15 minutes recipe of RxSwift

3Y4XJGUษڧձ !HPNJ@OJOHFO NJOVUFTSFDJQFPG3Y4XJGU 1"350CTFSWFS0CTFSWBCMF#FIBWJPS4VCKFDU

ࣗݾ঺հ ๭ϥϏοτϋ΢εࣾͰಇࣾ͘ச৽೥ੜ ɾ+BWB 4FSWMFUɾ಺੡'8 ɾ4DBMB 1MBZ όοΫΤϯυ։ൃ ɾJ044XJGUΞϓϦ৽ن։ൃɹͳͲ
ɾ޷͖ͳݴޠ͸+BWB 4DBMB $ʢ͓࢓ࣄ͓଴ͪͯ͠·͢ʣ ɾ޷͖ͳ࡞඼͸͝஫จ͸͏͗͞Ͱ͔͢ ɾJ04։ൃܦݧ͸·ͩ൒೥΄ͲͳͷͰجຊతʹૉਓͰ͢ 🐰͕࣌ؒͳ͍ͷͰࣗݾ঺հ͸ׂѪ͠·͢🐰 !HPNJ@OJOHFO

ࠓ೔࿩͢಺༰ 3Y4XJGUͷ0CTFSWFSؔ࿈جຊ෦඼Λ෼Ͱ࡞ΔϨγϐʂ ෼ͰऴΘΔͱ͸ݴ͍ͬͯͳ͍   0CTFSWFSύλʔϯͷ෮शʢ෼ʣ ͜Ε͕Θ͔Βͳ͍ͱҙຯෆ໌ͳ࿩Λ͢ΔͷͰɺ௒଎Ͱ͓͞Β͍͢Δ 0CTFSWFS
0CTFSWBCMF*'ͷఆٛʢ෼ʣ 4XJGUͷݴޠ࢓༷ͷ͍ͤͰɺͪΐͬͱ໘౗ͳ࣮૷Λ͢Δඞཁ͕͋Δ #FIBWJPS4VCKFDUͷ࣮૷ʢ෼ʣ 5ܕͷঢ়ଶ஋Λ؍ଌͰ͖Δ؆୯ͳ0CTFSWBCMF۩৅ΫϥεΛ࡞੒͢Δ ޙ೔ɺผͷػձ͕͋Ε͹ɺίϯϏωʔλ΍4DIFEVMFSͷ࿩΋͍ͨ͠ ʢ෼͡Όશͯͷઆ໌Λ͢Δͷ͸ແཧʣ

஫ҙࣄ߲ •  ͜Ε͔Β࿩͢಺༰Λཧղ͠ͳͯ͘΋3Y4XJGU͸े෼࢖ ͑ΔϥΠϒϥϦͰ͢ʢΑ͘෼͔ΒΜͱࢥͬͨਓ͸ฉ͖ͳ͕ͯ͠΄͍͠ʣ •  ·ͩ3YܥͷϥΠϒϥϦΛ࢖ͬͨ͜ͱ͕ͳ͍ํ͸ɺ·ͣ ϥΠϒϥϦΛ࢖ͬͯΈ͍ͯͩ͘͞ ·ͣ6*#VUUPOͷΠϕϯτϋϯυϦϯάΛ3YͰߦ͏ͱ͜Ζ͔Β࢝ΊͯΈΑ͏ʂ
•  ͓࿩ͷதͰొ৔͢Δ࣮૷͸3Y4XJGUͷ΋ͷͰ͋Γɺଞ ݴޠͷ3YϥΠϒϥϦͱ͸࣮૷͕ҟͳΔ৔߹͕͋Γ·͢

