I see. So how to detect which library will be available in both: Kotlin and Kotlin-Native, aka Android and iOS?

Hey, Is is possible to debug kotlin/native (using multiplatform project) application in IntelliJ EAP?

I have an interface described in kotlin:

interface Transport {
    suspend fun <T : Any> send(command: Command<T>, data: String): String
}

but when generated ios framework, there is no such method generated:

__attribute__((swift_name("Transport")))
@protocol IosTransport
@required
@end;

what’s wrong?

With the konan plugin it’s possible to name a framework artifact, but I can’t find a corrensponding way of naming a framework artifact using the org.jetbrains.kotlin.platform.native plugin. Is it not possible or am I missing something?

from_swift.png

@olonho How expensive is attaching and detaching an object from a thread? If I have a List with 100,000 items, should I worry about performance for attaching and detaching objects from a thread?

Hey, guys, is kotlin/native on windows still not a thing?

Which way Kotlin-Native deals with Strings? I mean, '65K chars will be enough for everyone' was a mistake, UTF-16 has surrogate pairs, and Java's 16-bit `char`s are not actually characters (graphemes), just UTF-16 words. And I really like the way Rust deals with strings: 'UTF-8 everywhere' and 'grapheme cluster is a thing'. Sorry if the answer is obvious, I've never read anything about KN.

I’m trying to use ios framework built from kotlin and getting this runtime error:

NSForwarding: warning: object 0x60000140a800 of class 'MyLib_stage.RpcTransport' does not implement methodSignatureForSelector: -- trouble ahead
Unrecognized selector -[MyLib_stage.RpcTransport toKotlin:]

What are

methodSignatureForSelector

and

toKotlin

methods?

I think you’re missing a Coroutines context.

No enum constant org.jetbrains.kotlin.konan.MetaVersion.RC

has anyone seen this issue before? i updated to

1.3.0-rc-146

and gradle errors.

I compiled my simple example to an iOS framework. The

GitHubKt.getGitHub()

call hangs forever on iOS. Is that expected or a bug? https://github.com/bootstraponline/run_blocking

this is what Xcode displays when I pause execution with the debugger.

Hello! I noticed that there was some updates to the documentation enable bitcode in kotlin frameworks: https://github.com/JetBrains/kotlin-native/blob/master/FAQ.md#q-how-do-i-enable-bitcode-for-my-kotlin-framework I was trying to implement this in on of the kotlin examples (mmp-iOS-Android) with kotlin plugin version is: 1.3.0-rc-190-Studio3.2-1 and I get the warning the following warning:

warning: flag is not supported by this version of the compiler: -Xembed-bitcode

and the generated frameworks do not contain bitcode. I was wondering what I'm doing wrong and how can I necessarily update the version of the compiler?

👋 I asked this on twitter a few days ago but figured I’d come straight to the source and see if anyone here had any bright ideas:

NSString.create

returns an

NSString

, but I’m getting

cast will never succeed

errors when I try to do a cast from

NSString

to a kotlin string

I have library, that has function with header like

int func(const char* src...);

that I use with cinterop. I want to pass inside

CPointer<ByteVar>

or

CPointer<UByteVar>

as a parameter (because char* is pointer to char) that a aquired from previous native call. However the function has in kotlin binding header

public fun func(source: kotlin.String?...

accepting kotlin string. How do I do it? Do I need to call

toKString()

? Doesn't

toKString()

involve some allocation? Does it correctly translates the

CPointer<ByteVar>

buffer to string (without some corruption due to encoding for example)? Isn't it useless step as the KString will have to be translated back to C char array later?

