This message was deleted.

This is the client setup

private val client = HttpClient {
        install(JsonFeature) {
            serializer = KotlinxSerializer()
        }
        install(Logging) {
            logger = Logger.DEFAULT
            level = LogLevel.ALL
        }
    }

I have a Kotlin Class that looks like this:

class Device {
    var didConnectFunc: CFunction<() -> Unit>? = null

    fun didConnect() {
        didConnectFunc?.ptr?.invoke()
    }
}

If I export this as a dynamic C library, I get can set the function to be executed like this:

void *didConnect() {
    printf("DID CONNECT\n");
}

lib->kotlin.root.Device.set_didConnectFunc(device, didConnect);

This works fine. What do I have to do however if I want to pass an Argument to my C function like this:

class Device {
    var didConnectFunc: CFunction<(barcode: Barcode) -> Unit>? = null

    fun didConnect(barcode: Barcode) {
        didConnectFunc?.ptr?.invoke(barcode)
    }
}

This code does not compile with the following error message:

type [@kotlin.ParameterName] Barcode is not supported here: doesn't correspond to any C type

How would I best solve this problem? Is it possible to create a pointer to the Barcode class and pass that to the function?

In my Kotlin (multiplatform) code, I have several `object`s. Let's say for instance I have one named "SomeHelper" that contains "static" methods. Why, in my "MyProject.framework/Headers/MyProject.h" file, does it add a Kt suffix to my

swift_name

? And why do I see

objc_subclassing_restricted

?

__attribute__((objc_subclassing_restricted))
__attribute__((swift_name("SomeHelperKt")))
@interface ProjectNameSomeHelperKt : KotlinBase

Hi, I’m receiving the following error when building my Kotlin multiplatform project (but only for the Kotlin native targets):

java.lang.IllegalStateException: Could not find serialized descriptor for index: -7854123172190848783

Does someone know how to solve this problem? I’m using Kotlin

1.3.61

and Gradle

5.5.1

. I tried to update to latest Kotlin dev

1.3.70-eap-96

but I still have the same problem =/

Hi, In my kn project I have android/ios/jvm sourceSets if I want my some class/function in commonMain don’t compile by ios how to setting?? Thank you very much

val str = StringBuilder (); str.append("hello");

var str = ""; str += "hello";

Second is faster then first one. Shouldn't take same time ? If not then. When to use first and when to use second ?

what's the most straightforward way to add a .klib artifact to the maven publication created for an iOS target with a framework binary?

What does

NativeBuildType

do? When setting it to

RELEASE

, it strips the result from at least 2 enums in the code leading to crashes

Hi, I have done some experimenting with Kotlin native for iOS. I have discovered at several occasions that I run into "Overload resolution ambiguity" when calling certain functions. For instance UIColor, which has 3 overloads with the same signature. How do I get the compiler to distinguish between those ?

Hey folks, is this expected that importing

import kotlin.test.Test

is highlighted red in the IDE when the test is located in the

commontTest

source set? Gradle build doesn’t fail, seems like an IDE issue.

Hi, I’m working on a native project to wrap libgit2 (similar to the gitchurn example) and perform some tasks on the server-side (Linux). My problem is that I’m using macOS for development, and I need to do cross-compile to build the version for Linux. Most of the examples are using

System.getProperty("os.name")

to identify the target, so it supposes that it would be needed to use the same OS. Is there some example that you can recommend me about how to set up the project properly for cross-compile?

👋 Quick question. I using a C API using Kotlin/Native. Using C interrop, I can use the generated object

Model

which has a field

val transform: Matrix

I want to update this transform matrix but I haven’t found a way to do it.

val model = cValue<Model> { }
// ...
model.useContents {
    // create a copy so update are lost 
    transform.useContents {
       m1 = ...
    }  
}

generated code by cinterop:

public final class Model {
   // ...
   val transform: Matrix
}

header definition: • Model: https://github.com/raysan5/raylib/blob/master/src/raylib.h#L365 • Matrix: https://github.com/raysan5/raylib/blob/master/src/raylib.h#L195

I’m trying to use an objective-c class that expects a

Class<SomeProtocol>

that it can internally instantiate when needed. In kotlin I can create a class that conforms to

SomeProtocol

- but I don’t know how to (or if it’s even possible to) get an “Objective-C class” from that class. I tried passing it as

MyClass::class

, but the compiler complains that it got a

KClass<MyClass>

but was expecting a

SomeProtocol?

- which isn’t quite right, because the API I’m calling expects a class, not an instance. Using

MyClass::class as SomeProtocol

appeases the compiler, but results in a TypeCastException at runtime. Is there anything analogous to

KotlinClass::class.java

in the native world?

If the project is reverted to a previous commit ( https://gitlab.com/napperley/prometheus-manager/commit/54ca3a199fcc935fc46e82e25fe7f9f44d31b1d1 ), and the same Gradle task is executed then there is no Konan error. Here is the link to the project: https://gitlab.com/napperley/prometheus-manager

Morning folks, I’m getting this while building an iOS framework after adding

@Throws

annotation to one of my Kotlin methods:

