Actually, I'll move this question to #intellij

Hi, Is there any good tutorial out there that teach the entire process of how to configure the support of kotlin-dsl in gradle.

My intellij v2017.2.5 community edition does not recognize kotlin DSL syntax in the build.gradle.kts. Anyone know who to configure the editor to recognize the kotlin DSL syntax?

Anyone here have an idea why I can't use an extension function after I've exported my APIs to a jar file, trying to use the jar in another project and I cant get it resolved despite the .class file that contains the extension function existing

How does

internal

translate in the JVM? Is Kotlin able to provide instructions so it’s distributed JAR includes the same restrictions?

Hi everyone, Is it possible (and if yes what is the best approach) of having classes with both package level visibility members and public members without internal and a new module?

public class Foo {
public void foo1() {}
void foo2() {}
}

public class Fee {
public void fee1() {}
void fee2() {}
}

I don't need it, but I'm using this to maintain compatibility with the previous utils, written in java (method was dpToPx then)

Hello, I am confused between kotson, klaxon, Gson, Jackson with Kotlin module for parsing JSON in Kotlin. Is there any recommendation/standard, usability issues. Asking for a new project. Where my JSON string might have missing data and I want to use immutable data classes. Anything I should consider before going with any one of those? Any comparisons? Performance issues? Any help would be appreciated. This looks like the right forum to ask.

I was thinking about something of Kotlin's inner workings, but reached a question: Shouldn't a Delegate follow the changes in the variable that defines how he delegates to? It seems that a Delegate Class always forwards to the same instance that it was created with. But it opens a possible misunderstanding: If I declare the delegated instance in the constructor as a var, shouldn't it change behaviour when the var changes? Or shouldn't a delegated instance always be a val, so it can't be changed? I think I prefer the first, as it would give the user more choice. Anyway, I did a Gist to exemplify the problem: https://gist.github.com/Megamiun/778234b1bb7c9bf3e9fceb6f25264ecd

This is a general wince why question, but has anyone been able to get IntelliJ to use the aspectj class weaver to weave kotlin bytecode? I have a gradle plugin that I'm working on that does it there. But various IntelliJ configurations I'm using don't seem to be weaving the kotlin class files. Here's the sample project incase anyone is feeling really generous with their time: https://github.com/JLLeitschuh/gradle-kotlin-aspectj-weaver

I have a name clash for a few different classes. Is it possible to rename it globally instead of needing to put

import foo.Bar as bBar

in all my files?

I am writing a paper for my language design course at uni, I was wondering if anyone had an opinion on Kotlin's best features

* Runs on JVM * Good Java Interoperability * Data classes * Null Safety * Smart cast

@robstoll what are you trying to achieve?

hi! I was using back-ticked method names with spaces in unit test when I came across a compiler crash (both for 1.1.51 and 1.2.0-beta-31). here’s a small example triggering it:

interface `I I` {}
val a = object : `I I` {}

result:

exception: org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Failed to generate property a
Cause: Invalid class name (must be a fully qualified class name in internal form): Line_0$I I
File being compiled and position: (1,1) in /Line_1.kts
PsiElement: val a = object : `I I` {}
…

is this a known issue?

Is there some way to profile kapt in gradle? I would like to see which annotation processors take the most of the time to run

you could do it in java this way for reference

public @interface SqlEmbedded {
    public Class<? extends ResultSetMapper> using()
        default NullResultSetMapper.class;
}

what is best practices for data model builder??

Anyone got a cheap trick to access the top or bottom bytes of a short

Why is there no unisgned short in kotlin

Hi, Another useful kotlin support is the property delegation. Look at by lazy. Kotlin provides out of the box nonNull, lazy, observables. Take a look at kotlin.properties.Delegates. Moreover I saw recently in the kotlin dsl for gradle: by extras and by tasks. Delegation and property delegation it’s one of kotlin main features IMHO. Kind regards Antonel

just going through the katas(currently at Collections/Sums[https://try.kotlinlang.org/#/Kotlin%20Koans/Collections/Sum/Task.kt]. i feel like 'sumByDouble{ it.someDoubleType}' is somewhat out of place. Why not just leave it at 'sum{ it.someDoubleType}' ?

was using parentheses

()

for higher order functions(

map

& co.) discussed over the eventual use of braces

{}

? seems like there could have been a nice opportunity to be less java-ey

@dave08 There's no one-liner for that, but you can implement this operation with the help of `associateBy`:

fun <F,S,K> setPartition(
				first: Iterable<F>,
				second: Iterable<S>,
				firstGetKey: F.() -> K,
				secondGetKey: S.() -> K
		): List<Triple<K, F?, S?>>
{
    val firstByKey = first.associateBy(firstGetKey)
    val secondByKey = second.associateBy(secondGetKey)
    val allKeys = firstByKey.keys + secondByKey.keys
    return allKeys.map { Triple(it, firstByKey[it], secondByKey[it]) }
}

it's Sunday so forgive the laziness, but here's what I thought of

val a = mapOf("a" to 3)
	val b = mapOf("a" to 4, "b" to 5)

	val unionKeys = a.keys.union(b.keys)
	val merged = hashMapOf<String, Pair<Int, Int>>()
	for (key in unionKeys) {
		merged[key] = Pair(a[key]!!, b[key]!!)
	}
	println(merged)

replace your

[code]

with ``` 🙂.

Hi, do you know a good ORM framework for Kotlin ?

Android list of Best open source projects of Intermediate level to study and learn from in , kotlin ?

@stantronic Does IntelliJ work with Android? (Using Android Studio is not an option)

@khanhbkqt Yes I use kotlin with Mockito - what error do you get?