kotlin-mpp-library-tips

Transcript

1. ,PUMJO
   .VMUJ
   1MBUGPSN
   -JCSBSZ !V[[V

2. "HFOEB wܦҢ
   w,PUMJO
   .11 .VMUJ
   1MBUGPSN
   1SPKFDU ͷ֓ཁ
   wݱঢ়
   w5*14ू
   w ࠓ͸େৎ෉͚ͩͲ কདྷతʹେมͦ͏ͩͳͱࢥ͏ࣄ

3. ܦҢ  w৽نΞϓϦ޲͚ͷೝূΞϓϦ಺՝ۚ౷ׅϥΠϒϥϦ Λ࡞͍ͬͯΔ J04޲͚
   
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4. ܦҢ  w"OESPJE༻ͷೝূΞϓϦ಺՝ۚ౷ׅϥΠϒϥϦͷधཁ ͕ߴ·ͬͨ
   wͨͩ"OESPJE༻ʹϥΠϒϥϦ࡞Δࣄ΋Ͱ͖Δ͕
 ΍Ε͹Ͱ͖ͯ͠·͏ͷͰ௅ઓ͕ͳ͍
   w ݱ࣌఺Ͱࣾ಺धཁ͸ແ͍͕ ,PUMJO
   .11ͷࢼݧӡ༻΋ ݉Ͷͯ΍ͬͯΈΔࣄʹ

5. ؆୯ͳ֓ཁ wl&YQFSJNFOUBM
   GFBUVSF
   JO
   ,PUMJO
   
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   w1MBUGPSNؒͰίʔυΛڞ༗͢Δ +7.
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   wϓϥοτϑΥʔϜඇґଘͳίʔυ͸DPNNPO
   QSPKFDU
 ґଘίʔυ͸QMBUGPSN
   QSPKFDUʹॻ͍͍ͯ͘

6. Kotlin Source Codes Kotlin / JVM Kotlin / Native Kotlin

   / JS JVM Android Executable Dynamic Library iOS Node.js Browser JS Server app Desktop app etc… Android app iOS(arm32, arm64, emulator x86_64) MacOS(x86_64) Android(arm32, arm64) Linux(x86_64, arm32, MIPS, MIPS little endian) WebAssembly(wasm32) Windows(mingw x86_64) Frontend Web app Server app etc…

7. Kotlin Source Codes Kotlin / JVM Kotlin / Native Kotlin

   / JS JVM Android Executable Dynamic Library iOS Node.js Browser JS java.util.concurrent.* Handler pthread etc… Promise Coroutines - ඇಉظॲཧ -> abstraction by CoroutineContext GCD

8. Kotlin Source Codes Kotlin / JVM Kotlin / Native Kotlin

   / JS JVM Android Executable Dynamic Library iOS Node.js Browser JS nghttp2 libcurl etc… Fetch API ktor-client - HTTPClient -> abstraction by HTTPClientEngine NSURLRequest etc… apache Jetty etc… okhttp etc… request node-fetch etc..
9. None

10. .VMUJ,PUMJO.VMUJ1MBUGPSN1SPKFDU
    ݴ͍͍͚ͨͩ

11. 5FDIOPMPHZ
    4UBDL w(SBEMF
    
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    wޙ͸QMBUGPSNʹ߹Θͤͯ0L)UUQ౳

12. ͔͜͜Β5*14ू

13. (SBEMF
    1SPKFDU
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    w·Ͱ͸,PUMJO
    %4-ະαϙʔτͩͬͨ
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    TUSVDUVSFͰ΍͍ͬͯͬͨͱ ͖ͷকདྷతͳϏϧυεΫϦϓτͷϝϯς͕ਏͦ͏ʜ

14. (SBEMF
    1SPKFDU
    4USVDUVSF ➔ܥͷࠒͷQSPKFDU
    TUSVDUVSFΛ౿ऻ

15. (SBEMF
    1SPKFDU
    4USVDUVSF https://github.com/uzzu/kotlin-mpp-boilerplate

16. (SBEMF
    1SPKFDU
    4USVDUVSF ➔ܥͷࠒͷQSPKFDU
    TUSVDUVSFΛ౿ऻ
    ɹBOESPJEϏϧυݻ༗ͷόάʹҾ͔͔ͬΔࣄ΋ͳ͍
    ɹͷͰศར͚ͩͬͨͲɺطʹमਖ਼͞Ε͍ͯΔ͠
    ɹEFQSFDBUFEʹͳͬͨΒ΍ΊΑ͏͔ͳͱ͍͏ؾ࣋ͪ

17. *%&
    4FUUJOHT *%&্ͰͷVOJU
    UFTU࣮ߦʹࠔͬͨΒ

18. LUPSDMJFOU wLPUMJOSFqFDU
    ґଘ
 όΠφϦαΠζ͕େ͖͘ͳͬͯ͠·͏ʜ
    ɹ➔ݱঢ়ख෇͔ͣɻ࣏͍ͨ͠ʜ

19. LUPSDMJFOUPLIUUQ wϥΠϒϥϦ͸,PUMJO
    .11Ͱ࡞ͬͯΔ͚Ͳ
 ΞϓϦ͸,PUMJO
    .11Ͱ͸࡞͍ͬͯͳ͍
 ී௨ͷ"OESPJEΞϓϦ
    w"OESPJEͷੈքͰ͸ 3FUSPpU "QPMMP 3FBDU/BUJWF FUDʜͱ΋