  0CTFSWFSύλʔϯͷ෮श (P'ͷσβύλຊΛಡΜͰ͍ͩ͘͞

໰୊ ࣍ͷΑ͏ͳ໰୊Λղܾ͢ΔͨΊʹ͸Ͳ͏ͨ͠ΒΑ͍Ͱ͠ΐ͏͔ʁ "ʹมԽ͕ى͖ͨΒɺ#ʹ఻͍͑ͨ

໰୊ ࣍ͷΑ͏ͳ໰୊Λղܾ͢ΔͨΊʹ͸Ͳ͏ͨ͠ΒΑ͍Ͱ͠ΐ͏͔ʁ "ʹมԽ͕ى͖ͨΒɺ#ʹ఻͍͑ͨ ݱ࣮ੈքͰ΋͜͏͍͏έʔε͸͋Δ͸ͣ ɾ༧ఆ͕มΘͬͨͷͰʢঢ়ଶભҠʣ͓ళͷ༧໿ΛऔΓফ͢ʢ௨஌ʣ ɾ஗ࠁͦ͠͏ʹͳͬͨΒʢঢ়ଶભҠʣ্࢘ʹ࿈བྷ͢Δʢ௨஌ʣ
͜ΕΒΛ࣮ݱ͢ΔͨΊʹ͸ɺ૬खͷ࿈བྷઌΛ஌͍ͬͯͳ͍ͱ͍͚ͳ͍ ϓϩάϥϛϯάʹ͓͍ͯ͸ɺ૬खͷࢀরΛอ͍࣋ͯ͠ͳ͍ͱ͍͚ͳ͍

໰୊ͷղ౴ ࣍ͷΑ͏ͳ໰୊Λղܾ͢ΔͨΊʹ͸Ͳ͏ͨ͠ΒΑ͍Ͱ͠ΐ͏͔ʁ "ʹมԽ͕ى͖ͨΒɺ#ʹ఻͍͑ͨ
"͕#ͷΠϯελϯεΛอ࣋͠ɺ#ʹมߋΛ఻͑Δ ʢ͜ͷߏ଄Ͱ໰୊ΛͪΌΜͱղܾͰ͖͍ͯΔͷͰਖ਼͍͠ʣ

໰୊ ࣍ͷΑ͏ͳ໰୊Λղܾ͢ΔͨΊʹ͸Ͳ͏ͨ͠ΒΑ͍Ͱ͠ΐ͏͔ʁ "ʹมԽ͕ى͖ͨΒɺ#ʹ఻͍͑ͨ ͨͩ͠ɺҟͳΔ*'Λ࣋ͬͨ௨஌ઌ͕૿͑Δ͜ͱ͕༧૝͞Ε͍ͯΔ

໰୊ ࣍ͷΑ͏ͳ໰୊Λղܾ͢ΔͨΊʹ͸Ͳ͏ͨ͠ΒΑ͍Ͱ͠ΐ͏͔ʁ "ʹมԽ͕ى͖ͨΒɺ#ʹ఻͍͑ͨ ͨͩ͠ɺҟͳΔ*'Λ࣋ͬͨ௨஌ઌ͕૿͑Δ͜ͱ͕༧૝͞Ε͍ͯΔ ݱ࣮ੈքͰྫ͑Δͱ ɾ"͸ɺ# $
%ͱ଴ͪ߹ΘͤΛ͍ͯ͠Δ ɾ଴ͪ߹Θͤ৔ॴΛมߋ͍ͨ͠ͷͰɺมߋΛ஌ΒͤΔඞཁ͕͋Δ ɾ#͸UXJUUFS $͸ϝʔϧ %͸-*/&Ͱ΍ΓͱΓΛ͢Δඞཁ͕͋Δ "͸ͦΕͧΕͷ*'Λ஌͍ͬͯͳ͍ͱ͍͚ͳ͍ͷͰେม

