Hi, I’m a fan of Kotlin(especially JVM), so I would like to contribute Koltin/stdlib/ktor and so on. How can I search easily

good-first-issue

on YouTrack or other way? It seems that Kotlin YouTrack has no issues or tags of it. Thanks.

I have a strange problem. I need to recursively call a reified inline function, which is disallowed by the compiler. any workarounds? to avoid XY problem, here’s what my actual goal is: I am writing a custom transformer on data classes that does something based on annotated fields, and I want to be able to use these data classes themselves as fields.

https://kotlinlang.org/docs/native-gradle.html hello i'm trying kotlin native with gradle and this code seems to work smoothly until i add a package name in the

hello.kt

file and then the error

Could not find 'main' in '<root>' package.

happens. does anyone know how i can update the gradle file so it builds successfully again?

hello, i have another question on kotlin native and gradle. this is my current

build.gradle.kts

kotlin {
    linuxX64("native") {
        binaries {
            executable()
        }
    }

    mingwX64("native") {
        binaries {
            executable()
        }
    }
}

is this the correct way to define multiple targets? if so, how do i run gradle to compile for both platforms? there is an error when i run

gradle nativeBinaries

: The target 'native' already exists, but it was not created with the 'mingwX64' preset. To configure it, access it by name in

kotlin.targets

or use the preset function 'linuxX64'.

is there a trick to overcome clashing function signatures with different returns values?

fun TfFile.cert_request(configure: CertRequest.() -> Unit): CertRequest

fun TfFile.cert_request(configure: CertRequest.() -> Unit): PropertyDelegateProvider<Any?, ReadOnlyProperty<Any?, CertRequest>>

@JvmName

works only for case like

List<String

and

List<Int

and

@OverloadResolutionByLambdaReturnType

only with lambdas returning different values

I mean, give the function different names?

does anybody know why we need this verbosity?

Hello, I try to use ki-shell but no matter what I do, when I execute my code I get the following error:

ki-shell 0.4.6-SNAPSHOT/1.6.21
type :h for help
[0] :dependsOn <my library here>
[1] some.package.test()
ERROR Class 'some.package.TestKt' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler (Line_2.kts:1:15)

I even tried to compile a custom version of ki-shell with Kotlin 1.6.21 but nothing changed. My project is also compiled using Kotlin 1.6.21. May I ask what triggers the "pre-release" property of a compiled class? Thanks.

Hey I need for a coding challenge an IDE with Kotlin 1.3 support. How I get this IntelliJ Version?

Don’t know if this is the right channel to ask (apologies if not the case). Jackson annotation on an interface (to tell Jackson what implementation class to use during deserialization) cannot be used because the word “as” is a keyword in Kotlin and Jackson is using that keyword to specify the implementation class:

@*JsonDeserialize*(as = MyInterfaceImpl.class)

Is there a way to to solve this issue?

I have this data I want to get all employees with permanent addresses, I want to even get one address for each employee 🤔

val employees =
    listOf<Employee>(
        Employee(
            id = 1,
            listOf(
                Address(id = 1, isPerm = false),
                Address(id = 2, isPerm = true),
                Address(id = 3, isPerm = true)
            )
        ),
        Employee(
            id = 2,
            listOf(
                Address(id = 1, isPerm = false),
                Address(id = 2, isPerm = false),
                Address(id = 3, isPerm = true)
            )
        )
    )

I'm using spock for testing(it won't be changed) is it possible to make kotlin use@JvmStatic by default for generated methods? I know there are spring plugins that make classes not final by default. is there something like this for static methods?

Can override an extension function somehow? I guess not. 😕

does anyone have any experience with SQLDelight and/ jOOQ? I am building a UI for our java tool with Jetpack Compose. Looks like SQLDelight is pretty great but I think my Java devs would be more comfortable around jOOQ. Thoughts?

Hi there, looking to update an old react (kotlin) app I started on and I'm stuck on

useLocation() may be used only in the context of a <Router> component

no matter which block I put it in?

val App = FC<Props> {
  BrowserRouter {
    Routes {
      Route {
        useLocation() // ...

hello, i want to ask about kotlin jvm. after you compile it to java bytecode, is it possible to bundle it in such a way that computers without java can run it?

Is there a better way to build a map from 2 lists such that it's based on their order in the list? Currently, I'm doing

list1.zip(list2).toMap()

but it turns them into pairs in the process and I don't quite like that. Is there a neater 1-liner for it? I looked at associateWtih and associateBy but I can't seem to get them to work for this use case. Edit: Neatest one-liner I've found:

(0..list1.lastIndex).associateBy(list1::get, list2::get)

Can i use top level property/variable inside a class as top level functions

Is there a way to circumvent overload resolution ambiguity on the following two functions without giving the functions different names,

class Zipped<out T>(val value:T)

// function one
fun <T,R> Zipped<T>.map(mapper: (T)->R): Zipped<R> {
  // . . .
}

// function two
fun <T,R> Zipped<Zipped<T>>.map(mapper: (T)->R) : Zipped<R> {
  // . . .
}

fun main() {
  val zipped: Zipped<Zipped<Int>> = Zipped(Zipped(2))
  val result = zipped.map { "zipped value: $it" } // when calling this function?
}

Is this considered a bug or am I really required to specify that it's an

Int

and not a

Long

?

Hi. I'm probably missing some basic essential stuff, if so could someone please point me into a correct direction? I have a string

"aaa\"aaa"

. When I evaluate an expression while in debug and check the length of the string, then it shows it is 8. But checking the same in the scratch file - it shows length equal to 7. Why is it so? What am I missing?

why isn't this implicitly forced?

I’m using kotlin-faker to generate random instances for something similar to fuzz testing with json. I want to avoid empty lists and null values in the generated object, and am unable to wrangle it right. any tips?

I am tasked with convincing my team to adopt Kotlin. What are key features of Kotlin and its long term trend? Thanks

i have two gradle tasks,

./gradlew build

and

./gradlew run

. is it possible to specify

--console=plain

inside the

build.gradle.kts

file on one of them so i don't have to keep typing the flag?

Please anyone recommend a good course on SOLID principles for Kotlin

Are the docs missing a section about enums in Objective-C/Swift? https://kotlinlang.org/docs/native-objc-interop.html

Couldn’t find anything about how to use a

switch

statement from Kotlin/Native in Obj-C, since it converts Kotlin enums to a class, not an actual enum.