そろそろCombine

J04%$+BQBO%": ͦΖͦΖ$PNCJOF

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$PNCJOF IUUQTQJYBCBZDPNKBVTFSTXTZQFSFL

$PNCJOFͱ͸ʁ

"VOJ f i FE EFDMBSBUJWF"1*GPS QSPDFTTJOHWBMVFTPWFSUJNF WWDC2019 Introducing Combine

l5IF$PNCJOFGSBNFXPSLQSPWJEFT BEFDMBSBUJWF4XJGU"1*GPS QSPDFTTJOHWBMVFTPWFSUJNF 5IFTFWBMVFTDBOSFQSFTFOUNBOZ LJOETPGBTZODISPOPVTFWFOUTz https://developer.apple.com/documentation/combine

l5IF$PNCJOFGSBNFXPSLQSPWJEFT BEFDMBSBUJWF4XJGU"1*GPS QSPDFTTJOHWBMVFTPWFSUJNF 5IFTFWBMVFTDBOSFQSFTFOUNBOZ LJOETPGBTZODISPOPVTFWFOUTz https://developer.apple.com/documentation/combine ࿈ଓͨ͠ ଟछྨͷඇಉظॲཧͳͲΛ ୯Ұͷํ๏Ͱѻ͏એݴతͳ"1*

ಉظతͳॲཧ .BJO5ISFBE WBSTUBUFlz TUBUFl*NIVOHSZz QSJOU TUBUF *`NIVOHSZ

ಉظతͳॲཧ .BJO5ISFBE WBSTUBUFlz TUBUFl*`NIVOHSZz QSJOU TUBUF *`NIVOHSZ

.BJO5ISFBE WBSTUBUFlz TUBUFl*`NIVOHSZz QSJOU TUBUF ඇಉظͳॲཧ 5ISFBE TUBUFl*`NBOHSZz ͓ئ͍

.BJO5ISFBE WBSTUBUFlz TUBUFl*`NIVOHSZz QSJOU TUBUF ඇಉظͳॲཧ 5ISFBE TUBUFl*`NBOHSZz ݁Ռ͸ؾʹͤͣ࣍΁ਐΉ ͓ئ͍

.BJO5ISFBE WBSTUBUFlz TUBUFl*`NIVOHSZz QSJOU TUBUF 5ISFBE TUBUFl*`NBOHSZz ඇಉظͳॲཧ IVOHSZ BOHSZ
*`Nʜ

ඇಉظॲཧͷ೉͠͞ ͍ͭ݁Ռ͕ฦͬͯ͘Δ͔Θ͔Βͳ͍ wλΠϛϯά࣍ୈͰ݁Ռ͕มΘͬͯ͠·͏ϦεΫ w༧ظͤ͵λΠϛϯάͰڍಈ͕ಥવมΘͬͯ͠·͏ϦεΫ

J04ͰඇಉظΛѻ͏ํ๏ /PUJ f i DBUJPO $FOUFS 5BSHFU"DUJPO %FMFHBUF $MPTVSF $BMMCBDLT
σʔλ ߋ৽ ,FZ7BMVF 0CTFSWJOH ,70

ඇಉظॲཧͷ೉͠͞ J04Ͱͷ೉͠͞ ͍ͭ݁Ռ͕ฦͬͯ͘Δ͔Θ͔Βͳ͍ wλΠϛϯά࣍ୈͰ݁Ռ͕มΘͬͯ͠·͏ϦεΫ wࢥ͍΋دΒͳ͍λΠϛϯάͰڍಈ͕มΘΔϦεΫ ॲཧͷํ๏͕৔߹ʹΑͬͯҟͳΔ wॲཧͷྲྀΕ్͕੾Εͯ͠·͏͜ͱ͕͋Δ

ඇಉظॲཧͷ೉͠͞ J04Ͱͷ೉͠͞ ͍ͭ݁Ռ͕ฦͬͯ͘Δ͔Θ͔Βͳ͍ wλΠϛϯά࣍ୈͰ݁Ռ͕มΘͬͯ͠·͏ϦεΫ wࢥ͍΋دΒͳ͍λΠϛϯάͰڍಈ͕มΘΔϦεΫ ॲཧͷํ๏͕৔߹ʹΑͬͯҟͳΔ wॲཧͷྲྀΕ్͕੾Εͯ͠·͏͜ͱ͕͋Δ wผͷ৔ॴͰॲཧ͢Δ͜ͱ͕ඞཁͳ৔߹΋͋Δ

$PNCJOF IUUQTQJYBCBZDPNKBVTFSTXTZQFSFL

͋ΒΏΔॲཧΛ1VCMJTIFSʹ 'PVOEBUJPO w /PUJ f i DBUJPODFOUFS w 5BSHFU"DUJPO w
"EIPDDBMMCBDLT w 63-4FTTJPO w ,70 $PNCJOF 1VCMJTIFS 4XJGU6* w !#JOEJOH w !0CTFSWFE0CKFDU w !4UBUF $PSF%BUB w 'FUDIFE3FRVFTU w /4.BOBHFE0CKFDU

ςΩετೖྗ Ϙλϯ੍ޚ ΠϯσΟέʔλදࣔ ೖྗΛඵ଴ͭ ະೖྗνΣοΫ ॏෳνΣοΫ ೖྗ஋νΣοΫ"1*ૹ৴ ݁ՌΛ7JFXʹ൓ө Ϙλϯ੍ޚ ΠϯσΟέʔλදࣔ
ϝΠϯεϨουͰॲཧ

