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React + Valtio
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@YutamaKotaro
October 03, 2021
Programming
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React + Valtio
At RN LT
@YutamaKotaro
October 03, 2021
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Transcript
3FBDU 7BMUJP !:VUBNB,PUBSP
7VFͷੈքʹߦ͖ͬͯ·ͨ͠ʂ ͍͍ͳ͊ɾɾͱࢥ͍ͭͭɺ3FBDUͷྑ͞Λ࠶ೝ ࣝ͢ΔʹࢸΓɺWBMUJPಋೖΛܾΊͨͷͰฉ͍ͯ͘ ͍ͩ͞ɻ
7VFQPJOUGSPNSFBDUVTFS ͱʹ͔͘؆ܿʹ͔͚Δ͕ඇৗʹΑ͍ɻ 3FBDU 7VF
7VFQPJOUGSPNSFBDUVTFS ͱʹ͔͘؆ܿʹ͔͚Δ͕ඇৗʹΑ͍ɻ 3FBDU 7VF
7VFQPJOUGSPNSFBDUVTFS ͱʹ͔͘؆ܿʹ͔͚Δ͕ඇৗʹΑ͍ɻ 3FBDU 7VF
7VFQPJOUGSPNSFBDUVTFS + 5 49͕࠷ߴͳΜͰɾɾɾɻͱ͍͏ҙݟ͕ࢄݟ 7VF 1SPQTͰϋϯυ ϥΛ͢ܗࣜɻ
7VFQPJOUGSPNSFBDUVTFS ݺͼग़͠ݩͰఆٛ Մೳɻ + 5 49͕࠷ߴͳΜͰɾɾɾɻͱ͍͏ҙݟ͕ࢄݟ
7VFQPJOUGSPNSFBDUVTFS ͱࢸͬͯී௨ʹ͏͜ͱ͕Ͱ͖·͢ɻ ͦͷଞɺ$VTUPNIPPLTDPOUFYU"1* ૬ͳͷ͋ͬͨΓɾɾɾɾ ͱΓΘ͚ศརͩͬͨͷ͕ɾɾɾ
3FBDUJWF ͱΓΘ͚ศརʹײͨ͡ͷSFBDUJWF ͱΓΘ͚ศརʹײͨ͡ͷ SFBDUJWF
7VFQPJOUGSPNSFBDUVTFS ඇৗʹ༏Εͨػೳ͕ͨ͘͞Μ͋ΔΜͰ͕͢ɾɾ Ұ෦ͷػೳ+49Ͱ͑ͳ͍ͷͰɺ݁ہ 4'$ʢ4JOHMF'JMF$PNQPOFOU͍ΘΏΔ7VFه ๏ ʹؼண͠·ͨ͠ʢɻɻɻҰ෦͚ͩKTYΛ͏ ͷ͋Γͩͱࢥ͍·͢ɾɾʣɻ
ͬͺ+49͍͍ͬ͢ΑͶ Ͱͬͺ+49͍͍ͬ͢ΑͶɻγϯϓϧͰہॴతͳ ར༻Ͱ͖ɺίϯϙʔωϯτ࡞ͷқ͕ͱͯ Լ͕Γ·͢ɻ ͦͯ͠ɺԿΑΓࢥͬͨͷɺ ɹɹʰ؆୯ʹॻ͚Δʱʰγϯϓϧʹॻ͚Δʱ ɹɹɹɹɹɹɹɹɹɹɹɹɹΛཱ͍྆ͨ͠ͱʂʂ
