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Kotlin 2.0을 통해 알아보는 코틀린의 미래

Kotlin 2.0을 통해 알아보는 코틀린의 미래

라인 테크 토크에서 공유한 "코틀린 2.0을 통해 알아보는 코틀린의 미래" 발표 자료입니다.

Leonardo YongUk Kim

May 24, 2023
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  1. 2 Contents 01 02 03 04 05 Kotlin 2.0 ߂

    ୶о੸ੋ ঱য੄ ૓ച Kotlin Multiplatform Compose for iOS Compose for Desktop Compose for Web
  2. 6 ೐ۿ౟ূ٘৬ ߔূ٘о ޖ঺ੋоਃ? ೐ۿ౟ ূ٘ ౵ࢲ৬ दݭ౮ গօۄ੉੷۽ ҳࢿ.

    ࣗझ௏٘ܳ ੍য ҳޙ ౟ܻܳ ٜ݅Ҋ ੄޷ ੿ࠁܳ ୶оೣ. ߔূ٘ ઺р ௏٘ ࢤࢿ & ୭੸ചӝ৬ ݠन ௏٘ ࢤࢿ ୭੸ ച۽ ա־য૗. ୭੸ചܳ ೞҊ ӝ҅য ௏٘ա ఋѶ ௏٘ܳ ࢤࢿ. 
 ௏ౣܽ੄ ҃਋ীח ੗߄ Bytecodeա LLVM੄ Bitcodeо ఋѶ. ௏ౣܽ ௏ౣܽ੄ ҃਋ী (1.3ө૑) ઺р ௏٘ ࢤࢿ & ୭੸ ചӝо হ঻਺. 
 ബਯࠁ׮ח ௏ౣܽ ঱য੄ ߊ੹੉ ؊ ઺ਃ೮਺. (ӝࣿࠗ଻) https://twitter.com/kotlin
  3. 7 ߔূ٘ী IR੄ بੑ IR ߔূ٘ীࢲ ҕਬೞח ઺р ࣻળ੄ ঱য

    IR generator & optimizer IRਸ ٜ݅Ҋ ୭੸ച ೞח ౵౟. 
 ௏ౣܽ ֎੉౭࠳ܳ ٜ݅ݴ ࢜܂ѱ ୶о. ੉ റ JVM(1.5)җ JS(1.6)ਸ IRਸ ॳب۾ ੤ ੘ࢿ. 
 
 ҕా੸ੋ ୭੸ചܳ ೡ ࣻ ੓׮. (Ӓ੹ө૑ ח ߔূ٘݃׮ ߹ب۽ ੘ࢿ.) 
 
 ੄بೞ૑ח ঋও૑݅ ࢜ ߔূ٘੄ ࢿמ੉ ೱ࢚! https://twitter.com/kotlin
  4. թ਷ Ѫ਷ ೐ۿ౟ূ٘ ۨѢद PSI (Program Structure Interface) PSI Program

    Structure Interface ௏ౣܽ ௏٘ܳ ౵यೠ Ѿҗ ౟ܻ. IntelliJীࢲ ݢ੷ ॳ؍ ҳઑܳ ௏ౣܽ ஹ౵ੌ۞ب ରਊ. ࣗझ ௏٘৬ Ѣ੄ ؀਽غח ױࣽೠ ഋక.
  5. PSI + BindingContextо ޙઁо ੓աਃ? ୭੸ച ೐ۿ౟ূ٘ ࣻળীࢲ PSIীࢲ ୭੸ചܳ

    ೞח Ѫ੉ औ૑ ঋ਺. ޙݓ੉ ߹ب੄ BIndingContextী ੓ח Ѫب ୭੸ചী જ૑ ޅೣ. நए ޷झ BindingContextо Ѣ؀ೠ Map੉যࢲ நए ബਯী જ૑ ޅೣ.
  6. ೐ۿ౟ূ٘ ৵ FIR੉ فѐо ੓աਃ? ౵ࢲ 3BX'*3࠽؊ "OBMZ[F ୓ழ ౵झ౟ܻ