໰୊ ࣍ͷΑ͏ͳ໰୊Λղܾ͢ΔͨΊʹ͸Ͳ͏ͨ͠ΒΑ͍Ͱ͠ΐ͏͔ʁ "ʹมԽ͕ى͖ͨΒɺ#ʹ఻͍͑ͨ ͨͩ͠ɺҟͳΔ*'Λ࣋ͬͨ௨஌ઌ͕૿͑Δ͜ͱ͕༧૝͞Ε͍ͯΔ ઌ΄ͲͷղܾࡦͰ͸Կ͕ϚζΠͷ͔ʁ ɾ௨஌ઌ͕૿ݮ͢Δͨͼʹ"ͷ಺෦Λมߋ͢Δඞཁ͕͋Δ ɾ௨஌ઌͷ*'ͷมߋʹΑΓ"ͷ಺෦Λมߋ͢Δඞཁ͕͋Δ
͜ͷ఺͸ɺ௨஌ݩ͕௨஌ઌͷΦϒδΣΫτͷৄࡉΛ ஌͍ͬͯΔ͜ͱʹΑͬͯੜ͡Δ໰୊

0CTFSWFSύλʔϯ ௨஌ઌʢ؍ଌऀ0CTFSWFSʣ͸ɺ ௨஌Λड͚͚ͭΔͨΊͷϝιουʢVQEBUFʣΛ͍࣋ͬͯΕ͹ྑͦ͞͏

QVMMܕ0CTFSWFSύλʔϯ ௨஌ݩ ؍ଌՄೳͳ஋0CTFSWBCMF ͸ɺ ɾ0CTFSWFS΁ͷ௨஌Λ։࢝͢ΔͨΊͷϝιουʢBUUBDIʣ ɾ0CTFSWFS΁ͷ௨஌Λऴྃ͢ΔͨΊͷϝιουʢEFUBDIʣ ɾอ࣋͢Δ0CTFSWFSͨͪʹ௨஌ΛૹΔϝιουʢOPUJGZʣ Λ͍࣋ͬͯΕ͹ྑͦ͞͏

QVMMܕ0CTFSWFSύλʔϯ ͜ͷߏ଄ΛQVMMܕ0CTFSWFSύλʔϯͱ͍͏ 👉؍ଌऀ͕0CTFSWBCMFʹ஋ΛऔΓʹߦ͔ͳ͚Ε͹ͳΒͳ͍ 👉ͦͷ͔ΘΓ*'͸୯७ʹͳΔ

QVTIܕ0CTFSWFSύλʔϯ ͜ͷߏ଄ΛQVTIܕ0CTFSWFSύλʔϯͱ͍͏ 👉0CTFSWBCMF͕ߋ৽͞Εͨ஋͝ͱ0CTFSWFS΁௨஌͢Δ

0CTFSWFS 0CTFSWBCMFͷఆٛ 4XJGUͷݴޠ࢓༷ͷ͍ͤͰͭΒ͍͜ͱΛ͢Δඞཁ͕͋Γ·͢

جຊతͳΠϯλʔϑΣʔε جຊߏ଄͸QVTIܕ0CTFSWFSύλʔϯͱಉ͡ 👉ͨͩ͠ɺ୯ͳΔ஋Ͱ͸ͳ͘Πϕϯτ͕ߪಡͷର৅ʹͳΔ 👉Τϥʔ΍׬ྃΠϕϯτ͕ೖΔ͜ͱʹΑΓදݱྗ্͕͕Δ

&WFOUͷ࣮૷ ɾ࣍ͷঢ়ଶ஋Λද͢/FYU ɾΤϥʔ͕ͨͨ͠Ί௨஌Λऴྃ͢Δ&SSPS ɾঢ়ଶભҠ͕ऴ୺ʹୡͨ͜͠ͱΛද͢$PNQMFUFE
👉&SSPSPS$PNQMFUFEͰΠϕϯτετϦʔϜ͕ด͡Δ

