Can you get Ktor to work with Kotlin 1.3-M2? I've been trying to get it working, but it seems that extending an abstract class that uses

suspend

doesn't work right. Specifically I'm trying to use

ContentConverter

. I'm getting an

AbstractMethodError

.

one thing i was always wondering.. what does the number after -eap mean ? i guessed first that it might be the week .. is it just the internal build number that you decide to make public ?

should the 1.2.70-eap40-IJ2018.2-1 eap build work with the new idea eap build or will there be a IJ2018.3 version of it too?

I can't get non-experimental coroutines working with 1.3-m2. I always get

Class 'kotlinx.coroutines.Deferred' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler

. These are my dependencies:

ext.kotlin_version = '1.3-M2'
ext.kotlin_coroutines_version = '0.25.0-eap13'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
compile "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
compile "org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlin_coroutines_version"

Is

0.25.0-eap3

right here?

What does

you can simply call old suspend functions

in the 1.3-m2 release notes actually mean? I can not link against old coroutine based jars, cause they probably depend on classes in the old kotlinx-coroutines-core packages, right?

I just updated to Kotlin 1.3-M2 from stable, with latest Intellij 2018.3 EAP, and now Kotlin isn't detected at all. The IDE just says "Kotlin is not configured". And if I try to (re)configure the IDE says "No configurators are available". Anyone else ran into this (who knows how to fix it possibly)?

Also, it seems that I can't even uninstall the Kotlin plugin via the IDE (due to the new plugin UI maybe)?

does idea 2018.3 eap bundle kotlin 1.3eap? does that mean that its coming soon?

circling back, I had to explicitly add the eap repository in order to get the rc version of the jvm plugin via:

pluginManagement {
  repositories {
    maven("<https://dl.bintray.com/kotlin/kotlin-eap>")
    gradlePluginPortal()
  }
}

Just tried moving up to 1.3.0-rc-146, and it fails on a simple class that derives from a one property interface. 😞

error: no interface expected here
public final class Product extends NameProtocol {

I just updated to

1.3.0-rc-152

and now I get

Could not find org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.0-rc-152.

.. anybody else?

Looking at the new contracts api, the KEEP states that the metadata and semantics are stable. I was hoping to be able to add some contracts to library code, and let consumers take advantage of them. But surprisingly it seems like

@ExperimentalContracts

is transitive, forcing callers to opt-in even if they don't declare any contracts themselves. Is there a way to get this to compile?

@ExperimentalContracts inline fun <T> foo(block: () -> T): T {
  contract { callsInPlace(block, EXACTLY_ONCE) }
  return block()
}

fun main() {
  foo { } // error: this declaration is experimental and its usage must be marked with '@ExperimentalContracts'
}

I’m getting the following build error:

Error:Kotlin: [Internal Error] java.lang.IllegalStateException: Backend Internal error: Exception during code generation
Cause: Back-end (JVM) Internal error: Error type encountered: [ERROR : For SuccessOrFailure] (ErrorType).
Cause: Error type encountered: [ERROR : For SuccessOrFailure] (ErrorType).

Full error here: https://gist.github.com/sanity/e596fc3b5ff6b3f02f415fd9dc2e00d3 I’m using the latest 1.3 RC (this happens both with builds 57 and 80). Any ideas?

SuccessOrFailure

is something from the pre-release stdlib, it’s no longer there. Looks like you mixed up some versions.

see https://github.com/JetBrains/kotlin/releases/tag/v1.3-rc4

Is it possible to suppress experimental language feature warnings like

w: ATTENTION!
This build uses unsafe internal compiler arguments:

-XXLanguage:+NewInference

It prints this warning each time a KotlinCompile task is running. With many modules this is super annoying. I know what I’m doing, I want to test these feature. I don’t need to be reminded each time

What is the reason that

inline class

must be at the outer scope? Is that a temporary limitation?

class User {	
	inline class Id(val raw: String) // Inline classes are only allowed on top level
}

@Nikky I think this might be weirder, it’s an internal compiler error. One thing I’ve just noticed is that I can build my code with gradle, I only get that error when I try to build using Build -> Rebuild Project (Kotlin plugin version 1.3-M2-release-IJ2018.2-1)

@Nikky For reasons I don’t understand, updating to the latest EAP via Toolbox appears to have fixed it, at least for now. Thanks again.

Why? is the question I'm asking. At least in that sample case.

Did something change in 1.3 with anonymous classes(

object : SomeType

)? All of my code that's using them is not compiling for wiht 1.3

How to compare inline classes? My usecase. I have defined 5 `Int`s and an Inline class using Following.

inline class State(val state: Int)

And in my regular class I have a variable of the State using

Delegates.observable

. Whenever I try to compare two states, I get :

State cannot be cast to java.lang.Number

My sample comparision code looks like following.

this.state==State(1)

If I have

inline class ShortUser(val value: String)

and

inline class User(val value: String)

, and I want to be able to pass

ShortUser

into methods that take in

User

, is the only way to pass in

User(shortUser.value)

? (Haven't actually tried this. Just reading the inline class docs, and it looks like there is no other way)

And from the example:

inline class Name(val s: String) {
    val length: Int
        get() = s.length

    fun greet() {
        println("Hello, $s")
    }
}

Would it not be preferred to use

inline val length...

?

@Allan Wang i am pretty sure all functions on line classes are also inlined when possible, so specifying inline there seems redundant

I can access the boxed type through

val x:Any = InlineClass(0); x::class

but that's pretty hacky

📣 1.3.20-EAP1 is available! The build number is

1.3.20-eap-25

and it's available in the

kotlin-eap

Bintray repository and "EAP 1.3.20" IDE plugin channel. What's new: https://github.com/JetBrains/kotlin/releases/v1.3.20-eap-25 How to get it: https://discuss.kotlinlang.org/t/kotlin-1-3-20-early-access-preview/10748

my gradle build breaks in really strange ways when i upgrade to the eap. it seems that gradle keeps downgrading some kotlin libs to 1.3.10. (which seems to be a transient dependency of one of my dependencies) and then the build fails because the asm version is too low