Target/Action Closure Closure ςΩετೖྗ Ϙλϯ੍ޚ ΠϯσΟέʔλදࣔ ೖྗΛඵ଴ͭ ະೖྗνΣοΫ ॏෳνΣοΫ ೖྗ஋νΣοΫ"1*ૹ৴
݁ՌΛ7JFXʹ൓ө Ϙλϯ੍ޚ ΠϯσΟέʔλදࣔ ϝΠϯεϨουͰॲཧ

Ϙλϯ੍ޚ ΠϯσΟέʔλදࣔ ະೖྗνΣοΫ ॏෳνΣοΫ ݁ՌΛ7JFXʹ൓ө Ϙλϯ੍ޚ ΠϯσΟέʔλදࣔ ϝΠϯεϨουͰॲཧ ςΩετೖྗ ೖྗΛඵ଴ͭ
ೖྗ஋νΣοΫ"1*ૹ৴ Target/Action Closure Closure If guard If Closure

શ෦1VCMJTIFS Noti f i cationCenter.Publisher Publishers.Map Publishers.HandleEvents Publishers.Debounce Publishers.Filter Publishers.RemoveDuplicates
Publishers.FlatMap Publishers.ReceiveOn Publishers.HandleEvents

σʔλͷಉظ ࣗಈͰ࠷৽ঢ়ଶʹߋ৽ Subscribers.Assign

ෳ਺Օॴ͔Βͷσʔλͷಉظ σʔλͷߋ৽ʹ߹Θͤͯ 7JFXΛߋ৽͢ΔͨΊʹ ϝιουΛݺͼग़͢ඞཁ͕͋Δ

ෳ਺Օॴ͔Βͷσʔλͷಉظ σʔλͱ7JFXͷߋ৽Λ ҰՕॴʹू໿Ͱ͖Δ

͋ΒΏΔॲཧΛ1VCMJTIFSʹ 5BSHFU"DUJPO %FMFHBUF 1VCMJTIFS .BQ f l BU.BQ 'JMUFS
3FNPWF%VQMJDBUF ʜ ʜ ʜ ,FZ7BMVF 0CTFSWJOH ,70 /PUJ f i DBUJPO $FOUFS $MPTVSF $BMMCBDLT

ʮ͜͏͢Δʯͱࡉ͔͘ࢦࣔ͢Δ ͷͰ͸ͳ͘ ʮ͜͏͍ͨ͠ʯͱ໨తΛએݴ͢Δ

໨త ޴ׇ͕͍ͨͷͰਫΛҿΉ

ࢦࣔత ʮྫྷଂݿ͔ΒϖοτϘτϧͷਫΛऔΓग़ͯ͠ɺ ίοϓʹ஫͍ͰɺҿΈ·͢ɻʯ ໨త ޴ׇ͕͍ͨͷͰਫΛҿΉ

એݴత ʮड͚औͬͨਫΛҿΈ·͢ɻʯ ໨త ޴ׇ͕͍ͨͷͰਫΛҿΉ

ʮએݴతʯͷϝϦοτ wຊདྷͷ໾ׂʹूதͰ͖Δ wίʔυ͕୹͘ͳΔ w֎෦ঢ়ଶʹґଘͤͣ࠶ར༻͠΍͍͢

ςΩετೖྗ Ϙλϯ੍ޚ ΠϯσΟέʔλදࣔ ೖྗΛඵ଴ͭ ະೖྗνΣοΫ ॏෳνΣοΫ ೖྗ஋νΣοΫ"1*ૹ৴ ݁ՌΛ7JFXʹ൓ө Ϙλϯ੍ޚ ΠϯσΟέʔλදࣔ
ϝΠϯεϨουͰॲཧ ࢦࣔత

ςΩετೖྗ ೖྗΛඵ଴ͭ ະೖྗνΣοΫ ॏෳνΣοΫ ೖྗ஋νΣοΫ"1*ૹ৴ ݁ՌΛ7JFXʹ൓ө Ϙλϯ੍ޚ ΠϯσΟέʔλඇදࣔ ϝΠϯεϨουͰॲཧ Ϙλϯ੍ޚ
ΠϯσΟέʔλදࣔ એݴత

$PNCJOFΛ࢖͏ϝϦοτ ಺෦Ͱͷ࠷దԽ͕ظ଴Ͱ͖Δ wެ։͞Ε͍ͯͳ͍"1*Λར༻ͨ͠ύϑΥʔϚϯεͷௐ੔ w ଞͷϑϨʔϜϫʔΫͱ࿈ܞ'PVOEBUJPO4XJGU6*

$PNCJOFΛ࢖͏ϝϦοτ ಺෦Ͱͷ࠷దԽ͕ظ଴Ͱ͖Δ wެ։͞Ε͍ͯͳ͍"1*Λར༻ͨ͠ύϑΥʔϚϯεͷௐ੔ w ଞͷϑϨʔϜϫʔΫͱ࿈ܞ'PVOEBUJPO4XJGU6* ߴ͍඼࣭͕ظ଴Ͱ͖Δ wมߋͷӨڹ͕গͳ͍ w։ൃऀ͸Ϣʔβʔ͔ͭςελʔ

ओཁͳΫϥε

1VCMJTIFS

1VCMJTIFS ಛఆͷܕͷ஋Λ࣌ؒͱͱ΋ʹ࿈ଓతʹྲྀ͢ 1VCMJTIFS0VUQVU 'BJMVSF&SSPS 0VUQVUਖ਼ৗ࣌ʹ1VCMJTIFS͕ྲྀ͢஋ͷܕ 'BJMVSFΤϥʔ࣌ʹ1VCMJTIFS͕ྲྀ͢ͷ&SSPSܕ

