Kotlin version: 1.3.20, Coroutines Version: 1.1.1, Intellij: Both stable 2018.3.3 and 2019.1 EAP

Is it possible to use the expect/actual keywords in a single-platform project to select which modules get loaded at compiletime? I’ld like to have an “Interface” module filled with

expect

declarations, and one or more “Implementation” modules that utilize

actual

Builder pattern comes to mind here (in addition to constructor)

https://twitter.com/kotlin/status/1166349662883700736 To create a map from an iterable or a sequence, use ‘associate’ function and specify how to build a map entry from each element. If an element becomes a key, use 'associateWith'. If it becomes a value, use 'associateBy' instead. https://t.co/tfcftbzvi0. #KotlinTips https://t.co/MULKUBzJoe Twitter

Can I send a message conditionally in Kotlin? e.g. “if this type responses to foobar, send foobar to it”?

Hi, can anybody tell me how to configure LambdaFunctionNameResolver to read AWS Lambda function name from env instead of specifying it hardcoded?

Hi, i'm trying to run a really basic kotlin js app in the browser using the newest kotlin-js gradle plugin, but instead the webpack server is loading an html page that says,

Cannot GET /

. Has anyone had this same problem, or found a solution? This is my `build.gradle.kts`:

plugins {
    id("org.jetbrains.kotlin.js") version "1.3.50"
}

repositories {
    mavenLocal()
    jcenter()
}

dependencies {
    implementation(kotlin("stdlib-js"))
}

kotlin.target.browser()

And here is my app:

fun main() {
    println("Hello world")
}

https://twitter.com/kotlin/status/1167003598410043392 Ready for round 2? The next Kotlin Heroes coding contest is coming up on September 7th. Forever forge your name in history as the undisputed champion of the String literal and win big prizes. Get your registration in now! https://t.co/HmgJV9MfFZ Twitter

Kotlin Heroes programming contest, round #2 We are excited to announce the second round of our Kotlin Heroes programming contest taking place on the Codeforces platform. JetBrains is working once again with Codeforces to promote Kotlin in the competitive programming community, as well as to give … Continue reading →

Hi, is there anybody who configure app via com.uchuhimo.konf.Config?

I have HOCON config file:

{
  app {
    function = "my-function"
  }
}

and following spec config:

object AppSpec : ConfigSpec() {
  val function by required<String>()
}

How can I get value of function ("my-function") programatically? At the moment I have:

private val appConfig = Config { addSpec(AppSpec) }
        .from.hocon.resource("app.conf")

Does anyone know of a kotlin library for Recurrence rules that works with java.time?

https://twitter.com/kotlin/status/1167437010467880961 You can not only navigate to functions but to the declaration of operators as well. #KotlinTips Twitter

seems like this was not on any issue, so i opened one: https://youtrack.jetbrains.com/issue/KT-33630

Did something change with handling of visibility of internal methods in tests in 1.3.50? I have working tests in 1.3.41 and they break with

Cannot access 'method': it is internal in 'Class'

in 1.3.50 (Both JVM/JS) It breaks in a gradle run but in the IDE it seems to be green.

is there something like a

ByteChannel

(kotlinx.coroutines.io) but without the capacity limit (4096)? i need a channel that i can write an unspecified number of bytes to so i can later easily convert it to a

ByteArray

Why don't Kotlin Heroes contest in CodeForces support Kotlin version 1.3.50?

I’ve got a Pair<String, String?> Is it possible in a sequence to filter out pairs where the right part is notNull while being able to tell the typechecker that this implies only Pair<String, String> are now left?

RLY? 😁

I'm trying to tell configure kotlinNodeJsSetup not to download node, because it downloads a broken version of something. I found the property, but I haven't figured out yet how to configure it...any pointers would be appreciated https://github.com/JetBrains/kotlin/blob/master/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/nodejs/NodeJsRootExtension.kt#L32

I am very sorry to post pics but I am on mobile and have no other way to share code atm and the thing that happened to me boggle my mind

I have such class

IMG_20190903_175402.jpg

How on the earth is this possible?

IMG_20190903_175435.jpg

https://twitter.com/kotlin/status/1168946784451932161 In Foo::bar, bar can also be an extension to Foo. Like in Char::isLetterOrDigit. #KotlinTips Twitter

heh, I wrote that exact code just the other day, turned it into an extension function

String.isAlphaNum()

HI evey bode

What is the equivalent of this is kotlin, the static inner class. I am using companion object but test doesn't see.