0CTFSWFS0CTFSWBCMF5ZQF ɾ4XJGUͷQSPUPDPM͸HFOFSJDUZQFQBSBNFUFSΛ࣋ͯͳ͍ ɾͭ·ΓQSPUPDPM0CTFSWFS&\^తͳ΋ͷ͕ఆٛͰ͖ͳ͍

0CTFSWFS0CTFSWBCMF5ZQF ɾ4XJGUͷQSPUPDPM͸HFOFSJDUZQFQBSBNFUFSΛ࣋ͯͳ͍ ɾQSPUPDPMXJUIBTTPDJBUFEUZQF BCTUSBDUDMBTTͰରԠ
ͳΜͰ͜ΜͳΫιΊΜͲ͍͘͜͞ͱΛ͍ͯ͠Δͷ͔

0CTFSWFS0CTFSWBCMF5ZQF ɾ0CTFSWFSʹ΋0CTFSWBCMFʹ΋ͳΕΔ4VCKFDU΁ͷରԠ ɾΫϥεͷଟॏܧঝ͕Ͱ͖ͳ͍ͨΊʹQSPUPDPMΛ੾Δඞཁ͕͋Δ

ɾ0CTFSWFS5ZQF0CTFSWBCMF5ZQF͸͜ͷͨΊʹඞཁ ɾ·ͣ͸ɺ👆͜ͷͭΛఆ͍͖ٛͯ͠·͠ΐ͏ 0CTFSWFS0CTFSWBCMF5ZQF

0CTFSWFS0CTFSWBCMF5ZQF

ɾ"OZ0CTFSWFS0CTFSWBCMFΛ࣮૷͢Δ ɾBTTPDJBUFEUZQFΛHFOFSJDUZQFQBSBNFUFS΁ "OZ0CTFSWFS0CTFSWBCMF

ɾUZQFBMJBT&&MFNFOUͱPOͷҾ਺ܕ੍໿͕ϙΠϯτ ɾ؍ଌऀ͸ɺ؍ଌͨ͠ΠϕϯτΛॲཧ͢Ε͹0,ͳͷͰ࣮૷͸୯७ "OZ0CTFSWFS&MFNFOU

ɾUZQFBMJBTͱTVCTDSJCFͷҾ਺ܕ੍໿͕ϙΠϯτ ɾຊདྷͩͬͨΒBCTUSBDUDMBTTʹ͢Δ΂͖ͱ͜Ζ 0CTFSWBCMF&MFNFOU

#FIBWJPS4VCKFDUͷ࣮૷ ஍ຯͳ࣮૷Λ୶ʑͱߦ͏΋ͷͰ͢ɻա౓ͳظ଴͸͠ͳ͍Ͱ͍ͩ͘͞ɻ

#FIBWJPS4VCKFDU&ͱ͸Կ͔ʁ ɾ&ܕͷ஋Λঢ়ଶͱͯ࣋ͭ͠0CTFSWBCMFͳΦϒδΣΫτͷͻͱͭ ɾTVCTDSJCF PCTFSWFS ͢Δͱݱࡏͷঢ়ଶΛऔಘͰ͖Δͱͱ΋ʹ ɹม਺ͷத਎͕มԽͨ͠ͱ͖ͦͷมߋ௨஌Λड͚Δ͜ͱ͕Ͱ͖Δ

#FIBWJPS4VCKFDU&ͷ࣮૷ ɾ౔୆͸&ܕͷ஋ͷϥούʔΫϥε ɾ0CTFSWBCMFͳͷͰTVCTDSJCFΛ࣮૷͢Δඞཁ͕͋Δ

#FIBWJPS4VCKFDU&ͷ࣮૷ ɾTVCTDSJCFͰ͸PCTFSWFSΛίϨΫγϣϯ΁ಥͬࠐΉ ɹʢPCTFSWFSߪಡऀ௨஌ઌΛPCTFSWBCMF͕อ࣋͢Δʣ

#FIBWJPS4VCKFDU&ͷ࣮૷ ɾಉ࣌ʹߪಡΛղআ͢ΔͨΊͷΦϒδΣΫτ%JTQPTBCMFΛൃߦ ʢ4VCTDSJQUJPO%JTQPTBCMFʹVOTVCTDSJCFͷൃՐΛҕৡʣ