1VCMJTIFS ಛఆͷܕͷ஋Λ࣌ؒͱͱ΋ʹ࿈ଓతʹྲྀ͢ 1VCMJTIFS0VUQVU 'BJMVSF&SSPS 0VUQVUਖ਼ৗ࣌ʹ1VCMJTIFS͕ྲྀ͢஋ͷܕ 'BJMVSFΤϥʔ࣌ʹ1VCMJTIFS͕ྲྀ͢ͷ&SSPSܕ ᶃ7BMVF 0VUQVU $PNQMFUJPO ᶄ
f i OJTIFE ᶅGBJMVSF 'BJMVSF

1VCMJTIFS ಛఆͷܕͷ஋Λ࣌ؒͱͱ΋ʹ࿈ଓతʹྲྀ͢ 0VUQVU 0VUQVU f i OJTIFE 0VUQVU $PNQMFUJPO͢Δ·Ͱ஋Λग़ྗ͠ଓ͚Δ

1VCMJTIFS ಛఆͷܕͷ஋Λ࣌ؒͱͱ΋ʹ࿈ଓతʹྲྀ͢ 0VUQVU 0VUQVU GBJMVSF 0VUQVU 0VUQVU f i

1VCMJTIFS ಛఆͷܕͷ஋Λ࣌ؒͱͱ΋ʹ࿈ଓతʹྲྀ͢ GBJMVSF f i OJTIFE $PNQMFUJPO͞ΕΔͱೋ౓ͱ஋͸ྲྀ͞ͳ͍

1VCMJTIFS ಛఆͷܕͷ஋Λ࣌ؒͱͱ΋ʹ࿈ଓతʹྲྀ͢ f i OJTIFE <
>QVCMJTIFS 1VCMJTIFS*OU /FWFS

4VCTDSJCFS

4VCTDSJCFS 1VCMJTIFS͔Βཉ͍͠෼͚ͩ஋Λड͚औΔ 4VCTDSJCFS*OQVU 'BJMVSF&SSPS *OQVUਖ਼ৗ࣌ʹ4VCTDSJCFS͕ड͚औΔ஋ͷܕ 'BJMVSFΤϥʔ࣌ʹ1VCMJTIFS͕ྲྀ͢ͷ&SSPSܕ

4VCTDSJCFS 1VCMJTIFS͔Βཉ͍͠෼͚ͩ஋Λड͚औΔ 4VCTDSJCFS*OQVU 'BJMVSF&SSPS *OQVUਖ਼ৗ࣌ʹ4VCTDSJCFS͕ड͚औΔ஋ͷܕ 'BJMVSFΤϥʔ࣌ʹ1VCMJTIFS͕ྲྀ͢ͷ&SSPSܕ 4VCTDSJCFS*OQVU 'BJMVSF&SSPS 1VCMJTIFS0VUQVU 'BJMVSF&SSPS
ܕΛҰகͤ͞Δ ܕΛҰகͤ͞Δ

4VCTDSJCFS 1VCMJTIFS͔Βཉ͍͠෼͚ͩ஋Λड͚औΔ TJOL BTTJHO 1VCMJTIFS 4VCTDSJCFS

1VCMJTIFS 4VCTDSJCFS 4VCTDSJCFS 4VCTDSJCFS ෳ਺ͷ4VCTDSJCFSͰͭͷ1VCMJTIFSͷ஋΋ड͚औΕΔ

4VCTDSJCFSओಋ 4VCTDSJCFS ˞'VUVSFͳͲͷྫ֎͋Γ

4VCTDSJCFSओಋ 4VCTDSJCFS ˞'VUVSFͳͲͷྫ֎͋Γ #BDL1SFTTVSF

#BDL1SFTTVSF 4VCTDSJCFS͕ඞཁͳྔΛௐ੔Ͱ͖Δ 1VCMJTIFS 4VCTDSJCFS

#BDL1SFTTVSF 4VCTDSJCFS͕ඞཁͳྔΛௐ੔Ͱ͖Δ 4VCTDSJCFS %FNBOE VOMJNJUFE͋Δ͚ͩશ෦Լ͍͞ OPOFԿ΋͍Γ·ͤΜ NBY *OU *OU෼Լ͍͞
1VCMJTIFS ͜ͷ%FNBOE෼͍ͩ͘͞

#BDL1SFTTVSF 4VCTDSJCFS͕ඞཁͳྔΛௐ੔Ͱ͖Δ 4VCTDSJCFS 1VCMJTIFS %FNBOE෼͚ͩ0VUQVU ͜ͷ%FNBOE෼͍ͩ͘͞

#BDL1SFTTVSF 4VCTDSJCFS͕ඞཁͳྔΛௐ੔Ͱ͖Δ 4VCTDSJCFS ్தͰ%FNBOEௐ੔Մ 1VCMJTIFS %FNBOE෼͚ͩ0VUQVU ͜ͷ%FNBOE෼͍ͩ͘͞ %FNBOE VOMJNJUFE͋Δ͚ͩશ෦Լ͍͞
OPOFࠓͷ··Ͱ͍͍Ͱ͢ɻ NBY *OU *OU෼௥Ճͯ͠Լ͍͞

#BDL1SFTTVSF ׆༻ྫ ෳ਺ͷඇಉظॲཧΛ ݺͼग़ͨ͠ॱ൪௨Γʹ ݁ՌΛड͚औΔ ݁Ռ͜ͷจࣈॱ௨Γʹग़ྗ͞Ε·͢ ࿈ଓͯ͠ඇಉظ௨৴Λ࣮ߦ f l BU.BQ
NBY1VCMJTIFSTNBY

