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Context Receiversに思いを馳せる / Context Receivers
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uzzu
October 05, 2022
Technology
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490
Context Receiversに思いを馳せる / Context Receivers
DroidKaigi2022 Dialogs - 2022/10/05 14:20-14:45
https://droidkaigi.jp/2022/timetable/363729
uzzu
October 05, 2022
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Transcript
Context Receiversʹ ࢥ͍ΛͤΔ uzzu @ 2022/10/05 DroidKaigi 2022 DAY.01
Cluster, Inc. All Rights Reserved. 2 ҙ 2022/09࣌Ͱͷ ใΛݩʹൃද͓ͯ͠Γ·͢ ࢥ͍ΛͤΔ༰ͳͷͰओ؍ؚ·Ε͓ͯΓ·͢
Context Receiversݱࡏprototypeஈ֊Ͱ͢ ྃ͝ঝ͍ͩ͘͞
Cluster, Inc. All Rights Reserved. 3 ࣗݾհ @uzzu Cluster, Inc.
ιϑτΣΞΤϯδχΞ झຯ: VR, ࡶଟͳٕज़ݕূ, ಡॻ, DTM, ֨ήʔ, εϓϥ
Cluster, Inc. All Rights Reserved. 4 ClusterͷAndroidΞϓϦʹ͍ͭͯ AndroidΞϓϦ ࠾༻ใ AndroidΞϓϦΤϯδχΞืू
⬆ inroom (Unity as a Library) ⬅︎ outroom (Native App)ɹɹɹ
Cluster, Inc. All Rights Reserved. 5 ΞδΣϯμ ɾContext Receivers͕དྷΔ·Ͱͷ͓͞Β͍ ɾContext
Receiversͱɺ༻ྫ ɾContext Receiversͷ՝ɺࢥ͍ ɾ·ͱΊ
Cluster, Inc. All Rights Reserved. 6 ContextReceivers͕དྷΔ·Ͱͷ͓͞Β͍ KEEP(https://github.com/Kotlin/KEEP) YouTrack(https://youtrack.jetbrains.com/) Kotlin
Slack(https://kotlinlang.slack.com/) ͍͔ͭ͋͘Δ͕ͦͷதͰ2ͭͷissueΛൈਮ
Cluster, Inc. All Rights Reserved. 7 Compile-time Extension Interfaces https://github.com/Kotlin/KEEP/pull/87
2017/10ࠒ ɾ࠷ॳظʮType Classesʯͱ͍͏λΠτϧͰproposal͕ॻ͔Ε͍ͯͨ ɾʮ͍ͭʹKotlinʹܕΫϥε͕དྷΔ…?!ʯͱ͍͏ࣄͰք۾Γ্͕Δ
Cluster, Inc. All Rights Reserved. 8 Compile-time Extension Interfaces https://github.com/Kotlin/KEEP/pull/87
Cluster, Inc. All Rights Reserved. 9 Compile-time Extension Interfaces https://github.com/Kotlin/KEEP/pull/87
ɾcompanion objectͱͷׂͷॏෳ ɾJVMͱͷ૬ޓӡ༻ ɾෳͷϨγʔόʹର͢Δ֦ுߏจ͕ඞཁ ɾimplicit parameterͷ͠͞ ɾetc…
Cluster, Inc. All Rights Reserved. 10 Multiple receivers on extension
functions/properties https://youtrack.jetbrains.com/issue/KT-10468 https://youtrack.jetbrains.com/issue/KT-42435
Cluster, Inc. All Rights Reserved. 11 ͦͯ͠Context Receivers https://github.com/Kotlin/KEEP/issues/259 https://github.com/Kotlin/KEEP/blob/master/proposals/context-
receivers.md ឯ༨ۂંʹ͍ͭͯProposalʹॻ͔Ε͍ͯΔ (Alternative approaches and design tradeoffs) 1.6.20-M1 ʹͯPrototypeͱͯ͠ϦϦʔε https://blog.jetbrains.com/kotlin/2022/02/kotlin-1-6-20-m1- released/ freeCompilerArgs = listOf("-Xcontext-receivers")
