What is the performance hit for freezing an object? If I freeze an object that has references to other objects, are they frozen as well? Let's say I have an object hierarchy of ~1000 objects, and freeze the root object. Why kind of performance hit are we talking about?

Kotlin Native has some server-side samples, could that be extended to cover Serverless? Is Serverless development going to be officially supported in Kotlin Native?

It looks like there is an attempt to creating a kotlin mocking library for java and js: http://mockk.io/ It seems to me they won't be able to support Kotlin-native, or is there some creative way that I'm unaware of that mocking in Kotlin-native / the C world is possible?

Question, what does a SWIFT optional look like from the viewpoint of Kotlin. A nullable value, or something that is like

Optional

class?

or maybe the

vertexBuffer

or

vertexArrayId

isn’t set the right way, those parts are so strange and awkward for me, I do something similar in Swift and was straight forward

Can I make generated Swift protocol properties covariant? My case: Kotlin:

interface Article {
    val id: Int
    val category: Category
}

interface Category {
    val id: Int
}

Swift:

@objc
class RealmArticle: Object, KNArticle {
    @objc dynamic var id: Int32 = 0
    @objc dynamic var category: RealmCategory = RealmCategory() // type does not conform to protocol KNArticle
}

@objc
class RealmCategory: Object, KNCategory {
    @objc dynamic var id: Int32 = 0
}

Is it safe to use Swift objects in multiple Kotlin threads, assuming proper concurrency synchronization is handled? Does this change if it's a Kotlin object that extends a Swift object?

I’m so confused by the bindings generated by konan, don’t understand how to call this function, it is supposed to be just like this:

val vertexShaderSource: String = "...."
val vertexShader = glCreateShader(GL_VERTEX_SHADER)
glShaderSource(vertexShader, 1, vertexShaderSource, null)

Tried different thinks like

.toCValues()

,

.cValuesOf()

,

.cstr.getPointer(this /* memscoped reference */)

, I find so complicated some of the bindings, don’t know if theres a better way to detect that the variable is a char array and do automatically the convertion between string a char array (and vice versa) This is how the

glShaderSource

looks like in kotlin

public fun glShaderSource(shader: platform.OpenGLCommon.GLuint /* = <http://kotlin.Int|kotlin.Int> */, count: platform.OpenGLCommon.GLsizei /* = <http://kotlin.Int|kotlin.Int> */, string: kotlinx.cinterop.CValuesRef<kotlinx.cinterop.CPointerVar<platform.OpenGLCommon.GLcharVar /* = kotlinx.cinterop.ByteVarOf<platform.OpenGLCommon.GLchar /* = kotlin.Byte */> */> /* = kotlinx.cinterop.CPointerVarOf<kotlinx.cinterop.CPointer<kotlinx.cinterop.ByteVarOf<platform.OpenGLCommon.GLchar /* = kotlin.Byte */>>> */>?, length: kotlinx.cinterop.CValuesRef<platform.OpenGLCommon.GLintVar /* = kotlinx.cinterop.IntVarOf<platform.OpenGLCommon.GLint /* = kotlin.Int */> */>?): kotlin.Unit { /* compiled code */ }

And this is the c function

void glShaderSource(	GLuint shader,
 	GLsizei count,
 	const GLchar **string,
 	const GLint *length);

Typically in iOS when creating UITableViewController subclass, its easy to have that subclass implements the UITableViewDataSource and UITableViewDelegate protocols. When doing so in K/N I get a "Conflicting Overloads" error for

override fun tableView(tableView: UITableView, cellForRowAtIndexPath: NSIndexPath): UITableViewCell

from the data source protocol and

override fun tableView(tableView: UITableView, didSelectRowAtIndexPath: NSIndexPath)

from the delegate protocol . Is this a known issue and is there a work around besides putting the two methods in different classes?

whats the best ide to use for kotlin native on ios? I have tried clion and appcode but none had autocompletes for the platform imports.

Post your actual lipo command. The part that confused me at first was that I was only providing the path to the

.framework

directory and expecting lipo to do the right thing. In reality I had to provide the full path to the binary inside of the framework directory. Once you have that done you’ll want to copy the headers and

.plist

file from one of the source frameworks to your new framework directory.