4VCTDSJQUJPO

1VCMJTIFS 4VCTDSJCFS ʁ

4VCTDSJQUJPO 1VCMJTIFSͱ4VCTDSJCFSΛܨ͛Δ 1VCMJTIFS 4VCTDSJCFS 4VCTDSJQUJPO

4VCTDSJQUJPO $BODFMMBCMF 1VCMJTIFS 4VCTDSJCFS QSPUPDPM $BODFMMBCMF 4VCTDSJQUJPO

4VCTDSJQUJPO $BODFMMBCMF 1VCMJTIFS DBODFM ͍ͯͩ͘͠͞ 4VCTDSJCFS QSPUPDPM $BODFMMBCMF
4VCTDSJQUJPO

4VCTDSJQUJPO $BODFMMBCMF 1VCMJTIFS DBODFM 4VCTDSJCFS QSPUPDPM $BODFMMBCMF 4VCTDSJQUJPO
DBODFM ͍ͯͩ͘͠͞

4VCTDSJQUJPO "OZ$BODFMMBCMF͸ࣗಈͰDBODFM͢Δ 1VCMJTIFS QSPUPDPM $BODFMMBCMF "OZ$BODFMMBCMF 4VCTDSJCFS

4VCTDSJQUJPO "OZ$BODFMMBCMF͸ࣗಈͰDBODFM͢Δ 1VCMJTIFS QSPUPDPM $BODFMMBCMF "OZ$BODFMMBCMF ϝϞϦ͔Βղ์͞ΕΔ OJMʹͳΔ ͱ
4VCTDSJCFS

4VCTDSJQUJPO "OZ$BODFMMBCMF͸ࣗಈͰDBODFM͢Δ 1VCMJTIFS QSPUPDPM $BODFMMBCMF "OZ$BODFMMBCMF DBODFM ϝϞϦ͔Βղ์͞ΕΔ OJMʹͳΔ
ͱ 4VCTDSJCFS

4VCTDSJQUJPO "OZ$BODFMMBCMF͸ࣗಈͰDBODFM͢Δ "OZ$BODFMMBCMF

4VCTDSJQUJPO "OZ$BODFMMBCMF͸ࣗಈͰDBODFM͢Δ ϝϞϦ͔Βղ์ EFJOJU ͞ΕΔͱ

4VCTDSJQUJPO "OZ$BODFMMBCMF͸ࣗಈͰDBODFM͢Δ ϝϞϦ͔Βղ์ EFJOJU ͞ΕΔ

4VCTDSJQUJPO "OZ$BODFMMBCMF͸ࣗಈͰDBODFM͢Δ "OZ$BODFMMBCMFDBODFM "OZ$BODFMMBCMFDBODFM "OZ$BODFMMBCMFDBODFM "OZ$BODFMMBCMFDBODFM
ʜ

4VCTDSJQUJPO "OZ$BODFMMBCMF͸ࣗಈͰDBODFM͢Δ "OZ$BODFMMBCMFDBODFM "OZ$BODFMMBCMFDBODFM "OZ$BODFMMBCMFDBODFM "OZ$BODFMMBCMFDBODFM
ʜ EFJOJU \ʜ^

4VCTDSJQUJPO "OZ$BODFMMBCMF͸อ࣋͠ͳ͍ͱ͙͢ʹΩϟϯηϧ͞ΕΔ

4VCTDSJQUJPO "OZ$BODFMMBCMF͸อ࣋͠ͳ͍ͱ͙͢ʹΩϟϯηϧ͞ΕΔ "OZ$BODFMMBCMF

4VCTDSJQUJPO "OZ$BODFMMBCMF͸อ࣋͠ͳ͍ͱ͙͢ʹΩϟϯηϧ͞ΕΔ

ॲཧͷྲྀΕ ࢓૊Έ

4VCTDSJCFS↔1VCMJTIFS 1VCMJTIFS 4VCTDSJCFS 1VCMJTIFSTVCTDSJCF @ ݺͿ ಺෦ͰSFDFJWF TVCTDSJCFS
Λݺͼ 4VCTDSJCFSͱܨ͕Δ   ⁞ ஋ͷग़ྗΛґཔ͢Δ

4VCTDSJCFS↔1VCMJTIFS 1VCMJTIFS 4VCTDSJCFS ஋ͷग़ྗΛґཔ͢Δ 1VCMJTIFSTVCTDSJCF @ ݺͿ ಺෦ͰSFDFJWF
TVCTDSJCFS Λݺͼ 4VCTDSJCFSͱܨ͕Δ 4VCTDSJQUJPOΛड͚औΔ ⁞   ⁠ 4VCTDSJCFSSFDFJWF TVCTDSJQUJPO 4VCTDSJQUJPO

4VCTDSJCFS↔4VCTDSJQUJPO 4VCTDSJCFS SFRVFTU 4VCTDSJCFST%FNBOE ⁡ 4VCTDSJQUJPO %FNBOEΛ఻͑Δ

4VCTDSJCFS↔4VCTDSJQUJPO 4VCTDSJCFS %FNBOEΛ఻͑Δ SFRVFTU 4VCTDSJCFST%FNBOE ⁢ 4VCTDSJQUJPO ஋Λ܁Γฦ͠ૹड৴͢Δ
SFDFJWF WBMVF 4VCTDSJCFST%FNBOE 4VCTDSJCFS͸ड͚औͬͨ஋Λݩʹ%FNBOEΛௐ੔Մ ⁡