!dbg attachment points at wrong subprogram for function
!81136 = distinct !DISubprogram(name: "objc2kotlin.3034", linkageName: "objc2kotlin.3034", scope: !75265, file: !75265, type: !75266, spFlags: DISPFlagDefinition, unit: !1293, retainedNodes: !1295)
i8* (i8*, i8*, i8*, i8**)* @objc2kotlin.3034
  %9 = alloca [5 x %struct.ObjHeader*], align 8, !dbg !81156
!81156 = !DILocation(line: 296, column: 9, scope: !81157)
!81157 = distinct !DISubprogram(name: "Kotlin_ObjCExport_getWrappedError", linkageName: "Kotlin_ObjCExport_getWrappedError", scope: !290, file: !290, line: 296, type: !1363, spFlags: DISPFlagDefinition, unit: !289, retainedNodes: !1295)
!81157 = distinct !DISubprogram(name: "Kotlin_ObjCExport_getWrappedError", linkageName: "Kotlin_ObjCExport_getWrappedError", scope: !290, file: !290, line: 296, type: !1363, spFlags: DISPFlagDefinition, unit: !289, retainedNodes: !1295)
warning: ignoring invalid debug info in /var/folders/ch/tb8ry3t16mdgwpjqz8yzw5yc0000gn/T/konan_temp6380746194156800718/MyFramework.kt.bc
warning: no debug symbols in executable (-arch x86_64)

And no debug info seems to be generated for the framework (dSYM file shrinks significantly). there’s a bunch of warnings preceeding:

warning: linking module flags 'SDK Version': IDs have conflicting values ('[2 x i32] [i32 13, i32 0]' from /Users/username/.konan/kotlin-native-macos-1.3.61/klib/platform/ios_x64/Foundation/targets/ios_x64/native/cstubs.bc with '[2 x i32] [i32 13, i32 2]' from out)

This warnings have been here for quite some time (caused by Xcode 11.3 being the active one on my machine I presume) but haven’t caused any issues so far so I’m not sure if they are related to the issue above or not.

gethostbyname("<http://www.google.com|www.google.com>").pointed.h_addr_list

is array of h_addr but in kotlin it's cpointer of bytearray How can I get first h_addr element ? I wanna use it in

nativeHeap.alloc<sockaddr_in>.apply{ sin_addr.s_addr = /* here */ }

Hi! Is there a web framework for kotlin native?

I'm learning about compiler ? Can any one tell me what "Psi" stand for and what "Ir" stand for ?

Look like Kotlin compiler built on Jetbrains IDE text parser.

somewhere it's noted about how

object

s are initialized during runtime init on native. Does anyone know where that is?

I am trying to inspect the result of a Ktor HTTP call in Native using the lldb debugger. I’ve ran this line, which pretty prints the

result

of the call.

(lldb) command script import konan_lldb.py
(lldb) p result
(ObjHeader *) $1776 = {'exception': {'stackTraceStrings$delegate': '...', 'message': 'Bad response: HttpResponse[<https://example.com/v1.0/authentication>, 401 Unauthorized]', 'cause': None, 'stackTrace': ['0x0000000100064397', '0x000000010005d7f5', '0x000000010005d3b5', '0x000000010005d995', '0x00000001002e916f', '0x00000001002e8c00', '0x00000001002ea3ea', '0x00000001002ea980', '0x00000001002f29cd', '0x00000001002f2d04'], 'response': '...'}}

How would I now display the

response

property of the result? What is the best way to access it and display it in a readable format?

hey, I’m curious if someone has solved the problem of publishing iOS frameworks as Maven artifacts (to Artifactory, for example). I know it’s not officially supported (yet?), are there good solutions out there? So far I’ve been able to find this: https://github.com/SalomonBrys/kotlin-ios-universal-framework.

What's the difference between

lazy

and

atomicLazy

? Is

lazy

not thread-safe on native?

Hi all, I’ve been taking a look at Kotlin/Native for the past couple of days looking at the possibility of using it for iOS and Android app development.  At the moment I’m taking a look at executing a network request using Ktor. Just a simple login request. If successful the API returns an auth token. This case works great. My problem is if the request is unsuccessful (the username / password combination is incorrect, one of the fields wasn’t provided, etc.) the API returns a 400 response and some JSON with a reason as to why the request failed. At the moment the only thing I get is the Throwable which tells me the error code. Ideally I’d like to still decode the json in the response to present a more helpful error message.  tl;dr: How can I deserialise the response of a failed network request?

Hey all, so I’m trying to use AppCode for the iOS/Swift side of my Kotlin/Native project and am finding that references to the “app” framework (from Kotlin/Native) show up as unresolved. It compiles and runs fine but the AppCode IDE simply doesn’t know where the library is?! So I have no code completion. The thing is if I switch over to XCode then the references are fine and I can get code completion for code in the “app” framework. Any ideas? Performing a clean doesn’t help either.

I think I missed the memo. Does native run tests for darwin targets other than macos in 1.3.70?

hmm I’m getting “This cast can never succeed” warnings while building with Gradle and also in IDE. I’m casting between

String

and

NSString

(in both directions). Seems to be working fine in runtime too. The docs confirm that’s the way to go. Are these false positives?

Hi there, I'm trying to import cocoapods library in my k/n project, but following all available instructions, leaves me with unresolved import. I'm using cocoapods gradle plugin, add pods into cocoapods{}, generate podspec, add my podspec into podfile of ios project, make pod install, run workspace, build it, go back to android studio project and i have unresolved import :/

Maybe someone will be able to point me into right direction? I have several multiplatform modules in my project, which I would like to export to Xcode as frameworks. I already know it only possible to have only one multiplatform framework, so the task is to put all modules together and create a single framework from them. And this is where I stuck. Some are mentioning generating `.klib`s for each module and generate single framework from them, but is there some kind of a guide for this? Currently I’m using

packForXcode

gradle task from Kotlin tutorial (https://play.kotlinlang.org/hands-on/Introduction%20to%20Kotlin%20Multiplatform/01_Introduction). Ideal would be to modify it somehow to get several modules as input and produce one framework on output.