I'm not sure if this is the right place to ask... if not, let me know and I can remove this: I made a little kotlin app that I've been using at work to aggregate some information from our github repositories and improve my workflow. Right now it's just spitting out big chunks of formatted text to tell me things, but I wanted to build a UI around it. I was debating between making a web front-end, or potentially just having it as a desktop app. If I were to go with the desktop app, would kotlin native be a good option to build out that ui? (It only needs to work on mac).

you may want to look into electron

Go with #tornadofx

I know its not much to go on, but anyone experiencing this crash when building common multiplatform module? I get it with most of the build tasks (build, assemble, iosKlibrary). kotlin version=1.3.0-rc-198, konan version = 0.9.3-release-4233:

Configure project :common

Kotlin Multiplatform Projects are an experimental feature.

Task commoncompileKotlinIos

error: compilation failed: null * Source files: ExpectSuccess.kt, MyFile.kt, Extensions.kt, GameEngine.kt, Constants.kt * Compiler version info: Konan: 0.9.3 / Kotlin: 1.3.0 * Output kind: LIBRARY exception: kotlin.KotlinNullPointerException org.jetbrains.kotlin.backend.konan.optimizations.Devirtualization$DevirtualizationAnalysis$InstantiationsSearcher.processVirtualCall(Devirtualization.kt:281)

I can't find a single working example of how to setup a gradle kts project from clion.

Hi all, I'm trying to create a simple Android/iOS multiplatform project (https://kotlinlang.org/docs/tutorials/native/mpp-ios-android.html#creating-the-shared-module) using IDEA CE. I'm running into issues with the

iosMain

module, where the IDE complains about Kotlin not being configured, while

androidMain

and

common

dir/module work fine. I've added it as a

sourceSet

in

build.gradle

, with and without the stdlib, tried the plugin DSL, restarted the IDE, invalidated caches, all with no avail. Additionally, there seem to be no native dependencies available, meaning any import from e.g.

platform

is unrecognized. I've added the

<https://dl.bintray.com/jetbrains/kotlin-native-dependencies>

repo, but the issue remains. Any ideas on how to resolve the two problems?

Hi, everyone. I am trying to get up and running with Kotlin/Native, using GLFW3, but I have a few questions and I find the pages on Github and KotlinLang a bit confusing. I have already built the GLFW3 Source into .A files, which are located in ~/Downloads/glfw/src/libglfw.a The example on gitchurn has this following def file:

headers = git2.h
linkerOpts.osx = -L/opt/local/lib -L/usr/local/lib -lgit2
linkerOpts.linux = -L/usr/lib64 -L/usr/lib/x86_64-linux-gnu -lgit2
headerFilter = git2/** git2.h

Why is this using .h files? And if I have .a files what reference should I follow to get it working?

1.3.0 🎉

What have you broke this time in my code? 😄 Lets see....

Is there a way to propagate

Deferred

object to swift?

I’m trying to get a simple glfw project started up, and i’m getting errors. Project: https://gitlab.com/hhhapz/glfw-setup-kotlin I’m thinking this has to be an issue with my dependencies, as when it’s a simple main function with nothing, i do not get any errors with building my code. can anyone else add any ideas why this might fail, and how i could fix?

Sorry to bother you folks, but I'm a bit lost. I'm building a kotlin multiplatform library as a standalone project. Once I import the android and java artifacts into a separate project, gradle asks for the jar generated for the common module as $projectName:undefined, like a maven artifact with no groupId and no version, and neither deploying the artifact with a groupId to mavenLocal or pasting it into /libs work. How should I be doing this?

hey folks! Where can I read about the current memory and concurrency model of kotlin/native: • does it have a GC in the runtime , or automatic ref counting? • are concurrency memory model and guarantees the same as in kotlin/jvm? • what’s the current story and the plans for C ABI?

Hi, Anyone knows how can I overwrite the iOS framework name in build.gradle? I'm using a generated multiplatform project from IDEA

kotlin {
    targets {
        fromPreset(presets.jvm, 'jvm')
        // This preset is for iPhone emulator
        // Switch here to presets.iosArm64 to build library for iPhone device
        fromPreset(presets.iosX64, 'ios') {
            compilations.main {
                outputKinds('FRAMEWORK')
            }
            //customFrameworkName??
        }
    }
...