4VCTDSJCFS↔4VCTDSJQUJPO 4VCTDSJCFS $PNQMFUJPOΛड͚औΔ ⁢ ⁣ SFDFJWF f i OJTIFE
SFDFJWF GBJMVSF 4VCTDSJQUJPO ஋Λ܁Γฦ͠ૹड৴͢Δ SFDFJWF WBMVF 4VCTDSJCFST%FNBOE 4VCTDSJCFS͸ड͚औͬͨ஋Λݩʹ%FNBOEΛௐ੔Մ %FNBOEΛ఻͑Δ SFRVFTU 4VCTDSJCFST%FNBOE ⁡

શମ૾ 4VCTDSJCFS $PNQMFUJPOΛड͚औΔ ⁣ 4VCTDSJQUJPO ⁢ ஋Λ܁Γฦ͠ૹड৴͢Δ %FNBOEΛ఻͑Δ
⁡ ஋ͷग़ྗΛґཔ͢Δ ⁞   4VCTDSJQUJPOΛड͚औΔ ⁠ 1VCMJTIFS

ൃදޙͷิ଍ ˞όʔδϣϯͰͷࠩҟʹ஫ҙ J04dJ04 NBD04d 4VCTDSJQUJPOΛड͚औΔॲཧͱ0VUQVUΛड͚औΔॲཧ͕ඇಉظͰߦΘΕ͍ͯͨ 4VCTDSJCF͢Δલʹ0VUQVU͕ྲྀΕͯ͠·͍ड͚औΕͳ͍Մೳੑ͕͋Δ IUUQTGPSVNTTXJGUPSHUDPNCJOFSFDFJWFPOSVOMPPQNBJOMPTFTTFOUWBMVFIPXDBOJNBLFJUXPSL J04Ҏ߱ NBD04Ҏ߱ 4VCTDSJQUJPOΛड͚औΔॲཧͷޙʹ0VUQVUΛड͚औΔॲཧ͕ॱ൪ʹߦΘΕΔ
0VUQVUΛશͯड͚औΕΔ͜ͱΛอূ

ॲཧͷྲྀΕ ίʔυ

1VCMJTIFS 1VCMJTIFS*OU /FWFS ഑ྻ1VCMJTIFS

TJOL $MPTVSFϕʔεͰ0VUQVUͱ$PNQMFUJPOΛड͚औΔ

4VCTDSJQUJPOΛड͚औΔ ⁠ 4VCTDSJCFS $PNQMFUJPOΛड͚औΔ ⁣ 4VCTDSJQUJPO ⁢ ஋Λ܁Γฦ͠ૹड৴͢Δ
%FNBOEΛ఻͑Δ ⁡ ஋ͷग़ྗΛґཔ͢Δ ⁞   1VCMJTIFS TJOL

4VCTDSJQUJPOΛ౉͢ ⁠ 4VCTDSJCFS $PNQMFUJPOΛ఻͑Δ ⁣ 4VCTDSJQUJPO ⁢ ஋Λ܁Γฦ͠ૹड৴͢Δ
%FNBOEΛ఻͑Δ ⁡ ஋ͷग़ྗΛґཔ͢Δ ⁞   1VCMJTIFS TJOL ͋Δ͚ͩԼ͍͞ VOMJNJUFE

TJOL SFDFJWF7BMVF SFDFJWF$PNQMFUJPO

TJOL SFDFJWF7BMVF SFDFJWF7BMVF SFDFJWF7BMVF SFDFJWF7BMVF SFDFJWF$PNQMFUJPO

TJOL SFDFJWF7BMVF SFDFJWF7BMVF SFDFJWF7BMVF SFDFJWF$PNQMFUJPO f i OJTIFE SFDFJWF7BMVF SFDFJWF$PNQMFUJPO

TJOL TUPSF

BTTJHO UPPO ,FZ1BUIΛ࢖ͬͯΦϒδΣΫτͷ஋ʹ7BMVFΛ൓ө

BTTJHO UPPO ,FZ1BUIΛ࢖ͬͯΦϒδΣΫτͷ஋ʹ7BMVFΛ൓ө 'BJMVSF͕/FWFSͷ৔߹ʹར༻Մೳ 1VCMJTIFS*OU /FWFS

BTTJHO UPPO TUPSF

શମ૾ 4VCTDSJCFS $PNQMFUJPOΛड͚औΔ ⁣ 4VCTDSJQUJPO ⁢ ஋Λ܁Γฦ͠ૹड৴͢Δ %FNBOEΛ఻͑Δ
⁡ ஋ͷग़ྗΛґཔ͢Δ ⁞   4VCTDSJQUJPOΛड͚औΔ ⁠ 1VCMJTIFS

4VCKFDU

4VCKFDU ࣗΒ஋Λ1VCMJTIͰ͖Δ1VCMJTIFS 1VCMJTIFS 4VCKFDU *NNVUBCMF SFBEPOMZ ΠϕϯτͷൃੜʹԠͯ͡ ࣗಈͰ஋Λग़ྗ
.VUBCMF SFBEXSJUF खಈͰ஋Λग़ྗ

1BTTUISPVHI4VCKFDU 4VCKFDU w 4VCTDSJCFޙʹ1VCMJTI͞Εͨ஋Λड͚औΔ w ॳظ஋͸ෆཁ w ΠϕϯτΛ఻͑Δ৔߹ͳͲʹ࢖༻

$VSSFOU7BMVF4VCKFDU 4VCKFDU w ݱࡏ஋ͱ4VCTDSJCFޙʹ1VCMJTI͞Εͨ஋Λड͚औΔ w ॳظ஋͕ඞཁ w ঢ়ଶΛ؂ࢹ͢Δ࣌ͳͲʹ࢖༻