    '*3 '*3 ૓ױ Lowering ױࣽച(simplify)ۄҊ ࢸݺ. ٣गѢ݂(Desugraing)੉ۄҊب ಴അ. ࠺ҳઑച (Desctructure)ܳ োࣘػ ؀ੑਵ۽ ߸҃. for ١ਸ whileਵ۽ ߸҃. ো࢑੗(+, +=, in, …)١ਸ ݺद੸ੋ ഐ୹۽ ߸ഋ. ӝఋ ೐ۿ౟ূ٘ ࣻળীࢲ੄ ୭੸ചب ࣻ೯.
  7. 18 FIR ӝ߈੄ ೐ۿ౟ূ౟੄ ੢੼ ஹ౵ੌ۞ ࢿמ FIR ӝ߈ਵ۽ ݅ٚ

    ೐ۿ౟ূ٘ח PSI + BindingContext ӝ߈੄ ೐ۿ౟ূ٘ ࠁ׮ ഻न ࡅܴ. IDE IDEب ೐ۿ౟ূ٘ܳ ҕਬ. ੋభܻઁ੉ীࢲ ੄޷ܳ ౵ঈೞҊ ௏٘ ೞ੉ۄ੉౴, ࠙ࢳೞח ࣘبо ࡈۄ૗. Kotlin IDE ೒۞Ӓੋ ੤੘ࢿ઺.
  8. 19 о੢ ݆੉ ਃ୒߉਷ ӝמ Static Extensions ੋझఢझо ইפ؊ۄب ഛ੢

    ೣࣻܳ ٜ݅ ࣻ ੓਺. Collection Literals listOf, mapOf, setOf о ইצ ܻఠۡ۽ ஸ۩࣌. Name-based Destructuring ࠺ҳઑച(ҳઑ࠙೧)ܳ ਤ஖ ӝ߈੉ ইפۄ ੉ܴ ӝ߈ਵ۽. Explicit Fields э਷ ஶࣆ੄ private, public ೐۽ಌ౭ܳ ٜ݅૑ ঋইب ؽ. Context Receivers ݯߡ ഛ੢ ೣࣻ ੉৻ী Contextܳ ૑੿ೡ ߑߨ੄ ୶о.
  9. 30 ੉ܴ ӝ߈ ࠺ҳઑച (Name-Based Restructuring) https://youtrack.jetbrains.com/issue/KT-19627 EBUBDMBTT1FSTPO  WBM

    fi STU/BNF4USJOH  WBMMBTU/BNF4USJOH  WBM fi STU/BNF MBTU/BNF QFSTPO
  10. 31 ੉ܴ ӝ߈ ࠺ҳઑച (Name-Based Restructuring) https://youtrack.jetbrains.com/issue/KT-19627 EBUBDMBTT1FSTPO  WBM

    fi STU/BNF4USJOH  WBMMBTU/BNF4USJOH  WBM MBTU/BNF  fi STU/BNF QFSTPO
  11. 33 ஶఖझ౟ ࣻन੗ (Context Receivers) https://youtrack.jetbrains.com/issue/KT-10468 fun process( context: ServiceContext,

    request: ServiceRequest ) { val data = request.loadData(context) } context(ServiceContext) fun processRequest(request: ServiceRequest)
  12. 36 ݺद੸ ೙٘ (Explicit Fields) https://youtrack.jetbrains.com/issue/KT-14663 private val _applicationState =

    MutableStateFlow(State()) val applicationState: StateFlow<State> get() = _applicationState
  13. 37 ݺद੸ ೙٘ (Explicit Fields) https://youtrack.jetbrains.com/issue/KT-14663 private val _applicationState =

    MutableStateFlow(State()) val applicationState: StateFlow<State> get() = _applicationState val applicationState: StateFlow<State> fi eld = MutableStateFlow(State())
  14. 40 K2 ೐ۿ౟ূ٘ীࢲח ೒۞Ӓੋਸ ੸ਊೞӝ एਕࢲ ೧Ѿ val df =

    DataFrame.readCSV("KotlinSO.csv") val kmp = df. fi lter { tags?.contains("multiplatform") ?: false } kmp.add("years") { creationData.year } .groupBy { year } .count()
  15. 46 Kotlin Multiplatform Mobileਸ ਤ೧ ೙ਃೠ Ѫ Android Studio ݣ౭೒ۖಬ

    গ೒ܻா੉࣌ਸ ٜ݅Ҋ दޛۨ੉ఠա ೞ٘ਝযܳ प೯.
  16. 47 Kotlin Multiplatform Mobileਸ ਤ೧ ೙ਃೠ Ѫ Xcode Xcodeח ߔӒۄ਍٘ীࢲ