    ܨ͍͗ͨधཁ͕͋Δ
    w0L)UUQ$MJFOUͷΠϯελϯεΛڞ༗͍ͨ͠

20. LUPSDMJFOUPLIUUQ wLUPSDMJFOUPLIUUQͰ͸ෆՄ
    ɹ➔0L)UUQ$MJFOU&OHJOFΛࣗ࡞ͯ͠
 ɹɹLUPSDMJFOUքͱ"OESPJEքͰ
 ɹɹ0L)UUQ$MJFOUΛڞ༗

21. LPUMJOYTFSJBMJ[BUJPO w(SBEMF
    1MVHJOͰͷ4FSJBMJ[FS%FTFSJBMJ[FSੜ੒ػೳ
 Λ࢖Θͳ͍ͱ͍͚ͳ͍ఔن໛͕େ͖͘ͳ͍
 BOOPUBUJPO
    QSPDFTTJOH͠ͳͯ͘ࡁΉͳΒͨ͘͠ͳ͍
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 ɹɹ(SBEMF
    1MVHJO͸BQQMZෆཁʹ͍ͯ͠Δ
 ɹɹৄࡉ͸
    https://uzzu.github.io/post/kotlin-json-serialization-mini.html

22. $PSPVUJOFT wͳΜ͔ͩΜͩͰ.VUFYΛΑ͘࢖͏
 ೝূपΓ͸ฒྻʹ૸ΒΕͯ΋ࠔΔ
 ͔ͭQPTUQPOFʹ΋ͨ͘͠ͳ͍
 ݺͼग़͠͸ճͰɺฒྻʹݺ͹Εͨશͯͷ࣮ߦίϯς Ωετʹฦ٫͍ͨ͠
 ͭ·ΓQVCMJTI
    
    SFGDPVOU
    WJB
    3Y ͍ͨ͠

23. $PSPVUJOFT https://github.com/uzzu/kortex

24. $PSPVUJOFT class CallCount(val value: Int) { override fun equals(other: Any?)

    = this === other } var callCount = 0 suspend fun increment(): CallCount { ++callCount delay(10) return CallCount(callCount) } ྫ
    ϝιουίʔϧ͞Εͨճ਺Λฦ٫͢Δ͚ͩͷؔ਺

25. $PSPVUJOFT @Test fun basicWithHot() = runBlocking(hotInvocation()) { val times =

    3 val results = mutableListOf<CallCount>() val jobs = mutableListOf<Job>() repeat(times) { i -> val job = launch { runCatching { withContext(Dispatchers.IO) { withHot("hot") { increment() } } } .onSuccess { results.add(it) } .onFailure { fail("[$i] Exception occurred: $it") } } jobs.add(job) } jobs.forEach { it.join() } assertAll { assertThat(results.size).isEqualTo(times) // શͯͷ࣮ߦContextʹincrement()ͷ݁Ռ͕ฦ٫͞ΕΔ assertThat(results.distinct().size).isEqualTo(1) // ಉҰΦϒδΣΫτ͕ฦ٫͞ΕΔ assertThat(results.distinct()[0].value).isEqualTo(1) // increment()ͷݺग़ճ਺͸1ճ } }

26. $PSPVUJOFT wৄࡉ͸
 https://uzzu.github.io/post/hot-coroutines.html

27. 5FTUJOH wجຊతʹDPNNPOʹॻ͘
    wDPNNPOʹॻ͍͓ͯ͘ͱɺ֤1MBUGPSNͷVOJU
    UFTU࣮ߦ࣌ʹ·ͱΊͯVOJU
    UFTU͕࣮ߦ͞ΕΔ

28. 5FTUJOH$PSPVUJOFT wSVO#MPDLJOH͸KWNͷΈఏڙ͞Ε͍ͯΔ
 DPNNPOʹςετॻ͖͍ͨ
    wݱঢ়͸UFTUJOGSBͳTVCQSPKFDUΛ࡞ͬͯSVO#MPDLJOHΛ
 FYQFDUBDUVBM
    ͷܗʹ͍ͯ͠Δ KTͳΒQSPNJTF
    
    NPDIBͰ 
 ۩ମతͳίʔυ͸
    https://gist.github.com/uzzu/58cb8bb12c17605017edd01b8498915a
    

    w,PUMJOͳ͍͠$PSPVUJOFT
    -JCSBSZ্Ͱ
 ରԠ͕ೖΔ༧ఆʜͱࢥ͍ͬͯΔ͚ͲJTTVFḷ͍ͬͯ͘ͱ
 ΋ͬͱ͔͔Γͦ͏ͳؾ͕͢Δʜ
    https://youtrack.jetbrains.com/issue/KT-19813

29. ͜͜·Ͱ5*14

30. কདྷతʹେมͦ͏ͩͱࢥ͏ࣄ w,PUMJO/BUJWFͷςετ
 .PDLL΋"TTFSUL΋ݱঢ়/BUJWFඇରԠͳͷͰ
 ଴ͪঢ়ଶ

31. কདྷతʹେมͦ͏ͩͱࢥ͏ࣄ w,PUMJO/BUJWFͷ$*؀ڥ
 J04޲͚ͷςετ͸࣮ߦՄೳܗࣜͰు͍ͯɺYDSVOͯ͠Ϩ ϙʔτूܭ͍ͯ͠ΔJ04Ϗϧυ؀ڥ͕͍Δ
 ଞͷBSDIJUFDUVSF΋ಉ༷
 $*؀ڥͱςετϨϙʔτूܭͲ͏͢Δ QMBUGPSNຖʹ QJQFMJOFԽͯ͠΍ΔΜͩͱࢥ͏ 
 ΋ͪΖΜ/BUJWF͸J04͚ͩͰ͸ͳ͍ͷͰҎԼུ


32. কདྷతʹେมͦ͏ͩͱࢥ͏ࣄ wͨ͘͞Μ͋ΔͷͰ͓࿩͠·͠ΐ͏ʂ