kotlinlang #announcements

I just updated my IDE plugin (Android Studio 3.5.0-beta04), plus my project to Kotlin 1.3.40, and I am now greeted with this Gradle sync failure (stopping daemons and restarting didn't help):

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Unable to find method 'org.jetbrains.kotlin.gradle.dsl.KotlinTargetContainerWithPresetFunctions$DefaultImpls.jvm$default(Lorg/jetbrains/kotlin/gradle/dsl/KotlinTargetContainerWithPresetFunctions;Ljava/lang/String;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)Lorg/jetbrains/kotlin/gradle/plugin/mpp/KotlinOnlyTarget;'.

I upgraded IDE plugin from last 1.3.40 EAP, and last project Kotlin from 1.3.31. Reverting the project to 1.3.31 works (IDE plugin still 1.3.40) (Reported here: https://youtrack.jetbrains.com/issue/KT-32077?project=kt)

user

06/19/2019, 4:22 PM

https://twitter.com/kotlin/status/1141380644485906434 Kotlin 1.3.40 released! typeOf() for reified type reflection, compile-time trimIndent, and trimMargin, external annotations in IDE, combined test report for multiplatform projects, new Gradle plugin for Kotlin/JS, faster Kotlin/Native memory management https://t.co/Totr4GUdYB Twitter

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🎉 12

Bob Glamm

06/19/2019, 4:23 PM

Apparently IntelliJ can see into the future because I got the prompt to download the Kotlin plugin update 20 minutes ago

🙂 4

user

06/19/2019, 4:53 PM

Kotlin 1.3.40 released We’re happy to present the new release today, Kotlin 1.3.40. In addition to the quality and tooling improvements the main focus for this version has been on: Gradle support for NPM, Yarn, and Webpack for Kotlin/JS Test runner improvements for … Continue reading →

🎉 25

K 17

mathew murphy

06/19/2019, 9:49 PM

Is this true?

mathew murphy

06/19/2019, 9:49 PM

My IDEA doesn't seem to recognize kotlinx.serialization imports.

mathew murphy

06/19/2019, 9:50 PM

I have plugin 1.3.40-release-IJ2019.1-1

louiscad

06/19/2019, 9:52 PM

@mathew murphy That's true only for the Gradle plugin. You still need the library dependency.

camdenorrb

06/20/2019, 2:56 AM

Question, can we not make using an experimental api without an annotation a compile time error? 🤣

GauthierPLM

06/20/2019, 5:10 AM

Is there any plan to update the documentation so we can learn easily about all the gradle plugins available? I did not work with Kotlin for a while and feel like I missed many things. Reading all the blog posts seems a bit long to get in touch with the new things. Another thing I found missing is

kotlin.parallel.tasks.in.project=true

which I could not find in the doc.

user

06/20/2019, 11:53 AM

👍 2

Yan Pujante

06/20/2019, 3:30 PM

I have successfully upgraded my (small) multi-platform ktor project to latest kotlin 1.3.40 (ktor 1.2.2). Everything works as expected (I swapped my shutdown hook (https://github.com/ypujante/jamba-quickstart-server/commit/6244e9054043c4d008eb3f268be087f8d3e87b98) with the experimental one and it seems to work fine).

stefanscheidt

06/20/2019, 8:16 PM

Hello. I just installed Kotlin 1.3.40 via SDKMAN! and get a ClassNotFoundException: org.jline.reader.LineReaderBuilder when I try to run the Repl via kotlinc-jvm.

stefanscheidt

06/20/2019, 8:16 PM

I can not reproduce with 1.3.31 (via SDKMAN!).

stefanscheidt

06/20/2019, 8:19 PM

Ah, there is already a bug ticket: https://youtrack.jetbrains.com/issue/KT-32085

☑️ 3

Ifvwm

06/21/2019, 7:29 AM

I just copy my a.kt to a new directory, and I open it with IDEA, now it can not run, it need run configuration, what is that?

Alexjok

06/21/2019, 7:52 AM

Hello! How i can remove all elements from list except duplicates?

user

06/21/2019, 9:30 AM

https://twitter.com/kotlin/status/1142001713177681920 Any object can be an argument of

when

https://pl.kotl.in/Hk7UBNQ6m

https://pbs.twimg.com/media/D8sczopXYAELc0l.png▾

Twitter

Ifvwm

06/22/2019, 3:28 AM

why this t.v is not resolved?

Ifvwm

06/22/2019, 12:23 PM

a subclass or superclass of Int?

🚫 5

Jan

06/24/2019, 9:49 AM

how_come_my__Deprecated_ReplaceWith_doesn_t_replace_the_parameter_.kt

Joan Colmenero

06/24/2019, 3:52 PM

It just removed everything from the project but

Gradle Scripts

Alex Spence

06/24/2019, 5:13 PM

I'm trying to work with kotlinx serialization. It uses the attribute

@Serializable

I want to wrap the kotlinx serialization functionality with a Serde for Kafka streams. And I want to build a generic JsonSerde<T>

Alex Spence

06/24/2019, 5:14 PM

JsonSerde<T: Serializable> doesn't work

Alex Spence

06/24/2019, 7:48 PM

I have a class MetricFilterValue<T> - and I'm basically building it from parsed JSON. Running into an issue where I need to check if the value submitted is T

Alex Spence

06/24/2019, 7:49 PM

Seems I can do this with refied Type, but I can't seem to figure out how to use the class type as refied

Alex Spence

06/24/2019, 7:50 PM

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data class MetricFilter<T> (val filterId: String, val defaultValue: T? ) {
    fun createValue(value: Any?): MetricFilterValue<T> {
        val result: T?
        result = if (value == null) {
            defaultValue ?: throw MetricFilterMustBeSetException(filterId)
        } else {
            if (value is T) {
                value
            } else {
                throw InvalidMetricFilterValueTypeException(filterId)
            }
        }
        return MetricFilterValue(this, result)
    }
}

Alex Spence

06/24/2019, 7:50 PM

I have an error on

(value is T)

due to type erasure