    ࣻ೯ ؽ. Kotlin/Nativeо ੄ઓೞח ߡ੹ਸ ࢸ஖೧ঠ ೣ.
  17. 48 Kotlin Multiplatform Mobileਸ ਤ೧ ೙ਃೠ Ѫ Kotlin Multiplatform Mobile

    উ٘۽੉٘ झౚ٣য়ীࢲ Kotlin Multiplatform Mobile ೒۞Ӓੋ ࢸ஖.
  18. 49 Kotlin Multiplatform Mobileਸ ਤ೧ ೙ਃೠ Ѫ JDK Android Studioী

    ੄೧ ࢸ஖. Kotlin Plugin Android Studioী ࢸ஖. সؘ੉౟ܳ ೧ࢲ ߡ੹ਸ ୭नച ೧ঠ.
  19. 51

  20. 55 জ ֎੐ ӝࠄਵ۽ androidApp, iosApp, shared۽ জ ֎੐੉ ੿೧૗.

    iOS framework distribution਷ Regular۽ Cocoapods -_-ਸ ࢶఖೡ ࣻ ੓਺.
  21. 60

  22. 61 ߡ੹ ୊ܻח যڌѱ ೮ਸөਃ? expect৬ actual shared/src/ commonMain iOS৬

    Androidীࢲ ݽف ࢎਊೡ ੋఠಕ੉झܳ expect ఃਕ٘۽ ݅ٞ.
  23. 64 KMM for iOSীࢲ ݅աѱ غח ࢚ടٜ ObjC അ੤ Kotlin਷

    ObjC݅ ૑ਗ೧ࢲ ઁցܼ ௿ېझ݅ ૑ਗೞҊ ੋఠಕ੉झܳ ૑ਗೞ૑ ޅೣ. Abstract classܳ ؀न ࢎਊ೧ঠ ೣ. 
 @HinddenFromObjC, @ObjcName ఃਕ٘ܳ ੸ӓ੸ਵ۽ ഝਊೞ੗. @ObjcName(swiftName=“_”) _ח ౠࣻೠ ఃਕ٘. plane.fuel(volume: .Gallos(gallos: 12.5)) ؀न plane.fuel(.Gallons(12.5)) 
 ੢ӝ੸ਵ۽ח ௏౟ܽ੉ Swiftܳ ߄۽ ఋѱ౴ೡ Ѫ੐. Swiftܳ ObjeCܳ ઁ৻ೞҊ ߄ੋ٘ೡ ࣻ হ঻ӝী ߊ ࢤೠ ޙઁ. SourceKitten৬ э਷ بҳٜ۽ ઺р ௏٘ܳ ࢤࢿೞ੗. ۄੋ ؘݫী஠੉ ѻ਷ য۰਑ Suspend suspendח ௒ߔ(completion handler)੉ غҊ ௒ߔ਷ Swiftীࢲ async۽ ഐ୹ оמೞ૑݅ ஂࣗо ࠛ оמೣ. Flowب ੜ ૑ਗغ૑ ঋ਺. 
 KMP-NativeCoroutines ۄ੉࠳۞ܻܳ ഝਊ೧ঠ ೣ. https://github.com/rickclephas/KMP-NativeCoroutines 
 ௏ౣܽ ৘৻о झਤ೐౟ ೩ٜ۞ ੹׳ غ૑ ঋਸ ࣻ ੓য @Throws ఃਕ٘۽ Errorܳ ૑੿೧ঠ ೣ.
  24. 65 KMM for iOSীࢲ ݅աѱ غח ࢚ടٜ CocoaPods ই૒ ҕध੸ਵ۽

    SPM(Swift Package Manager)ܳ ૑ਗೞ૑ ঋ਺. Gradle API ࣻળীࢲ ੿ܻػ ੉റ ী ૑ਗೠ׮Ҋ ೣ. (঱ઁ?) CocoaPodsח ੄ઓࢿਸ ࣗझ۽ оઉ৬ э੉ ࠽٘ী ࢎਊೞӝী ݒ਋ ࠺ബਯ੸. TouchLab੄ ۄ੉࠳۞ܻ KMMBridgeܳ ࢎਊ೤द׮. https://github.com/touchlab/KMMBridge 
 
