is there any documentation on using the kotlin

List

type (and other types from the

collections

package) in dynamic libraries? the generated headers indicate that a

<pkg>_kref_kotlin_collections_List

type is being used, but I can’t find any docs on it

[KN / iOS] Question regarding the worker and memory leaks, I have a small test (not a unit test but rather screen with one button) that reads 500 times 1.2Mb text file into the memory via worker. I see after worker terminated the memory released but not to the previous level (before test started) but +500Kb. Every time I repeat this exercise I see +500Kb increase after every test. I’m not really sure if that Xcode Instruments misrepresents the memory or there is some leaks inside the KN runtime.

val worker = Worker.start()
        worker.execute(
            mode = TransferMode.SAFE,
            producer = { { operation() }.freeze() },
            job = {
                it()
            }
        )
        worker.requestTermination()

To read from file

NSString.stringWithContentsOfURL(url = file, encoding = NSUTF8StringEncoding, error = null)

Hi, i'm getting a

Uncaught Kotlin exception: kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen

on ios, for trying to change the value of this var:

object MyObject {
    var myVar: Boolean = false
}

is this expected? On Android i can the change the value without any issue.

Can i use kotlin native so that i can end up with a native binary instead of a jar file while also having data structures like arraylist available?

Hi, I'm looking for an example macOS project made with Kotlin/Native, where can I find one?

Hi! I've migrated to the new MPP plugin. The project is an iOs/Android app. It works fine on my macbook, but when I try to compile Android app on my linux system, I receive a error:

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':adsmodule:transformClassesAndResourcesWithPrepareIntermediateJarsForDebug'.
> java.lang.RuntimeException: java.util.zip.ZipException: duplicate entry: ru/subprogram/guitarsongs/ads/BannerAdFactory.class

Duplicate entry could be different after clean/rebuild. I use IDEA Ultimate 2018.3.5, tested kotlin version

1.3.21

and

1.3.30-eap-45

.

Does K/N initialize all globals on the main thread during runtime init? (for native, specifically)

Is there a way to create a non-capturing lambda for use with a Worker that isn't just providing the lambda in-line at the Worker.execute callsite?

Do you have to freeze the objects stored in variables marked

@SharedImmutable

?

Is

import kotlinx.coroutines.newSingleThreadContext

available in

kotlinx-coroutines-core-common

? I can’t see any information here: https://github.com/Kotlin/kotlinx.coroutines/tree/master/common/kotlinx-coroutines-core-common But I can see it’s available for `kotlinx-coroutines-core`: https://github.com/Kotlin/kotlinx.coroutines/blob/master/core/kotlinx-coroutines-core/README.md

Maybe someone here can help 🙂

Am I correct that if I’m doing database stuff for MPP for iOS + Android, my options are basically a) SQLDelight b) Write `expect class`es which talk to Room and Core Data

Hi everyone. Is it possible to have a unit test in commonTest of a library module and run it in iOS test runner?

is there a preferred library/method to serialize network data into data classes? on android I would use GSON or Moshi, but those don't seem to work on CommonMain

sorry for my dumb questions, but i just got back into KN/multiplatform and things have changed a bit. I'm trying to figure out why the latest ktor doesnt have have support for the iOS client:

Could not resolve io.ktor:ktor-client-ios:1.2.0-alpha-2

there's a thread on ktor about it, but it hints to just dropping support for iOS. Also, my versions of kotlin and gradle seem to be out of date. What are the latest ones you're using?

kotlin.code.style=official

# gradle version
gradle_version = 3.2.1

# kotlin versions
kotlin_version = 1.3.21
kotlin_native_version = 1.3.11
ktor_version = 1.2.0-alpha-2
kotlinx_coroutines_version = 1.1.0

thanks

I got this code from the weather function sample and I don't understand why it is throwing this error

I have read all over the docs and the internet in general for help. Nothing.

Is it possible to create a

CoroutineContext

from iOS and inject that into a kotlin/native class?

Hi, is there an ETA when the current Kotlin/Native Plugin for AppCode will be updated? https://plugins.jetbrains.com/plugin/10619-kotlin-native-for-appcode

@Benedict Pregler The new build of the AppCode plugin has just been uploaded. You can create a new project from the templates and give it a try. Make sure to click the "Import gradle project" button when opening the project for the first time.

