Hello I have a question about auto-formatting, Why is it that we get this uneven indentation in the following situation(where `a`’s indentation is smaller than the rest?):

val myVal = (
    a.size +
        b.size +
        c.size)

Is there a way to change klint settings to align it automatically? I would prefer all to be offset at the same level. If there isn’t maybe someone can explain why indentation the way that it’s working now is better?

Hello there, I have a question regarding annotations. What is the difference between

object Test {
  @get:Composable
  val primary: Color get() = TODO()
}

and

object Test {
  val primary: Color
  @Composeable
  get() = TODO()
}

Compose seem to be happy with the later and not with former. I though these where same. Anyone?

How to debug in object within intellij? break points does not seem to stop in it thanks

Is there a way to to associate an enum with a sealed class implementation? Lets say you have a generic enum accessible in your entire project (in my case I'm working with types of mental health care) and throughout your project, sometimes, per type, we need a slightly different implementation. Currently I have an Enum with Type1, Type2 and Type3, and then a sealed class with an implementation for every type. Now I have a map, in which I would like to give a key (enum) and then get back the specific implementation. However, I cannot guarantee that if you call the enummap with type1 key you get a value that represented type1 value

What is

R

supposed to be set by default on this snippet?

Is there an equalant way to convert this small code in RxJS to Kotlin flow I'm not really getting the way in which this java script convert the click events to an array in the map.

var button = document.querySelector('.button');

var label = document.querySelector('h4');

var clickStream = Rx.Observable.fromEvent(button, 'click');

var doubleClickStream = clickStream

  

.bufferWhen(() => clickStream.debounceTime(250))

  

.map(arr => arr.length)

  

.filter(len => len === 2);

doubleClickStream.subscribe(event => {

  

label.textContent = 'double click';

});

doubleClickStream

  

.delay(1000)

  

.subscribe(suggestion => {

    

label.textContent = '-';

  

});

I ask here because it seems like a very basic question... What can I do so that my compiled Windows EXE does not have the name "POSIX WinThreads for Windows" but a one I assign? What property do i need? This is my build.gradle.kts

plugins {
    kotlin("multiplatform")
}

kotlin {

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

tasks.withType<Wrapper> {
    gradleVersion = "7.2"
    distributionType = Wrapper.DistributionType.BIN
}

Hello everyone, I tried the reified feature of Kotlin and was suprised, that my primitives becomes boxed. Wouldn't it make sense with inlined reified functions to have monomorphization as language feature? Here's a little example:

fun main() {
    val value: Int = 2
    showValue<Int>(value)
}

inline fun <reified T> showValue(value: T) = println("$value")

The decompiled Java shows that the primitive int will be boxed into an Integer. And the function-signature has an Object as parameter-type. I think, although the reified function will be inlined, that the use of primitives, or whatever object for T, stays the same, because of inlining. Is this possible? Thank you

a library I am using has a suspend function, I am wondering how can I get a value out of that function without actually making my function suspended?

Is there any difference between

is

operator and class comparison?

sealed class MyClass {
    object ONE : MyClass()
    object TWO : MyClass()
}

inline fun <reified T> List<MyClass>.findClass(): T? {
    return find { it is T } as T
}

fun <T: Any> List<MyClass>.findClass(clazz: KClass<T>): T? {
    return find { it::class == clazz } as T?
}

can anyone point me to how to use the

Deprecated

annotation

ReplaceWith

when the argument is a receiver function type?

@Deprecated
fun factory(initializer: Builder.() -> Unit): Type = Builder().apply(initializer).build()

I don’t see it at all but what about nesting related functions? instead of having a lot private functions that are called from only one place those functions can be nested inside function that actually need them. make them lambdas also works… what are your thought/experiences?

Could anyone point me towards a method/library for handling navigation within Compose for Desktop?

