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Swift ConcurrencyでよりSwiftyに
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野瀬田 裕樹
February 22, 2026
Programming
0
110
Swift ConcurrencyでよりSwiftyに
hakodate.swift 登壇資料 #hakodate_swift
https://japan-region-swift.connpass.com/event/371217/
野瀬田 裕樹
February 22, 2026
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Transcript
4XJGU$PODVSSFODZͰ ΑΓ4XJGUZʹ ాɹ༟थʢ!ZOPTFEBʣ
4XJGUͰॻ͘ͳΒ4XJGUZͳίʔυΛॻ͖͍ͨͰ͢ΑͶʁ
ࠓճͷൃදΛػʹ4XJGUZͳίʔυΛॻ͖·͠ΐ͏ʂ
ͱݴ͍ͭͭ
4XJGUZͳίʔυͬͯԿ
4XJGUZͱ͍͏୯ޠͷҙຯ
4XJGUZͳίʔυ4XJGUΒ͍͠ίʔυ
4XJGUZͳίʔυ㱠4XJGUΒ͍͠ίʔυ
4XJGUZͳίʔυૉૣ͍ίʔυ
4XJGUZͳίʔυΛॻ͜͏ ૉૣ͍ͱݴͬͯ৭Μͳछྨ͕͋Δ w ࣮ߦ͕͍࣌ؒ w Ϗϧυ͕͍࣌ؒ w ཧղʹཁ͢Δ͕͍࣌ؒʢ4XJGUΒ͍͠ίʔυ͔͜͜ʣ
4XJGUZͳίʔυΛॻ͜͏ ૉૣ͍ͱݴͬͯ৭Μͳछྨ͕͋Δ w ࣮ߦ͕͍࣌ؒ w Ϗϧυ͕͍࣌ؒ w ཧղʹཁ͢Δ͕͍࣌ؒʢ4XJGUΒ͍͠ίʔυ͔͜͜ʣ
࣮ߦ͕͍࣌ؒॲཧͷ͓ ͶͷৼಈΛγϛϡϨʔγϣϯͯ͠ΈΑ͏ʂ Fi = k∑ j≠i (xj − xi )
શ݁߹ͯ͠Δόωͷৼಈͷ༷ࢠ
͜͏͍͏ͱ͖
"DDFMFSBUFϑϨʔϜϫʔΫ w $16্Ͱ࣌ؒͷ͔͔Δ৭ʑͳԋࢉΛߦ͏ͨΊͷϑϨʔϜϫʔΫ w ػցֶशɿ#//4 w ը૾ॲཧɿW*NBHF w σδλϧ৴߸ॲཧɿW%41 w
ϕΫτϧɺߦྻͷԋࢉɿW'PSDFʢϕΫτϧʹର͢Δࢉज़ؔӽؔͷ࣮ߦʣ ɹɹɹɹɹɹɹɹɹɹɹTJNEʢখنͳϕΫτϧߦྻͷԋࢉ༻ͷܕͱؔʣ w ઢܗɿ#-"4ʢϕΫτϧͱߦྻͷԋࢉʣ ɹɹɹɹɹ-"1"$,ʢݻ༗ɺಛҟɺߦྻҼղɺઢܗ࿈ཱํఔࣜͳͲʣ ɹɹɹɹɹ4QBSTF4PMWFSTʢߦྻ͕ૄߦྻͰ͋Δ࿈ཱํఔࣜʹର͢Δઢܗԋࢉʣ w ఆੵɿ2VBESBUVSFʢ༗ݶ·ͨແݶͷ۠ؒʹΘͨΔؔͷఆੵͷۙࣅʣ
#-"4 w #BTJD-JOFBS"MHFCSB4VCQSPHSBNTͷུͰɺઢܗԋࢉͷ"1*༷ w ͭͷ-FWFM͕͋Δ w -FWFMɿεΧϥʔԋࢉɺϕΫτϧԋࢉɺϕΫτϧϕΫτϧԋࢉ w -FWFMɿߦྻϕΫτϧԋࢉ w
-FWFMɿߦྻߦྻԋࢉ w ܭࢉͷେ෦Λ#-"4ϧʔνϯʹԡ͠ࠐΊΔ͜ͱͰߴԽͰ͖Δ ʢ͏·͘#-"4Λ͏ܗʹఆࣜԽ͢ΔͱॲཧΛߴԽͰ͖Δʣ
