kotlinlang #announcements

Can i suggest to have a closed channel that only JB people can write named “announcemets” where this kind of info will be posted. Currently it’s not easy to track what happens if you are away for some time.

sksk

09/29/2017, 10:17 AM

http://kotlinlang.org/docs/reference/multiplatform.html gives me 404 error

👍 1

rwachol

09/29/2017, 10:28 AM

there’s no multiplatform then

orafaaraujo

09/29/2017, 1:19 PM

Hello, everyone I've created a Twitter profile that posts a new tweet whenever a new Kotlin version is released https://twitter.com/kotlin_version

👍 2

karelpeeters

09/29/2017, 1:21 PM

Like this one? https://kotlinlang.slack.com/archives/C0922A726/p1506679391000249

mike_shysh

09/29/2017, 2:57 PM

In addition to my question, I see that gradle task ':copyMainKotlinClasses' is missing in 1.1.51

roman.belov

09/29/2017, 4:17 PM

@harmony Already fixed. All artefacts are available now and Kotlin 1.2 Beta is finally out. Welcome to give it a try!

🎉 3

roman.belov

09/29/2017, 4:19 PM

📣 📣 📣 📣 This time it’s an official release 😉 really, no kidding 😄 📣 📣 📣 📣

😂 8

K 12

trevjones

09/29/2017, 10:51 PM

Copy code

data class Foo(val foo: Int) {
    data class Bar(val bar: Int)
}

👍 1

jaguililla

09/30/2017, 11:32 AM

Make 4 PRs and win a shirt in Digital Ocean's Hacktoberfest (https://goo.gl/heoq39)! There are some Kotlin projects out there... Like Hexagon: https://goo.gl/JDnFav pick a task if you want to help me with the project 🙂

karelpeeters

09/30/2017, 7:01 PM

You can if you use reflection, but otherwise no. Instead consider adding a parameter for the constructor:

inline fun foo<reified T>(constr: () -> T) { ... }

. You might not even need the

reified

anymore.

Dalinar

10/01/2017, 10:01 AM

what exactly is copied in a copy() of a data class? just the properties declared in the constructor?

henrik

10/01/2017, 7:44 PM

More unnecessary code… 🙂

raulraja

10/01/2017, 11:30 PM

Is there a

gradle

task that will launch in the console the

kotlinc

REPL with the project classpath ready?

Paul Woitaschek

10/02/2017, 7:12 AM

@qwert_ukg What does that mean?

enleur

10/02/2017, 7:18 AM

Copy code

val (even, odd) = listOf(1.2, 2.0, 4.1, 6.0)
    .partition { it.isEven() }

karelpeeters

10/02/2017, 9:02 AM

Aren't you back at square one then?

pokkeli

10/02/2017, 2:54 PM

I am using the very latest Intellij IDEA Community EAP, Kotlin 1.2 beta 31, Gradle 4.2, and Java 9. I have a Kotlin JVM project. With Java 9 as a project JDK, running/building the project fails (at least occasionally): I get unresolved references to my own classes, which are defined in the very same project. I believe these classes are 100% Kotlin objects / singletons. I also receive zero unresolved reference errors in the IDE itself, only upon building. The only thing that seems to help, is to rebuild the whole project. Anyone else encountered this same thing? Is there a workaround - other than not using Java 9?

zealous

10/02/2017, 8:43 PM

@addingama have a look at https://github.com/edvin/tornadofx/wiki/Type-Safe-Builders#what-if-there-is-no-builder-for-the-control-im-adding

nulldev

10/02/2017, 9:02 PM

Is there any way to have a setter for a variable declared in the constructor? I have a data class where I must have a setter for one of the fields. Example:

Copy code

data class WTF(var name: String
                                  set(value) {
                                      println("This doesn't work 😞")
                                  }
                           )

Olekss

10/03/2017, 7:59 AM

Guys. I can't decypher deep meening behind run extension funciton which has the form of public inline fun <R> run(block: () -> R): R = block() ? What is deep design thinking behind this

geekasm

10/03/2017, 9:54 AM

I am developing web-server on top of ktor. want to use a good DI framework along with it. any recommendations ? kodein ?

arekolek

10/03/2017, 10:06 AM

I just posted a SAM-constructor related question to stackoverflow somebody might find interesting, or maybe knows how to answer: https://stackoverflow.com/q/46542037/1916449

Olekss

10/03/2017, 10:38 AM

@Czar I get the receiver version of run. But what is simple "run" which just executes block?

marstran

10/03/2017, 10:54 AM

I guess you could create your own extension function like this:

Copy code

fun <T1: Closeable?, T2: Closeable?, R> Pair<T1, T2>.use(block: (T1, T2) -> R): R =
            first.use { a -> second.use { b -> block(a, b) } }

You could then do

(Buffer() to Okio.source(file)).use { buffer, source -> ... }

Czar

10/03/2017, 12:10 PM

after

use

execution both first and second will be closed, so the object becomes unusable. I'm sorry for so many uses of the word 'use', but here I kinda have to 😄

dave08

10/03/2017, 12:18 PM

Any easy way to make a class implementing

operator iterator()

that returns a custom iterator that implements

operator hasNext()

and

operator next()

, to return a List? It seems that currently the only way is to make a mutable list and then

for (e in iterator) list.add(e)

...?

dave08

10/03/2017, 12:48 PM

@karelpeeters I guess you're right 😢

rocketraman

10/03/2017, 3:16 PM

Getting this error when trying to use the synthetic property "password" (i.e.

password = "something"

) in an

apply

for

SQLServerDataSource

which has a

setPassword

method:

Cannot access 'password': it is public/*package*/ for synthetic extension in '<dependencies of my-module>'

. Calling

setPassword

explicitly works correctly (Kotlin 1.1.51).

youtrack 1