Kotlin 2.0.20 から標準ライブラリで UUID が使えるようになりました

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YUMEMI.grow DroidKaigi.onCompletion { 2024@Online } 2024.09.25 Kotlin 2.0.20 ͔Β ඪ४ϥΠϒϥϦͰ UUID ͕ ࢖͑ΔΑ͏ʹͳΓ·ͨ͠ KAWASHIMA Yoshiyuki

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఻͍͑ͨ͜ͱ • Kotlin 2.0.20 ͔Βඪ४ϥΠϒϥϦͰ UUID ͕࢖͑ΔΑ͏ʹ ͳͬͨ͜ͱ • UUID Λඪ४ϥΠϒϥϦʹ੾Γସ͑Δʹ͋ͨͬͯͷ஫ҙ఺ • ґଘؔ܎ͱͲ͏΍ͬͯ޲͖߹͍͔ͬͯ͘

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ґଘؔ܎ͱͲ͏΍ͬͯ ޲͖߹͍ͬͯ·͔͢ʁ

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ґଘؔ܎ • OS • ݴޠ • SDK • ϥΠϒϥϦ

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ґଘؔ܎ͱͷ޲͖߹͍ํ • Dependabot Ͱि࣍Ͱߋ৽ • େ͖ͳมߋ͕͋ͬͨ࣌ʹ·ͱΊͯߋ৽ • ͳΔ΂͘ߋ৽͠ͳ͍ • ͦͷଞʢ͓͢͢Ίͷߋ৽ϑϩʔ΍πʔϧ͕͋Ε͹ੋඇ νϟοτཝʹʣ

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dependabot ͔Βͷ PR • dependabot Ͱि࣍Ͱߋ৽ • Kotlin Multiplatform ΞϓϦέʔγϣϯ։ൃ • kotlinx-serialization-json 1.7.1 -> 1.7.2 https://github.com/Kotlin/kotlinx.serialization/releases/tag/v1.7.2

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Ϛʔδͨ͠ΒΫϥογϡͨ͠ • Ϗϧυ͸ύε͢Δ͕ىಈͨ͠௚ޙʹΫϥογϡͨ͠ • kotlin.native.internal.IrLinkageError: Reference to class 'Uuid' can not be evaluated: No class found for symbol ‘kotlin.uuid/Uuid|null[0]'

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kotlin.uuid/UUID?

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ڞ௨ͷ Kotlin ඪ४ϥΠϒϥϦʹ͓͚Δ UUID ͷ αϙʔτ Kotlin 2.0.20 ͔Βಋೖ͞Ε·ͨ͠ https://kotlinlang.org/docs/whatsnew2020.html#standard-library

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ϦϦʔεϊʔτΛվΊͯݟΔͱ Kotlin 2.0.20 ͕σϑΥϧτʹͳͬͯͨ https://github.com/Kotlin/kotlinx.serialization/releases/tag/v1.7.2

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͞ΒʹϦϦʔεϊʔτΛεΫϩʔϧ͢Δͱɺ kotlin.uuid.Uuid ʹରԠͯͨ͠ https://github.com/Kotlin/kotlinx.serialization/releases/tag/v1.7.2

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͜Ε·ͰͲ͏͍͔ͯͨ͠ • Java ͷ UUID Ϋϥε͔͠ͳ͔ͬͨ • JVM ϓϥοτϑΥʔϜͰ͋Ε͹໰୊ͳ͍ • Kotlin Multiplatform Ͱ͸ Java ͷϥΠϒϥϦΛར༻Ͱ͖ͳ ͍ • Kotlin Multiplatform ରԠͷαʔυύʔςΟͷ UUID ϥΠϒ ϥϦΛར༻͍ͯͨ͠

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Ϋϥογϡαϯϓϧίʔυ • https://github.com/ykws/uuid- runtime-exception-sample

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Json.encodeToString Ͱ αʔυύʔςΟͷ Uuid Λ Serialize ͢Δ෦෼ͰΫϥογϡ͠·͢

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ΫϥογϡͷݪҼ • kotlinx-serialization-json 1.7.2 Ҏ߱ɺඪ४ϥΠϒϥϦͷ kotlin.uuid ʹґଘ͍ͯ͠Δ • αʔυύʔςΟͷ uuid Λ࢖༻͍ͯͨͨ͠Ίɺ kotlinx- serialization-json ଆͰ kotlin.uuid/Uuid ͷΫϥεղܾ͕Ͱ ͖ͳ͔ͬͨ

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ճආ͢Δʹ͸ • kotlinx-serialization-json 1.7.1 Λ࢖༻͠ଓ͚Δ • αʔυύʔςΟͷ UUID Λඪ४ϥΠϒϥϦʹ੾Γସ͑Δ

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ؒ઀తʹར༻͍ͯ͠Δέʔε • KableʢKotlin Asynchronous Bluetooth Low Energy) Ͱ͸ αʔυύʔςΟͷ UUID ϥΠϒϥϦʹґଘ͍ͯ͠Δ https://github.com/JuulLabs/kable • 0.36.0 ͷϚΠϧετʔϯͰରԠ༧ఆ https://github.com/ JuulLabs/kable/pull/758

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ରԠ͍͚ͨ͠ͲͰ͖ͳ͍ • SKIE 0.8.4 ͸·ͩ Kotlin 2.0.20 ʹରԠ͍ͯ͠ͳ͍ • 0.9.0 ͰରԠ༧ఆ https://github.com/touchlab/SKIE/ issues/95 • ٸ͙ͳΒ 0.9.0-RC.3 Ҏ߱͸࣮੷͋Γʢcurcuit ͕࠾༻ͯ͠ ͍Δʣ https://github.com/slackhq/circuit/pull/1605

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·ͱΊ • UUID ͸޿͘ීٴ͍ͯ͠ΔͨΊɺΞϓϦέʔγϣϯͰ௚઀ తʹɺ·ͨ͸ؒ઀తʹར༻͞ΕΔ • ඪ४ϥΠϒϥϦ΁ͷ੾Γସ͑͸ଞͷґଘؔ܎ͱͷ݉Ͷ߹ ͍Λߟྀͯ͠ܭը͕ඞཁ • ඪ४ϥΠϒϥϦ΁ͷ੾Γସ͕͑೉͍͠৔߹΋͋ͬͯɺґଘ ͢ΔϥΠϒϥϦ͕ߋ৽͞Εͨ৔߹ɺ༧ظͤͣ੾Γସ͕͑ ඞཁʹͳΔՄೳੑ΋͋Δ

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UUID ͸·ͩ Experimental ಋೖͷλΠϛϯά͸৻ॏʹ൑அ͢Δඞཁ͕͋Γͭͭ΋ଞͷґଘؔ܎Ͱ ੾Γସ͑Λڧ੍͞ΕΔՄೳੑ΋͋ΓґଘϥΠϒϥϦͷಈ޲ʹ஫ࢹ͕ඞཁ https://kotlinlang.org/docs/whatsnew2020.html#standard-library

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ґଘؔ܎ͱͲ͏΍ͬͯ ޲͖߹͍͖ͬͯ·͔͢ʁ

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