$VSSFOU7BMVF4VCKFDU 4VCKFDU ग़ྗํ๏͕छྨ͋Δ w ݱࡏ஋ͱ4VCTDSJCFޙʹ1VCMJTI͞Εͨ஋Λड͚औΔ w ॳظ஋͕ඞཁ w ঢ়ଶΛ؂ࢹ͢Δ࣌ͳͲʹ࢖༻

!1VCMJTIFE

ˏ1VCMJTIFE ී௨ͷม਺ʹ1VCMJTIFSػೳΛ͚ͭΔ

ˏ1VCMJTIFE ී௨ͷม਺ʹ1VCMJTIFSػೳΛ͚ͭΔ Λ௨ͯ͠1VCMJTIFSʹΞΫηεͰ͖Δ

BTTJHO JOPVUUP J04 4VCTDSJQUJPOͷ؅ཧෆཁ ˏ1VCMJTIFE

ˏ1VCMJTIFE DMBTT಺ͷϓϩύςΟʹͷΈઃఆՄೳ

ؾΛ͚͍ͭͨϙΠϯτ

4VCKFDU!1VCMJTIFE DMBTTΛར༻͢Δ࣌ͷ஫ҙ఺ DMBTTͷΠϯελϯε͸มߋ͞Εͳ͍ͷͰ ಺෦ͷ஋͸มߋ͞ΕΔ͕஋͸ग़ྗ͞Εͳ͍

DMBTTͷΠϯελϯε͸มߋ͞Εͳ͍ͷͰ ಺෦ͷ஋͸มߋ͞ΕΔ͕஋͸ग़ྗ͞Εͳ͍ UFNQFSBUVSFWBMVF͸ʹͳΔ ͸ग़ྗ͞Εͳ͍ 4VCKFDU!1VCMJTIFE DMBTTΛར༻͢Δ࣌ͷ஫ҙ఺

0QFSBUPS

0QFSBUPS 1VCMJTIFS͔Βड͚औͬͨ஋͔Β৽͍͠1VCMJTIFSΛੜ੒ 1VCMJTIFS 0QFSBUPS 1VCMJTIFS

0QFSBUPS 1VCMJTIFS͔Βड͚औͬͨ஋͔Β৽͍͠1VCMJTIFSΛੜ੒ 1VCMJTIFS 0QFSBUPS 1VCMJTIFS 0QFSBUPS
1VCMJTIFS ࿈݁ͯ͠࢖͏͜ͱ͕Ͱ͖Δ

શ෦1VCMJTIFS Noti f i cationCenter.Publisher Publishers.Map Publishers.HandleEvents Publishers.Debounce Publishers.Filter Publishers.RemoveDuplicates
Publishers.FlatMap Publishers.ReceiveOn Publishers.HandleEvents

0QFSBUPS $PMMFDUJPOͱಉ͡γϯλοΫεɺ࢖͍ํͷ΋ͷ͕ଟ͍ 0QFSBUPS $PMMFDUJPO ❤

0QFSBUPS ஋ͷྲྀΕΛݟͯΈΔ 1VCMJTIFS4USJOH /FWFS lz lPOFz lz lUXPz lz lz
4VCTDSJCFS

0QFSBUPS ஋ͷྲྀΕΛݟͯΈΔ 1VCMJTIFS4USJOH /FWFS lPOFz lz lUXPz lz lz
4VCTDSJCFS

0QFSBUPS ஋ͷྲྀΕΛݟͯΈΔ 1VCMJTIFS4USJOH /FWFS lUXPz lz lz 4VCTDSJCFS

4VCTDSJCFS 0QFSBUPS ஋ͷྲྀΕΛݟͯΈΔ 1VCMJTIFS4USJOH /FWFS lUXPz lz lz

0QFSBUPST ஋ͷྲྀΕΛݟͯΈΔ 1VCMJTIFS4USJOH /FWFS lUXPz lz 4VCTDSJCFS

0QFSBUPST ஋ͷྲྀΕΛݟͯΈΔ 1VCMJTIFS4USJOH /FWFS lUXPz lz <lz lPOFz lz
ʜ> 4VCTDSJCFS

0QFSBUPS ஋ͷྲྀΕΛݟͯΈΔ 1VCMJTIFS4USJOH /FWFS 4VCTDSJCFS ̒ $PNQMFUJPO f
i OJTIFE lz lPOFz lz lUXPz lz lz

0QFSBUPS ܨ͛Ε͹ܨ͛Δ΄Ͳܕ͕ෳࡶʹͳΔ 1VCMJTIFST.BQ1VCMJTIFST%FDPEF1VCMJTIFST.BQ,FZ1BUI63-4FTTJP O%BUB5BTL1VCMJTIFS +40/%FDPEFS*OQVU "1*.PEFM +40/%FDPEFS <.PEFM> ˞ܕ໊͸ద౰Ͱ͢

0QFSBUPS FSBTF5P"OZ1VCMJTIFS "OZ1VCMJTIFS<.PEFM> &SSPS ˞ܕ໊͸ద౰Ͱ͢

0QFSBUPS 1VCMJTIFS͔Βड͚औͬͨ஋͔Β৽͍͠1VCMJTIFSΛੜ੒ 1VCMJTIFS 0QFSBUPS 1VCMJTIFS 0QFSBUPS
1VCMJTIFS 1VCMJTIFS 0QFSBUPS 0QFSBUPS 1VCMJTIFS 0QFSBUPS