͜ΕΛ+49ΰϦΰϦڥͰ͔͖͍ͨ +49ΰϦΰϦڥɺͭ·Γ3FBDUͳΜͰ͕͢ɾɾ $POUFYU"1*Ͱશମཧ͢ΔͷͪΐͬͱΊΜͲ͘ ͍͞͠ɻɻɻ 3FEVY3FDPJMΑΓͬͱ͓खܰʹࣗ༝ʹָ͠ ͍ͨɻɻɻ
ӡ໋ͷग़ձ͍ʂ ୳ͯ͠Έͯͳ͔ͬͨΒ࡞Ζ͏ͱࢥͬͯͨΒɾɾɾ 7BMUJPʹग़ձ͍·ͨ͠ʂʂ ͱͯૉΒ͘͠ײँײܹͰͨ͠ɻ ͱ͍͏͜ͱͰ7BMUJPհɻ ࡞ऀ!EBJTI͞Μ
7BMUJP 1SPYZΛ׆༻ͨ͠ɺͱʹ͔͘ ɹɹγϯϓϧͳεςʔτϚωδϝϯτϥΠϒϥϦͰ͢ʂ 1SPYZΛ͍ͬͯΔͱ͍͏͜ͱɻɻɻɻ ɹɹɹɹɹͦ͏ɺϦΞΫςΟϒͳॻ͖ํ͕Ͱ͖ΔͷͰ͢ɻ
7BMUJP ͜ΕʹΑͬͯɺ͋ͱϦ ΞΫςΟϒʹίʔυΛॻ ͚ͩ͘ɾɾʂʂ ͍͜͠ͱԿͳ͓͘ ͖ʹࣗ༝ʹίʔυΛॻ ͚ͩ͘ɻ
7BMUJPGPS"DUJPO "DUJPO૬ͷͷ ؔΛఆٛ͢Δ͚ͩ TUBUFͷΞΫηε ͳͲఆٛͨ͠ͷ ΛಡΈࠐΉ͚ͩͰ 0,ɻ
7BMUJPTVCTDSJCF Α3FBDUʹͱͲ·Β ͳ͍Ͱ͕͢ɾɾɾ αϒεΫϥΠϒ؆୯ʹ Ͱ͖·͢ɻ
7BMUJPDPNQVUFE1SPQFSUJFT ࢉज़ϓϩύςΟͷఆٛ Մೳɻ ʢ"DUJPOΛTUBUFʹؚ ΊΔ͜ͱՄೳͰ͢ʣ
7BMUJPBSSBZ ࢸͬͯී௨ʹ"SSBZͷૢ࡞ ߦ͑ΔͷͰɺؾʹ͢Δ͜ ͱຊʹগͳ͍ɻ ෦ͰύϑΥʔϚϯε;͘ ΊͪΌΜͱͨ͠ൺֱΛߦͬ ͯ͘Ε͍ͯΔɻ
7BMUJPBSHVNFOUFEVTF4UBUF VTF4UBUFΛ֦ு͢ Δ͜ͱͰ͖ͨʂ ͓΄ʔʂʂ ʢVTF3FBDUJWFউख ʹ࡞ͬͨͷͰ͢ʣ
·ͱΊ γϯϓϧʹॻ͚Δʴ؆ૉʹॻ͚Δɹ 3FBDUͷྑ͞Λ7VFͷྑ͞Λମײ͠ɺ ͱ͍͏ਤࣜΛٻΊͨɻ݁Ռ7BMUJPʹग़ձͬͨɻ ݁Ռɺ࠷ߴͰͨ͠ʂʂɹ
ݒ೦ ͱ͍͑ɾɾɾ γϯϓϧ͗͢ΔͨΊɺνʔϜ։ൃʹ͓͍ͯ TUBUFΛॻ͖͑Δ TUBUFΫϥοΧʔ ॻ͖ํ͕·ͱ·Βͳ͍ʢDPEFεϓϨομʔʣ ͱ͍ͬͨײ͡ʹXBZʹΕͳ͍ͷͰɺ͔ͬ͠Γͱํ
Λߟ͑ڞ༗͍ͯ͘͠ඞཁ͕͋Δؾ͕͢Δɻ
ͱ͍͑ɺ͕͔ͩ͠͠ ࣗ༝͕ݶΓͳ͘ߴ͍ͨΊ ࣗͰ࡞Γ্ָ͍͛ͯ͘͠Έ ੈք؍ͷ࣮ݱ ΧελϚΠζੑͷ͔ͨ͞ ͱ͍ͬͨϚΠϯΫϥϑτతͳָ͠͞ਵҰɻ
༨ஊ 7BOJMB+4Ͱಈ͘͜ͱҰͭͷྑ͔͞ QSPYZTUBUFΛ'& #&Ͱ ɹɹɹɹɹڞ༗͢ΔͨΊʹ͏ͷ͋Γ͔ɻɻɻ
݁ʢݸਓతͳײʣ ͜Εɺͱ͍͍ͯͷͩɻ εΩϧϨϕϧͷ෯͍νʔϜͩͱΉ͔ͳ͍͔ ౷੍ͷͱΕͨνʔϜ͔ݸਓͩͱ͘ ͱʹ͔͘γϯϓϧͳͷͰϙςϯγϟϧߴ͍͕ɺ ͦΕΛҾ͖ग़ͤΔͷ͔։ൃऀ࣍ୈɻ