σϞ ύλʔϯ࣮ͯ͠Έͨ w ஞ࣍ॲཧʢ௨ৗͷGPSϧʔϓͰܭࢉʣ w ฒྻॲཧʢ5BTL(SPVQΛ࡞ͬͯฒྻԽͯ͠ܭࢉʣ w #-"4 w #-"4
ฒྻॲཧʢ5BTL(SPVQͰฒྻԽͯ͠ݸผʹ#-"4ར༻ʣ
݁Ռ ࣮ߦ࣌ؒ w /͕খ͍͞ͱ͖ɿஞ࣍ฒྻ#-"4㲈#-"4 ฒྻ w /͕େ͖͍ͱ͖ɿஞ࣍ฒྻ#-"4#-"4 ฒྻ w ฒྻԽΑΓ#-"4ͷޮՌ͕ѹత
w #-"4 ฒྻԽαΠζ͕େ͖͍࣌ͷΈ༗ޮ
#-"4 w $16ͷϕΫτϧॲཧػೳΛ׆༻͢Δߴͳ෦࣮͕ҝ͞Ε͍ͯΔ w ࣮ߦ࣌ʹͦͷϓϩηοαʹ࠷దͳ໋ྩΛબͿΑ͏ʹͳ͍ͬͯΔ w ͜ͷ࠷దԽ͕͔ͳΓޮ͍͍ͯΔͷͰશવԋࢉ͕ҧ͏
ઢܗॲཧΛߴԽ͍ͨ࣌͠ ͳΔ͘"DDFMFSBUFϑϨʔϜϫʔΫΛ͑ΔܗʹఆࣜԽ͢Δ w ͕ૄߦྻͳ࿈ཱํఔࣜΛղ͖͍ͨ߹ˠ4QBSTF4PMWFST w ີߦྻͳઢܗ࿈ཱํఔࣜΛղ͘ͳͲɺ యܕతͳઢܗʹऔΓΈ͍ͨ߹ˠ-"1"$, w ϕΫτϧߦྻͷԋࢉΛ͍ͨ͠߹ˠ#-"4
w ϕΫτϧʹࢉज़ӽؔΛద༻͢Δ߹ˠW'PSDF w %PVCMFཁૉ͕ཁૉҎԼͷϕΫτϧYཁૉҎԼͷߦྻΛॲཧ͍ͨ͠߹ˠTJNE
ઢܗॲཧΛߴԽ͍ͨ࣌͠ ՃͰඞཁͳΒϚϧνεϨουԽ͢Δ w #-"4ͷ෦ฒྻʹͤΔύλʔϯ w ࣗͰखಈฒྻ͢Δύλʔϯ
ઢܗॲཧΛߴԽ͍ͨ࣌͠ ՃͰඞཁͳΒϚϧνεϨουԽ͢Δ w #-"4UISFBEJOH.PEFMʹNVMUJ5ISFBEFEΛઃఆ͢Δ w ʏʹTJOHMF5ISFBEFEΛઃఆͷ্ɺࣗͰϚϧνεϨουԽ͢Δ
ઢܗॲཧΛߴԽ͍ͨ࣌͠ ՃͰඞཁͳΒϚϧνεϨουԽ͢Δ w #-"4UISFBEJOH.PEFMʹNVMUJ5ISFBEFEΛઃఆ͢Δ w ాڥͰ͋·Γ࠷దԽͯ͘͠Εͳ͔ͬͨ w ͭ·Γ࣮αΠζʹΑͬͯޮ͔ͳ͍͜ͱ͕͋ΔͷͰɺཁܭଌ w
ಉ্ʹTJOHMF5ISFBEFEΛઃఆͷ্ɺࣗͰϚϧνεϨουԽ͢Δ
ઢܗॲཧΛߴԽ͍ͨ࣌͠ ՃͰඞཁͳΒϚϧνεϨουԽ͢Δ w #-"4UISFBEJOH.PEFMʹNVMUJ5ISFBEFEΛઃఆ͢Δ w TJOHMF5ISFBEFEΛઃఆͷ্ɺࣗͰϚϧνεϨουԽ͢Δ w 5BTL(SPVQͰෳλεΫΛ࡞Δ w
%JTQBUDI2VFVFDPODVSSFOU1FSGPSN JUFSBUJPOTFYFDVUF ͰฒྻGPSϧʔϓΛ࡞Δ
DPODVSSFOU1MBUGPSNʹ͍ͭͯ w ࢦఆճ JUFSBUJPOT ͚ͩҾͷΫϩʔδϟʔΛ࣮ߦ͢Δؔ w ෳͷίΞΛͬͯޮతͳฒྻGPSϧʔϓͱ࣮ͯ͠ߦͯ͘͠ΕΔ w ಉظॲཧͳͷͰ.BJO"DUPS͔ΒݺͿͱةݥ w
ಉͷॲཧ4XJGU$PODVSSFODZʹͳ͍ʢͷͰࣗ࡞ͷඞཁ͋Γʣ w JUFSBUJPOTΛར༻ՄೳͳίΞͷഒҎ্ʹઃఆ͢Δͷ͕͓͢͢Ί
ͦ͏͍͑ ʮඞཁͳΒϚϧνεϨουԽ͢Δʯ 88%$ͰࣅͨΑ͏ͳΛฉ͖·ͨ͠Ͷ
None