 SPMਸ ؀਽ೞӝ ਤ೧ࢲח Git ܻನ૑షܻ৬ झక౮ ౵ੌ ੷੢ࣗо ೙ਃೞ׮. (AWS?) Frozen Global Objectח ӝࠄਵ۽ frozen. ੽Ӕೡ ࣻ ੓૑݅ ߸҃ೡ ࣻ হ਺. @ThreadLocalਸ ࠢ੉ݶ freeze ഐ୹ উೣ. Atomicೠ ੗ܐҳઑ੄ ࢎਊ੉ ೙ਃೡ ࣻ ੓׮. 
 freeze() ഛ੢ ೣࣻܳ ੉ਊ೧ ؘ੉ఠܳ ঴ܾ ࣻ ੓Ҋ ಽ ࣻח হ਺. Global ೐۽ಌ౭ח ݫੋझۨ٘ীࢲ݅ ࠅ ࣻ ੓਺.
  25. 66 KMM for iOSীࢲ ݅աѱ غח ࢚ടٜ Memory Management झఖ

    ౟ۨ੉झ ٣ߡӦ য۵Ҋ, ݫݽܻ ݒפ૑ݢ౟о ই૒ উ੿੸੉૑ח ঋ਺. 
 https://youtrack.jetbrains.com/issue/KT-55512 ଵҊ Kotlin Multiplatform Mobileਸ ഝਊೠ ؘ݃ী஢ ٘ۄ੉ߡজ ѐߊ ੉ঠӝ Kotlin/Multiplatform for iOS developers : state & future by Salomon Brys
  26. 69 Compose for iOSܳ ਤ೧ ೙ਃೠ Ѫ Android Studio Android

    জҗ iOS জܳ प೯ೡ ࣻ ੓ח ѐߊ ജ҃. Xcode Xcodeח ߔӒۄ਍٘ীࢲ ࣻ೯ ؽ. Kotlin/Nativeо ੄ઓೞח ߡ੹ਸ ࢸ஖೧ঠ ೣ. Kotlin Multiplatform Mobile উ٘۽੉٘ झౚ٣য়ীࢲ Kotlin Multiplatform Mobile ೒۞Ӓੋ ࢸ஖. CocoaPods Compose for iOSب SPM(SwiftPackageManager)ܳ ૑ਗೞ૑ ঋ਺.
  27. 78 Compose for Desktop੄ ౠ૚ Cross- Platform ݣ౭೒ۖಬ੉ ইצ ௼۽झ೒ۖಬਵ۽

    ࠙ܨ. 
 JVM੉ ఋѶ੉Ҋ JVM ؋ী ৈ۞ ೒ۖಬীࢲ بח Ѫਸ ௼۽झ೒ۖಬਵ۽ ࢸݺ. SKIKO SKIA੄ ௏ౣܽ ߄ੋ٬ SKIKOী ੄೧ ۪؊݂. https://github.com/JetBrains/skiko SKIA੄ ಪ౟ ۪؊݂੉ ਍৔୓ઁ ݃׮ ׳ۄ झ௼ܽ ࢫ పझ౟ܳ ೞ૑ ݈੗. Compose Multiplatform IDE support ੋభܻઁ੉ ই੉٣যա উ٘۽੉٘ झౚ٣য়ী ࢸ஖. https://plugins.jetbrains.com/plugin/16541-compose-multiplatform-ide-support IntelliJ IDEA ੋభܻઁ੉ ই੉٣য 2020.3 ੉࢚ীࢲ ࢎਊоמ.
  28. 79 Compose for Desktop੄ ౠ૚ ଵҊ৔࢚ You can do desktop

    too! By Victor Kropp https://www.youtube.com/watch?v=Mgf_9kxM1BA JDK 15 JDK11ਵ۽ ೐۽ં౟ ࢤࢿ оמ. ֎੉౭࠳ ߓನ ಁః૚ਸ ਤ೧ࢲח 15 ੉࢚.
  29. 81

  30. 82

  31. 84 Compose for Web੄ ౠ૚ WebAssembly JavaScriptܳ ॳ૑ ঋҊ WebAssembly۽

    प೯. Kotlin/WASM੉ ఋѶ. Compose HTML HTMLਸ ࢤࢿೞח Kotlin/JS੄ ۄ੉࠳۞ܻب ੓਺. Compose for Webҗ ޖҙ. Compose Multiplatform IDE support ੋభܻઁ੉ ই੉٣যա উ٘۽੉٘ झౚ٣য়ী ࢸ஖. https://plugins.jetbrains.com/plugin/16541-compose-multiplatform-ide-support IntelliJ IDEA ੋభܻઁ੉ ই੉٣য 2020.3 ੉࢚ীࢲ ࢎਊоמ.
  32. 86

  33. 87

  34. ՘