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Poor example, but can i somehow use

this

reference in

lazy { }

scope for extension val ? Something like that:

val String.something by lazy { "$this$this" }

Hi guys! Do you see a way to reduce this?

val myList = listOf("A", "AA", "B", "BB")
val aIndices = myList.mapIndexedNotNull { index, str -> if("A" in str) index else null } // 0 and 1

Any kotlin team members here? The kotlin project has a super nice changelog on every release. Any tips on how to avoid merge conflict hell with everyone updating changelog.md with their PRs?

Hello there! I'm looking for a coach to teach me Kotlin and work on real projects. I have basic knowledge on Kotlin, Java, Html, Css and Js.

Hi Devs, how can I implement Material You in android. Kindly guide me

What are your thoughts on C# out variables? https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/out-parameter-modifier

is there any std fun on Lists, than when getting by index, if the index is greater than size, it will go back to zero? For instance, size: 3, get(4) will be the same as get(0)

Weird problem: I can't create new projects anymore (IntelliJ IDEA 2021.2.2 RC). When I disable the Kotlin Plugin (212-1.5.30-release-409-IJ4638.7), it works again.

What do you think this thing is?

I’m curious. Is there a compiler plugin that supports automatic generation of

equals

,

hashcode

,

toString

,

copy

, and others? Some things generated by

data class

are not what I want, and even it only generate properties in the primary constructor

is there an extension function for confirming a lookup of an item in a list? e.g.

list.firstOrNull { it is MySealedClass } != null

Is it possible to create a placeholder function or template (or anything else) that will be replaced by the result of its code later on? We need a temporary conversion function, let's say

fun f(x: Int) = x * 15 + 30

so if we type

f(10)

in our code would be replaced with

180

later on (or even instantly). Not sure if it's ok to ask here, it seemed to me too random of a question to ask anywhere else. Edit: Even if it's possible somehow with the

@Deprecated

annotation, let me know.

Is there a way to let classes visible in multiple modules? The

internal

modifier is only visible in a single module, this is sometimes not in line with my expectations.

Is there any noticeable difference between java17's sealed class and kotlin sealed class. ?

Found an unprofessional code comment the other day in the EFL source code (was trying to figure out how to do the efl_ui_win_autodel_set function so it is accessible from the Kotlin side). Below is the code comment (part of the comment has been censored):

/* FIXME: what the actual ****. */

This comment is in the Efl_Ui.h file on line 184 (part of the libefl-all-dev v1.23.3-8 Debian Package).

Regex is still a pain for me, I need to match any whitespace outside double quotas, how can I match the first two here?

What is an appropriate channel to discuss and get tips for dealing with customers resisting adoption of Kotlin?

has anyone tried Kotlin shell? for some reason im not seeing autocompletion, not sure if i need to do something to enable

Which are the best tools to generate document in kotlin ?

so... 1.6-M1 is out

ngl, did not expect that...

https://genki.world Built with Kotlin/JS 😄 Had to write almost no JavaScript or TypeScript 🎉 🙏 Shared code between front-end and back-end. (We’re looking for a great Kotlin dev 👀)

What is K2 compiler?

Follow up to my previous question regarding

out var

in C#: What do you think about partial classes? They allow you to spread a class declaration over several files, which are merged together on build. Do you see any good applications for this? Could you imagine it in other languages?

i have this function:

inline fun <reified T: FeatureSet> get(clazz: KClass<T> = T::class): T?

when i call it like so

val a: Any? = foo.get()

i get the class

FeatureSet

which is abstract is there any way to forbid this syntax other than crashing at runtime ?

What is your favorite logging library or framework for Kotlin in backend? I see

slf4j

a lot in Java but I’m not sure if there is a better solution for Kotlin specific.

Hi everyone. Do you have some advices on courses/books related to: • Kotlin for iOS (Swift) developers • Kotlin Multiplatform for iOS developers Thanks!