None
None
͡Ό͍͋ͭͲ͏ͬͯฒྻԽ͢Δͷʁ
$PODVSSFODZಋೖखॱ w ϝΠϯͷΞϓϦϞδϡʔϧ6*ϞδϡʔϧͰ %FGBVMU"DUPS*TPMBUJPOΛ.BJO"DUPSʹઃఆ͢Δ ʢ6*ϞδϡʔϧͰ%FGBVMU"DUPS*TPMBUJPO.BJO"DUPSʣ
$PODVSSFODZಋೖखॱ w 6*ϞδϡʔϧͰ%FGBVMU"DUPS*TPMBUJPO.BJO"DUPS w ϝΠϯεϨουͷෛՙ͕ߴ͍߹ɺ ฒߦॲཧΛಋೖ͢Δલʹ*OTUSVNFOUTͳͲͰ ϘτϧωοΫΛಛఆͯ͠ղফΛࢼΈΔ ʢϝΠϯεϨουͷෛՙ͕ߴ͍ͳΒ*OTUSVNFOUTͰௐࠪˠղফʣ
$PODVSSFODZಋೖखॱ w 6*ϞδϡʔϧͰ%FGBVMU"DUPS*TPMBUJPO.BJO"DUPS w ϝΠϯεϨουͷෛՙ͕ߴ͍ͳΒ*OTUSVNFOUTͰௐࠪͯ͠ղফ w ϝΠϯεϨου͔Βग़͍ͨ͠ ʢݺͼग़͠ݩͱҧ͏"DUPSͰಈ࡞͍ͤͨ͞ʣ߹ɺ ؔʹ!DPODVSSFOUΛ༩͢Δ ʢόοΫάϥϯυͰॲཧ͍ͨ͠ͳΒ!DPODVSSFOUʣ
$PODVSSFODZಋೖखॱ w 6*ϞδϡʔϧͰ%FGBVMU"DUPS*TPMBUJPO.BJO"DUPS w ϝΠϯεϨουͷෛՙ͕ߴ͍ͳΒ*OTUSVNFOUTͰௐࠪͯ͠ղফ w όοΫάϥϯυͰॲཧ͍ͨ͠ͳΒ!DPODVSSFOU w ڞ༗͍ͨ͠εϨουηʔϑͳՄมঢ়ଶ4FOEBCMFΛ͚ͭΔ
$PODVSSFODZಋೖखॱ w 6*ϞδϡʔϧͰ%FGBVMU"DUPS*TPMBUJPO.BJO"DUPS w ϝΠϯεϨουͷෛՙ͕ߴ͍ͳΒ*OTUSVNFOUTͰௐࠪͯ͠ղফ w όοΫάϥϯυͰॲཧ͍ͨ͠ͳΒ!DPODVSSFOU w ڞ༗͍ͨ͠εϨουηʔϑͳՄมঢ়ଶ4FOEBCMFΛ͚ͭΔ w
ඇ4FOEBCMFͰOPOJTPMBUFEͰࡁΉͳΒOPOJTPMBUFEʹ͢Δ
$PODVSSFODZಋೖखॱ w 6*ϞδϡʔϧͰ%FGBVMU"DUPS*TPMBUJPO.BJO"DUPS w ϝΠϯεϨουͷෛՙ͕ߴ͍ͳΒ*OTUSVNFOUTͰௐࠪͯ͠ղফ w όοΫάϥϯυͰॲཧ͍ͨ͠ͳΒ!DPODVSSFOU w ڞ༗͍ͨ͠εϨουηʔϑͳՄมঢ়ଶ4FOEBCMFΛ͚ͭΔ w
ඇ4FOEBCMFͰOPOJTPMBUFEͰࡁΉͳΒOPOJTPMBUFEʹ͢Δ w සൟͳίϯςΩετεΠον͕ൃੜ͢Δ߹BDUPSͰՄมঢ়ଶΛཧ͢Δ
·ͱΊ
4XJGU$PODVSSFODZͰฒྻԽ͢Δ㱠4XJGUZ ʢԿͰ͔ΜͰฒྻԽ͢Ε͍͍Θ͚͡Όͳ͍ʣ
ஈ֊తʹฒྻԽΛऔΓΉ͜ͱ͕4XJGUZʹܨ͕Δ ·ͣ࠷ॳʹΞϧΰϦζϜඪ४ϥΠϒϥϦͷ׆༻ʹऔΓ͏
ஈ֊తʹฒྻԽΛऔΓΉ͜ͱ͕4XJGUZʹܨ͕Δ ·ͣ࠷ॳʹΞϧΰϦζϜඪ४ϥΠϒϥϦͷ׆༻ʹऔΓ͏ ύϑΥʔϚϯενϡʔχϯάܭଌ͕ඞਢ
ઢܗΛΔͳΒ"DDFMFSBUFϑϨʔϜϫʔΫ͓͢͢ΊͰ͢ʂ
ʙ'JOʙ