Any good articles describing wrting your own DSL? I know there is a good book out there but I have too much books on my TO_READ list already

Hey, is there a way to generally reference the value inside a value class? I'm trying to use type-safe database ids, and therefore I need a column adapter

class BusinessMessageIdColumnAdapter : ColumnAdapter<BusinessMessageId, String> {
    override fun decode(databaseValue: String): BusinessMessageId = BusinessMessageId(databaseValue)
    override fun encode(value: BusinessMessageId): String = value.value
}

for every type of id, which is annoying I know I could get it via reflection, but .. probably looking for a "hack" like this (the enumValues function)

@Suppress("FunctionName") // Emulating a constructor.
inline fun <reified T : Enum<T>> EnumColumnAdapter(): EnumColumnAdapter<T> {
  return EnumColumnAdapter(enumValues())
}

Hey, Have a question: I am using MVVM pattern in the app & my approach is: After button click, open a new fragment/class, call viewmodel, call APIs from the server (usecase, repo & repo impl part), and the result would we shown to UI (fragment) after observing the data. So is there any way that after button click, call the API and based on the response of the API, show updated UI in the fragments. Does anyone know how to achieve this kind of behaviour in our android application?

why Idea is converting a functional java interface with the same

@FunctionalInterface

in the first case and

fun interface

in the second case here? What's the different between the annotation and

fun interface

?

Hello everyone this is my first question in slack i.e I want to perform some operations on data class fields before accessing them to UI. For ex from Broadcast receiver I am passing battery temperature to the data class but the passed temperature format is not required by UI so i want to add logic to convert temperature from kelvin to celsius and hide the kelvin field from UI.

data class BatteryProfile(
    private val _temperature: Int,
) {
    val temperature get() = logic to convert _temperature from kelvin to celsius

}

So i applied the above solution but i am feeling it is not good way also I have not seen data class primary constructor field as privete in any example. Please tell me if it is correct way or if wrong so how to achieve this.

hey everyone so i was trying to add a java(ant) proj to a kotlin(gradle) proj as a subproj so that i could import it in some Kotlin class? The current file structure is something like this:

.
├── build.gradle.kts
├── src
├── settings.gradle.kts
└── JavaProj(ant)
    ├── ant.settings
    └── build.xml

i hope i could make this file stucture clear. but the issue is i could not import the java proj in the kotlin. I think its something realted to including the proj in settings.gradle.kts but searching stackoverflow wasnt enough. Is there something else i ned to do as well while importing another subproj?

Is there a common ancestor for

String

and

Char

?

When creating generic function what is the difference between

*fun* <T : Comparable<T>>

and

*fun* <Comparable<T>>

?

In a when block I have a lot of code like that:

"-" -> if (aggregate is Minus) Minus(*aggregate.expressions, nextExpression) else Minus(aggregate, nextExpression)
                        "+" -> if (aggregate is Plus) Plus(*aggregate.expressions, nextExpression) else Plus(aggregate, nextExpression)
....

I wanted to make that easier, but i am failing. My Idea was something like this:

private inline fun <reified T> myIdea(aggregate: InfixExpression, nextExpression: Expression): T = if (aggregate is T) 
            T(*aggregate.expressions, nextExpression)
        else
            T(aggregate, nextExpression)

using the Type T as a Constructor does not work. Any advice?

Hi Guys, any recommendation for GraphQL client library?

In kotlin for now fun <T> T.foo(block:(T)->Unit):Unit = block(this) here type parameter T is nullable why not make it not-nullable implicitly?

What’s the difference between these two ways of exposing MutableStateFlow as StateFlow?

private val _data = MutableStateFlow(0)
1. val data: StateFlow<Int> = _data
2. val data = _data.asStateFlow()

In other words, what does

asStateFlow()

do?

Is this normal? The url https://plugins.gradle.org/m2/org/jetbrains/kotlin/kotlin-gradle-plugin-api/1.5.31/kotlin-gradle-plugin-api-1.5.31.pom redirects to https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-gradle-plugin-api/1.5.31/kotlin-gradle-plugin-api-1.5.31.pom and the SSL certificate on jcenter.bintray.org has expired. I can't build any Kotlin project.

How come Kotlin contracts are not working anymore? These have been working fine a few months back.

Hi! How do I merge two JsonElement objects into one? I have

{"name": "Foo"}

and

{"age": 42}

and want to get

{"name": "Foo", "age": 42}

object.

Why aren't

data

and

inner

modifiers to

class

compatible together?