ଞͷϑϨʔϜϫʔΫͱͷ࿈ܞ

͋ΒΏΔॲཧΛ1VCMJTIFSʹ 'PVOEBUJPO w /PUJ f i DBUJPODFOUFS w 5BSHFU"DUJPO w

'PVOEBUJPO $PNCJOF

63-4FTTJPO https://developer.apple.com/documentation/foundation/urlsession/processing_url_session_data_task_results_with_combine %BUB5BTL1VCMJTIFS

63-4FTTJPO https://developer.apple.com/documentation/foundation/urlsession/processing_url_session_data_task_results_with_combine ᶃ63-͔ΒσʔλΛऔಘ ᶃ ᶄ ᶅ ᶄϨεϙϯείʔυ͕ෆਖ਼ͩͱΤϥʔ ᶅ+40/Λ6TFSܕʹσίʔυ

63-4FTTJPO https://developer.apple.com/documentation/foundation/urlsession/processing_url_session_data_task_results_with_combine

63-4FTTJPO https://developer.apple.com/documentation/foundation/urlsession/processing_url_session_data_task_results_with_combine ᶃ63-͔ΒσʔλΛऔಘ ᶃ ᶄ ᶅ ᶄࣦഊͨ͠Β࠶औಘ ᶅͦΕͰ΋ࣦഊͨ͠Β୅ΘΓͷํ๏Ͱσʔλऔಘ

,70 ,FZ7BMVF0CTFSWJOH /40CKFDU,FZ7BMVF0CTFSWJOH1VCMJTIFS6*4DSPMM7JFX $(1PJOU DMBTT͔ͭ/40CKFDUͷαϒΫϥεͳΒ͹࢖༻Մೳ

/PUJGJDBUJPO$FOUFS ͲΜͳ/PUJ f i DBUJPO/BNFʹ΋ରԠ /PUJ f i DBUJPO$FOUFS1VCMJTIFS

4XJGU6* $PNCJOF

6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 6*,JU Ϋϩʔδϟ

6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 6*,JU $PNCJOF

6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* $PNCJOF

5FYU 1VCMJTIFS 6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* $PNCJOF

0CTFSWBCMF0CKFDU 0CTFSWBCMF0CKFDU 6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* $PNCJOF

5FYU 1VCMJTIFS ߋ৽ 6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* $PNCJOF

ߋ৽Λ௨஌ ௨஌ 6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* $PNCJOF

!1VCMJTIFE͕ߋ৽͞ΕΔͱߋ৽͕ඞཁͳ7JFXΛ4XJGU6*͕ࣗಈͰ࠶ඳը ߋ৽ 6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* $PNCJOF

6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 6*,JU 6*-BCFM WBSUFYU4USJOH 7JFX.PEFM WBSJE4USJOH 4UBUF 7JFX

7JFX.PEFM0CTFSWBCMF0CKFDU !1VCMJTIFEWBSJE4USJOH 6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* 5FYU WJFX.PEFMJE

7JFX.PEFM0CTFSWBCMF0CKFDU !1VCMJTIFEWBSJE4USJOH 6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* 5FYU WJFX.PEFMJE 4UBUF 7JFX

7JFX.PEFM0CTFSWBCMF0CKFDU !1VCMJTIFEWBSJE4USJOH 6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* 4XJGU6* 5FYU WJFX.PEFMJE 4UBUF 7JFX 4JOHMF4PVSDFPG5SVUI

6*ͷঢ়ଶͱදࣔͷߋ৽Λಉظ 4XJGU6* !4UBUF0CKFDUͰ0CTFSWBCMF0CKFDUΛอ࣋

͋ΒΏΔඇಉظॲཧΛ1VCMJTIFSʹ 'PVOEBUJPO w /PUJ f i DBUJPODFOUFS w 5BSHFU"DUJPO w

طଘͷ࣮૷ʹ׆༻Ͱ͖Δʁ

1BTTUISPVHI4VCKFDUͷ׆༻ ϘλϯͷλοϓΠϕϯτΛ 1VCMJTIFS͔Β௨஌͢Δ

1BTTUISPVHI4VCKFDUͷ׆༻ ϘλϯͷλοϓΠϕϯτΛ 1VCMJTIFS͔Β௨஌͢Δ ֎͔Βมߋ͞Εͳ͍Α͏ʹ ಡΈऔΓઐ༻ͳ1VCMJTIFSͷΈެ։͢Δ

$VSSFOU7BMVF4VCKFDUͷ׆༻ ॳظ஋͕ඞཁͳ৔߹

ˏ1VCMJTIFEͷ׆༻

%FMFHBUFͰड͚औͬͨ஋Λ 1VCMJTIFS͔Β௨஌͢Δ %FMFHBUF͔Βܧଓతʹ஋Λग़ྗ͢Δ

IBOEMF&WFOUT ֤λΠϛϯάͰॲཧΛ௥ՃͰ͖Δ SFDFJWF4VCTDSJQUJPO1VCMJTIFS͔Β4VCTDSJQUJPOΛड͚औͬͨ SFDFJWF0VUQVU1VCMJTIFS͔Β0VUQVUΛड͚औͬͨ SFDFJWF$PNQMFUJPO1VCMJTIFS͔Β׬ྃ௨஌Λड͚औͬͨ SFDFJWF$BODFM4VCTDSJCFS͔ΒΩϟϯηϧΛґཔ͞Εͨ SFDFJWF3FRVFTU4VCTDSJCFS͔Β%FNBOEΛड͚औͬͨ