I’m trying to run

xcodebuild

from command line, and i have a shell script in my project that runs gradlew :

"$SRCROOT/../../../gradlew"

. If i build from xcode, it works completely fine, but if i do it from command line then the operation hangs on this line indefinitely. Does anyone know why this would be happening?

Hi, concerning build time is there anything that can make it faster ?

any idea about this problem? https://kotlinlang.slack.com/archives/C9JM6Q2UX/p1527762085000028

some people asked about GCD usage example, here you go: https://github.com/JetBrains/kotlin-native/pull/1641

If I have

MyObject.Companion.foo()

in kotlin code compiling to a framework, what’s the proper way to access it from Swift? The only thing I can figure out how to do is

MyObjectCompanion.init().foo()

, but that doesn’t seem right because I don’t want to be creating a new instance of the companion object.

Related to above issue: if i have a kotlin enum with a companion object, the objc/swift companion object does not have the same methods as the non companion version so i cannot call any methods on it. Is this expected behavior?

Understanding that the new stuff from Apple today isn’t production ready, what’s the level of effort to compile a Kotlin Native framework against the iOS 12 sdk? I’m assuming it isn’t as simple as Xcode-select but maybe I’m wrong? 🤞

Is there way to build framework for swift and not for ObjectiveC?

Is anyone using Kotlin Native for robotics?

When are we going to see Kotlin/native 0.8?

Does the K/N plugin for Appcode make any additional changes to project settings(project.pbxproj) besides adding the "Compile Kotlin/Native" build phase?

@channel Kotlin/Native team is pleased to announce release v0.7.1 of our toolchain. This is a bugfixing release, including the following features: * Bugfixes in the runtime (indexOf, GC for kotlin.Array, enum equality) and the compiler * Fix NSBlock problem, preventing upload of binaries to the AppStore * Create primitive type boxes and kotlin.String as frozen by default * Support Gradle 4.7, provide separate run task for each executable * Support XCode 9.4 and CoreML and ClassKit frameworks on Apple platforms * Improved runtime Kotlin variable examination * Minor performance optimizations in compiled code and runtime * Add

disableDesignatedInitializerChecks

definition file support Binaries: * https://download.jetbrains.com/kotlin/native/builds/releases/0.7.1/macos/kotlin-native-macos-0.7.1.tar.gz * https://download.jetbrains.com/kotlin/native/builds/releases/0.7.1/linux/kotlin-native-linux-0.7.1.tar.gz * https://download.jetbrains.com/kotlin/native/builds/releases/0.7.1/windows/kotlin-native-windows-0.7.1.zip GitHub release page is https://github.com/JetBrains/kotlin-native/releases/tag/v0.7.1

Does JetBrains have a Kotlin Native Docker image that can be used with OpenFaaS (https://www.openfaas.com/)?

Round trip for the Kotlin Native one is 0.015s vs 0.581s for the Python one 😀 .

I have a question about Kotlin MPP libraries publishing for Kotlin/Native Currently you can publish library as .klib that contains binaries for multiple targets, but it looks like not a perfect solution for pure K/N library, as library author I would like to publish library for K/N (without platform-specific code) so other K/N projects could use it, but building and publishing binaries for particular platform is not flexible enough, for example you cannot publish library for macos using linux CI or just publish for any non-cross-compiled targets. Is there any consideration to allow publish IR or even source code K/N compatible libraries (as klib or any other format) that can be used easily by any K/N project. And yeah, I heard about idea to use IR as a format for distribution of Kotlin libraries, but looks like this is not near future plan, and it’s not critical for JVM or JS, but for K/N this looks like a way to publish libraries is much more flexible and the only really platform-independent way. Maybe it would be nice to try with K/N even if it’s impossible to do for other Kotlin platforms

Can we use a module wiritten in K/N with a Kotlin-JVM module?

does Kotlin native have a solution for making network requests yet?

If you're targeting iOS you can use its platform specific api NSURLSession