#FIBWJPS4VCKFDU&ͷ࣮૷ ɾಉ࣌ʹߪಡΛղআ͢ΔͨΊͷΦϒδΣΫτ%JTQPTBCMFΛൃߦ ʢ4VCTDSJQUJPO%JTQPTBCMFʹVOTVCTDSJCFͷൃՐΛҕৡʣ EJTQPTF ͰVOTVCTDSJCFΛൃՐͤ͞ΔΑ͏ͳ%JTQPTBCMFͷ࣮૷͕ඞཁ

VOTBGF"EESFTT0G "OZ0CKFDU ɾΠϯελϯε͸ϝϞϦΛ֬อ͢Δʹ͋ΔछͷJEͷ໾ׂΛ࣋ͭ ɾ4XJGUVOTBGF"EESFTT0G͸ͦͷ൪஍ΛऔಘͰ͖Δ ɾ3Y4XJGUͰ͸͜ͷϋογϡ஋Λ༻͍ͨΩʔʢ#BH,FZʣͱ ɹίϨΫγϣϯʢ#BHʣΛࣗલͰ࣮૷͍ͯ͠Δ ɹʢεϥΠυͰ͸؆୯ͷͨΊɺ഑ྻΛ࢖ͬͨࡶͳ࣮૷ʹͯ͋͠Δʣ
DG 3Y4XJGU%BUB4USVDUVSFT#BHTXJGU

4VCTDSJQUJPO%JTQPTBCMFͷ࣮૷ ɾ4VCTDSJQUJPO%JTQPTBCMFͷ࣮૷ʹऔΓֻ͔Δ EJTQPTF ͰVOTVCTDSJCFΛൃՐͤ͞ΔΑ͏ͳ%JTQPTBCMFͷ࣮૷͕ඞཁ

4VCTDSJQUJPO%JTQPTBCMFͷ࣮૷ ɾ#FIBWJPS4VCKFDUͷऑࢀরͱPCTFSWFSΛಛఆ͢ΔΩʔΛอ࣋ ɾEJTQPTFͰ#FIBWJPS4VCKFDU಺ͷVOTVCTDSJCFΛൃՐ

0CTFSWFS5ZQFϓϩτίϧ΁ͷద߹ ɾ͜ͷ··ͩͱ#FIBWJPS4VCKFDUΛঢ়ଶભҠͤ͞Δํ๏͕ͳ͍ ɾPO &WFOU Ͱঢ়ଶભҠΛͤ͞Δ΂͘0CTFSWFS5ZQFΛ࣮૷

੒Ռ෺ΛͱΓ͋͑ͣ࢖ͬͯΈΔ ɾҎԼͷΑ͏ͳײ͡Ͱ0CTFSWFSύλʔϯΛͱΓ࣮͋͑ͣݱͰ͖Δ

੒Ռ෺ͷ໰୊఺ ɾεϨουηʔϑͰ͸ͳ͍ 👉/43FDVSTJWF-PDLΛ࢖͏͜ͱͰղܾ͢Δ ɾ&SSPS$PNQMFUFEͰΠϕϯτετϦʔϜ͕ด͡ͳ͍ 👉#FIBWJPS4VCKFDUʹରͯ͠EJTQPTFETUPQQFE&WFOU ɹϓϩύςΟΛ௥Ճͯ͠ɺద੾ͳॲཧΛ࣮૷͢Δ ɾ4VCTDSJQUJPO%JTQPTBCMF͕#FIBWJPS4VCKFDUʹରͯ͠ ɹϋʔυίʔυ͞Ε͍ͯΔ
👉VOTVCTDSJCFΛ࣋ͭϓϩτίϧΛ੾Γɺந৅΁ґଘͤ͞Δ ɹʢ3Y4XJGUͷ4ZODISPOJ[FE6OTVCTDSJCF5ZQFʹ૬౰ʣ