3FTVMU1VCMJTIFS 3FTVMU%BUB &SSPS7PJE

'VUVSF 1VCMJTIFSͰ8SBQ͢Ε͹1VCMJTIFS ΛฦͤΔ 3FTVMU1VCMJTIFS

typealias Promise = (Result<Output, Failure>) -> Void https://developer.apple.com/documentation/combine/future/promise 'VUVSF͸3FTVMU Λग़ྗ͢Δ
3FTVMU1VCMJTIFS

https://developer.apple.com/documentation/combine/future/promise ஋ͷग़ྗ͸Ұ౓͚ͩ Τϥʔͷ৔߹͸Τϥʔ͚ͩ 3FTVMU1VCMJTIFS

https://developer.apple.com/documentation/combine/deferred 'VUVSF͸ ΠϯελϯεΛੜ੒ͨ͠λΠϛϯάͰ ಺෦ͷॲཧΛ࣮ߦ͢Δ 3FTVMU1VCMJTIFS

https://developer.apple.com/documentation/combine/deferred %FGFSSFEͰ࣮ߦΛ஗Ԇͤ͞Δ 3FTVMU1VCMJTIFS

,70ͷ׆༻

$VTUPN1VCMJTIFS 6*$POUSPMΠϕϯτΛ 1VCMJTIFSʹ͢Δ

$VTUPN1VCMJTIFS 1VCMJTIFS࡞੒ 4VCTDSJQUJPO࡞੒ 0QFSBUPS࡞੒ ೚ҙ

1VCMJTIFSʹม׵ͯ͠$PNCJOFͷੈք΁ $PNCJOF 1VCMJTIFS 1VCMJTIFS 1VCMJTIFS 1VCMJTIFS 1VCMJTIFS 1VCMJTIFS https://pixabay.com/ja/illustrations/%E5%9C%B0%E7%90%83-4439728/

ࠔͬͨ࣌ͷσόοάํ๏

https://pixabay.com/ja/vectors/%E3%83%81%E3%82%A7%E3%83%BC%E3%83%B3-%E5%A3%8A%E3%82%8C%E3%81%9F-%E3%83%AA%E3%83%B3%E3%82%AF-%E8%87%AA%E7%94%B1-297842/

ࠔͬͨ࣌ͷσόοάํ๏ QSJOU IBOEMF&WFOU ίϯιʔϧͰॲཧͷྲྀΕΛ֬ೝͰ͖Δ

ࠔͬͨ࣌ͷσόοάํ๏ CSFBLQPJOU0O&SSPS CSFBLQPJOU ΤϥʔͷݪҼΛελοΫΛݟͯ֬ೝͰ͖Δ

ࠔͬͨ࣌ͷσόοάํ๏ 5JNFMBOF http://timelane.tools/

ࠓ೔͝঺հͨ͜͠ͱ $PNCJOFͱ͸ʁ $PNCJOFΛ࢖͏ҙٛ ओͳΫϥεΛ஌Δ 1VCMJTIFS 4VCTDSJCFS 4VCTDSJQUJPO 4VCKFDU !1VCMJTIFE ॲཧͷྲྀΕ
࢓૊Έ Λ ஌Δ 0QFSBUPST ͱ͸ʁ طଘͷ࣮૷ʹ ૊ΈࠐΉ 4XJGU6* ϑϨʔϜϫʔΫ σόοάํ๏Λ ஌Δ

·ͩ·ͩ஌Βͳ͍͜ͱ͕͋Δ ΋ͬͱ1VCMJTIFS Λ஌Δ ΋ͬͱ0QFSBUPS Λ஌Δ ςετΛॻ͘ ಠࣗͷ1VCMJTIFSΛ ࡞੒͢Δ ΞϓϦΛ࡞੒͢Δ ศརͳϥΠϒϥϦ΍
πʔϧΛ஌Δ

΋ͬͱ1VCMJTIFS Λ஌Δ ΋ͬͱ0QFSBUPSTΛ ஌Δ ςετΛॻ͘ ಠࣗͷ1VCMJTIFSΛ ࡞੒͢Δ ΞϓϦΛ࡞੒͢Δ ศརͳϥΠϒϥϦ΍ πʔϧΛ஌Δ
·ͩ·ͩ஌Βͳ͍͜ͱ͕͋Δ 1VCMJTIFS$PNCJOF /FWFS

Ͳ͏΍ֶͬͯͿʁ

΋ͬͱ$PNCJOFʹ͍ͭͯ஌Δ w 88%$ͷηογϣϯ w ެࣜυΩϡϝϯτ w ΧϯϑΝϨϯετʔΫɺಈը w ॻ੶ɺϒϩάͳͲ

$PNCJOFΛ࢖ͬͯΈΔ w 1MBZHSPVOE΍9DPEF1SFWJFXTͰಈ͖Λ֬ೝ͢Δ w νϡʔτϦΞϧ΍ϥΠϒίʔσΟϯάಈըͷਅࣅΛ͠ ͯΈΔ ࣸܦ w ౎౓ɺެࣜϦϑΝϨϯεΛࢀর͢Δ
w ݸਓΞϓϦΛ࡞Δ

w σόοάπʔϧΛ࢖ͬͯΈΔ w ಉ͡Α͏ʹࠔ͍ͬͯΔਓ͕͍ͳ͍͔୳ͯ͠ΈΔ w ࣭໰Λͯ͠ΈΔ ࠔͬͨͱ͖͸ combinecommunity.slack.com TXJGUEFWFMPQFSTKBQBO

IUUQTHJUIVCDPNTU[O$PNCJOF4UVEZ

$PNCJOF ,FZWBMVFPCTFSWJOH 5BSHFU"DUJPO /PUJ f i DBUJPO$FOUFS $MPTVSF$BMMCBDLT %FMFHBUF ʜ
ʜ ʜ ʜ

$PNCJOF ʁ

͋Γ͕ͱ͏ ͍͟͝·ͨ͠

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