Hello, i was compiling various kernel32 headers for use in a scoreboard memory-reading application in kotlin/native, and only one of them successfully made it into a klib. I've tried all the others out individually and it still doesn't seem to work for any of them. Here's my .def file:

headers = memoryapi.h processthreadsapi.h winnt.h tlhelp32.h handleapi.h
compilerOpts.win32 = "-IC:/Program Files (x86)/Windows Kits/8.1/Include/um/" "-IC:/Program Files (x86)/Windows Kits/8.1/Include/shared/"
linkerOpts.win32 = "-LC:/Program Files (x86)/Windows Kits/8.1/Lib/winv6.3/um/x86/kernel32.lib"

Only tlhelp32.h makes it through. Am I doing something wrong or should i just wait it out for a newer version?

Does this change at all based on native compiled arch?

I'm trying to use Firebase Objective C code in Kotlin. I added this to the "common" build.gradle:

compilations.getByName("main") {
    val firebase by cinterops.creating {
        defFile("$projectDir/src/iOSMain/cinterop/firebase.def")
        val pods = "$projectDir/../ios/Pods"
        includeDirs(
            "$pods/FirebaseCore/Firebase/Core/Public"
        )

        compilerOpts("-F$pods/Firebase -F$pods/FirebaseCore")
        linkerOpts("-F$pods/Firebase -F$pods/FirebaseCore")
    }
}

And this is the

firebase.def

file:

language = Objective-C
headers = FirebaseCore.h

When trying to edit the Kotlin code I have no issues importing the Firebase framework. But when compiling for iOS (packForXCode) I get this error:

ld: warning: could not create compact unwind for _ffi_call_unix64: does not use RBP or RSP based frame
Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_FIRApp", referenced from:
      objc-class-ref in combined.o
ld: symbol(s) not found for architecture x86_64
error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld invocation reported errors

Does anyone know why this is happening? Is there something wrong in my configuration?

https://kotlinlang.slack.com/archives/C3SGXARS6/p1553226323370100 In reference to the quoted post shown at the bottom of this one, I think I've gotten closer, but I may have incorrect syntax. Right now my

build.gradle

looks like this:

plugins {
    id "kotlin-multiplatform" version "1.3.21"
}

repositories {
    mavenCentral()
}

kotlin {
    mingwX64("mingw") {
        compilations.main {
            outputKinds("executable")
            entryPoint "classes.main"
        }
    }
    sourceSets {
        mingwMain {
            dependencies {
                implementation fileTree(include: ['*.klib'], dir: 'libs')
            }

        }
        mingwTest {}
    }
}

task runProgram {
    println("getLibsDirName = "+getLibsDirName())
    def buildType = "RELEASE" // Change to 'DEBUG' to run application with debug symbols.
    dependsOn kotlin.targets.mingw.compilations.main.linkTaskName("EXECUTABLE", buildType)
    doLast {
        def programFile = kotlin.targets.mingw.compilations.main.getBinary("EXECUTABLE", buildType)
        exec {
            executable programFile
            args ""
        }
    }
}

and my

settings.gradle

looks like this:

pluginManagement {
    resolutionStrategy {
        eachPlugin {
            if (requested.id.id == "kotlin-multiplatform") {
                useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:${requested.version}")
            }
        }
    }
}
rootProject.name = 'gearNet'
includeBuild './src/libs'

Any advice on how to get my project to recognize and implement

./src/libs/kwinhelp.klib

within my project? Any advice or even a direction on where to look for an answer is very much appreciated.

I'm trying to use the cinterop tool and it keeps saying that it can't find the headers I put in my .def file. The docs say they should be relative to the def file but no matter how I put the path to my headers, it still says that it can't find my headers. Am I supposed to put compiler/linker options? I don't see other examples doing so. The tool doesn't give much information about why it can't find the headers, just says it can't find them. My def file is just a single line of

headers = include/hidapi.h

.

Is is possible to edit Kotlin/Native code in AppCode with autocomplete? I opened the KotlinConf spinner project and it shows unresolved references for

platform.*

, but has no issues compiling. If I open the same project in IntelliJ IDEA or Android Studio I don't get these errors and there is autocomplete. This basically makes editing the Kotlin/Native code impossible in AppCode and I would need to use IntelliJ IDEA or Android Studio just for the Kotlin files.

Hello, any suggestion on open a local

.json

file and parsing into a model for an android/ios library? I just saw for the parsing i could use

kotlinx.serialization

and for opening the file within the project? Any other

kotlinx

project?

interactor.login(trigram: trigram) is a kotlin native function My problem is when i reach that code i get a weird error illegal attempt to access non-shared login.LoginInteractor@16f8b08 from other thread Anyone can help?