εϨουηʔϑʹ͢ΔͨΊʹ ɾεϨουηʔϑʹ͢ΔͨΊʹ/43FDVSTJWF-PDLΛ༻͍Δ ɾ͋ΔεϨου͕MPDL͢ΔͱಉҰεϨουҎ֎͔ΒͷΞΫηεΛ ɹ଴ͨͤͯ͘ΕΔػೳΛ࣋ͭ ɾΞτϛοΫʹ͍ͨ͠෦෼ΛMPDL VOMPDLͰғΉ͚ͩͷ਌੾ઃܭ

εϨουηʔϑʹ͢ΔͨΊʹ ɾεϨουηʔϑʹ͢ΔͨΊʹ/43FDVSTJWF-PDLΛ༻͍Δ ɾ͋ΔεϨου͕MPDL͢ΔͱಉҰεϨουҎ֎͔ΒͷΞΫηεΛ ɹ଴ͨͤͯ͘ΕΔػೳΛ࣋ͭ ɾΞτϛοΫʹ͍ͨ͠෦෼ΛMPDL VOMPDLͰғΉ͚ͩͷ਌੾ઃܭ
3Y4XJGUͰ͸EFGFSΛ࢖্ͬͨهͷΑ͏ͳ࣮૷͕໨ʹͭ͘ ʢVOMPDL๨Ε๷ࢭͷͨΊͩͱࢥΘΕΔʣ

εϨουηʔϑʹ͢ΔͨΊʹ ɾ಺෦ঢ়ଶΛࢀরɾมߋ͢ΔՕॴʹMPDLΛࠩ͠ࠐΉ

·ͱΊ ɾ0CTFSWFS 0CTFSWBCMFͷ*'͸QVTIܕ0CTFSWFS ɹύλʔϯ͔Βࣗવʹಋ͘͜ͱ͕Ͱ͖Δ ɾQVTI͢Δ஋ʹOFYU FSSPS DPNQMFUFEͱ͍͏ҙຯ෇͚Λ ɹ͢Δ͜ͱʹΑͬͯػೳੑΛ޲্͍ͤͯ͞Δͷ͕ಛ௃త
ɾߪಡղআͷ࢓૊ΈΛ%JTQPTBCMFʹҕৡ͍ͯ͠Δͷ͕ಛ௃త ͳ͓ɺࠓ೔஻ͬͨ͜ͱͱεϥΠυͷ಺༰͸͔ͳΓઆ໌ෆ଍ͳͷͰɺڵຯ Λ࣋ͨΕͨํ͸ҎԼͷهࣄΛ͝ཡ͍͚ͨͩΔͱ޾͍Ͱ͢ IUUQRJJUBDPNHPNJ@OJOHFOJUFNTEDBBCFBBFC

ͦͷଞ3Y4XJGUʹؔ͢Δ׆ಈ 3Y4XJGUؔ࿈ͷهࣄ౳ɺଟ਺ॻ͍ͯ·͢ͷͰΑΖ͓͘͠ئ͍͠·͢🙏 <2JJUB>J04ΞϓϦ։ൃࣄྫͷ͝঺հ IUUQRJJUBDPNHPNJ@OJOHFOJUFNTCCBCE <$>هࣄ͝஫จ͸3YͰ͔͢ /"/"," *OTJEF13&44WPMʢୈ̓։ൃηΫγϣϯʣ
IUUQTTJUFTHPPHMFDPNTJUFEBJTFD <χίφϨ>3Y4XJGUΛ༻͍ͨΞϓϦ։ൃͷ࣮ફ IUUQOJDPOBSFOJDPWJEFPKQXBUDILO ͦͷଞɺ3Y4XJGUؔ࿈ͷωλ͸ͨ͘͞Μ͋ΔͷͰɺԿ͔ػձ͕͋ͬͨΒݺΜͰ͍ͩ͘͞

15 minutes recipe of RxSwift

15 minutes recipe of RxSwift

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