU@BUUS l!@OPO4FOEBCMF 
 
    TXJGU@BUUS l!4FOEBCMF ͕࢖͑ΔॴͰ࢖͑Δ 
 
    ಉ͡એݴ΍ܕʹ෇͍ͨTXJGU@BUUS l!4FOEBCMF ͸ແࢹ͞Εͨ
    w TXJGU@BUUS !@OPO4FOEBCMF @BTTVNFE  
 
    ಉ͡એݴ΍ܕʹ෇͍ͨTXJGU@BUUS l!4FOEBCMFz ͸ແࢹ͞Εͳ͍ 0CKFDUJWF$એݴͷ4FOEBCMF
46. 0CKFDUJWF$ϧʔϧ·ͱΊ w TXJGU@BUUS l!@OPO4FOEBCMFz ͳΒ͹໌ࣔతʹOPO4FOEBCMF
    w TXJGU@BUUS l!4FOEBCMFz ·ͨ͸҉໧తʹ෇༩͞ΕΔ΋ͷ͸໌ ࣔతʹ4FOEBCMF
    w TXJGU@BUUS l!@OPO4FOEBCMF @BVEJUFE z ͳΒ͹໌ࣔతʹ OPO4FOEBCMF
    w ͪ͜Βʹ߹கͨ͠΋ͷ͸໌ࣔతʹ4FOEBCMF
    w ͦͷଞ͸OPO4FOEBCMF
47. 0CKFDUJWF$
    3FHJPOϕʔενΣοΫ w @@48*'5@"553@46110354@4&/%"#-&@%&$-4ͷ஋Ͱର Ԡͷ༗ແΛࢦఆͰ͖Δ
    w DMBOH
    BUUSJCVUF
    QSBHNBͰར༻Մೳ
48. *NQSPWJOH
    4FOEBCMF
    *OGFSFODF 1JUDI ௥ه IUUQTHJUIVCDPN%PVH(SFHPSTXJGUFWPMVUJPOCMPCTFOEBCMFJOGFSFODFQSPQPTBMTOOOOTFOEBCMFJOGFSFODFNE
49. 4FOEBCMFͷద߹ͷෛ୲ΛݮΒ͍ͨ͠
50. SFRVJSFFYQMJDJUTFOEBCMF w ίϯύΠϥϑϥά
    w ϓϩτίϧҎ֎ͷQVCMJD ·ͨ͸PQFO ͳܕ͸໌ࣔతʹ 4FOEBCMFɺ·ͨ͸OPO4FOEBCMF ˞ Λࢦఆ͠ͳ͚Ε͹ͳΒ ͳ͍ɻ 
 ˞
    OPO4FOEBCMFͷࢦఆํ๏͸ݕ౼த !VOBWBJMBCMF
    4FOEBCMFͳͲ
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