Cluster, Inc. All Rights Reserved. 12 Context ReceiversͷGoal (ͷ͏ͪ2͚ͭͩհ) ɾίϯςΩετநԽΛهड़͢ΔͨΊͷ
ɹmember extension(ϝϯόʔ֦ு)ΛऔΓআ͘
Cluster, Inc. All Rights Reserved. 13 Context ReceiversͷGoal (ͷ͏ͪ2͚ͭͩհ)
Cluster, Inc. All Rights Reserved. 14 Context ReceiversͷGoal (ͷ͏ͪ2͚ͭͩհ)
Cluster, Inc. All Rights Reserved. 15 Context ReceiversͷGoal (ͷ͏ͪ2͚ͭͩհ)
Cluster, Inc. All Rights Reserved. 16 Context ReceiversͷGoal (ͷ͏ͪ2͚ͭͩհ) ɾKotlinͷܕγεςϜͰෳͷϨγʔόΛ࣋ͭ
ɹίʔυϒϩοΫΛදݱͰ͖ΔΑ͏ʹ͢Δ
Cluster, Inc. All Rights Reserved. 17 Context Receiversͷͦͷଞͷྫ ɾίϯετϥΫλͷӅṭ +
Contextࢀর
Cluster, Inc. All Rights Reserved. 18 Context Receiversͷͦͷଞͷྫ ɾOverloading(※ҙ͋Γ) ͜͏͍͏ίʔυॻ͔ͳ͍Ͱɺͳ༰Proposalʹهࡌ͞Ε͍ͯΔ
(contexts-and-coding-style)
Cluster, Inc. All Rights Reserved. 19 ɾContext Functionͷείʔϓ֊ͷਂ͞(ݕ౼த) ɾReflectionະରԠ(Prototypeஈ֊ͰΒͳͦ͏ͳؾ͕) ɾΤοδέʔεͷରԠ
(Kotlin 1.8.0ͰҰ෦मਖ਼ࡁ) ɾSyntax Highlighting(Τϥʔు͘ͷͰےͰ) ɾetc… Context Receiversͷ՝(Future Work)
Cluster, Inc. All Rights Reserved. 20 (ϓϩτλΠϓஈ֊Ͱͱ͔͍͘͏͖ Ͱͳ͍ͷঝͰ) ɾهड़ͷબࢶ͕ଟͯ͋͘Μ·Γࠓ·ͰͷKotlinΒ͘͠ͳ͍Α͏ͳؾ͕͢Δͷ͕ ɹݸਓతʹٯʹ໘ന͍
ɾCompile-time extensionํ໘Ͱ্͕ͬͨ՝͔ΒݟΔʹՄೳͳهड़ ɹ͜Ε͔ΒߜΒΕ͍ͯͬͯཉ͍͠ͳʔͱࢥ͍ͬͯΔ ɹ(ཞ༻͕ාͯ͘ਂ͘৮Εͳ͍ਓʑ͕͍ͦ͏ͳͷ͍ͬͨͳ͍ɺͱ͍͏ҙຯͰ) ɾݱঢ়Ͱᙱ͍ͱ͜Ζʹख͕ಧ͘ͷͰݸਓతʹॿ͔Δ Context Receiversͷࢥ͍
Cluster, Inc. All Rights Reserved. 21 Context Receiversͷࢥ͍ ɾͦͦͳͥ ”Context”
ʹͳͬͨͷ͔…ʁ ɹ=> Multiple receiversͷϓϩτλΠϓͷஈ֊Ͱ ɹɹύϥϝʔλΛஔ͖͑ΔͨΊʹ͋ΔΘ͚Ͱͳ͘ ɹɹؔݺͼग़͠ͷͨΊͷίϯςΩετΛՃ͢Δҝͷ ɹɹઃܭ͕ඞཁͩͱؾ͍ͮͨҝ ɹɹ=> ύϥϝʔλͷΘΓʹ༻͢Δ߹ʹ ɹɹɹهड़͕ʹͳΔΑ͏͍͑ͯͯ͠Δ ɹɹɹ=> ཞ༻͞Εͳ͍Α͏ʹ https://youtrack.jetbrains.com/issue/KT-10468/Multiple-receivers-on-extension-functionsproperties#focus=Comments-27-4608759.0-0
Cluster, Inc. All Rights Reserved. 22 Context Receiversͷࢥ͍ ɾͦͦͳͥ ”Context”
ʹͳͬͨͷ͔…ʁ ɹ=> Multiple receiversͷϓϩτλΠϓͷஈ֊Ͱ ɹɹύϥϝʔλΛஔ͖͑ΔͨΊʹ͋ΔΘ͚Ͱͳ͘ ɹɹؔݺͼग़͠ͷͨΊͷίϯςΩετΛՃ͢Δҝͷ ɹɹઃܭ͕ඞཁͩͱؾ͍ͮͨҝ ɹɹ=> ύϥϝʔλͷΘΓʹ༻͢Δ߹ʹ ɹɹɹهड़͕ʹͳΔΑ͏͍͑ͯͯ͠Δ ɹɹɹ=> ཞ༻͞Εͳ͍Α͏ʹ https://youtrack.jetbrains.com/issue/KT-10468/Multiple-receivers-on-extension-functionsproperties#focus=Comments-27-4608759.0-0 ͻΐͬͱͯ͠ਅ໘ʹimplicit parameterʹcode generationͳΓͰ ͪΌΜͱରԠͰ͖ΔΑ͏ʹɺ༨നͱ͍ͯͯ͠͠ΔͷͩΖ͏͔…ʁ ؾʹͳΔ…ͦΘͦΘ…ৄ͍͠ਓڭ͍͑ͯͩ͘͞
Cluster, Inc. All Rights Reserved. 23 ·ͱΊ ɾContext ReceiversܕΫϥεͷProposal͔Β
ɹෳͷϨγʔόʹର͢Δ֦ுߏจ͕ඞཁͱ͍͏ ɹྲྀΕͰ࡞ΒΕͨ ɾKotlinʹͯࣗ͘͠͠༝ͷߴ͍Proposal ɾָ͍͠ͷࠓ͚͔ͩ…ʁ ɹProposalΛಡΜͰָ͘͠ɹ ʂ
Context Receiversʹ ࢥ͍ΛͤΔ uzzu @ 2022/10/05 DroidKaigi 2022 DAY.01