there is no rhyme or reason to how you hit someone with stackoverflow emoji, guys

That's a

Java

emoji...

facepalm

😁 okay deservwd

override fun isTo1Hz(from: InputStream, cb: Consumer<Int> = {} ): List<List<EngDataStructure>> {

how do I do what I mean, an optional callback? also will Int be resolved as Integer for java consumers?

yes, or

(Int) -> Unit = {}

probably best to use

Consumer

to avoid

return Unit.INSTANCE

nonsense

so how do I write that? what's the syntax?

https://twitter.com/kotlin/status/1294289606360391680 Waiting for Kotlin 1.4 🕑? Here’s something to make your wait more pleasant this weekend. Read the transcribed talk from our great friend @sdeleuze and see how @springframework supports Kotlin. A chat about love, coroutines, and Spring Boot: https://t.co/x0zmANbcFo Twitter

Im musing on how to write some helpers for dealing with sensitive data, and I’m taking some inspiration from rust’s

unsafe

blocks. Curious if there would be a way with lint in UAST to error if any property or method with some annotation is called outside of some block like

data class Foo(@Secret val password: String)

foo.someSecret

would error but the following is ok

omgAuditThisPls {
 foo.someSecret
}

This is a contrived example, because foo.toString() could leak secrets but that can be handled by another abstraction

Also, I know we can define function declaration site contracts, but is there a way to define function call site contracts? e.g. to ban the usage of the function from loops?

is it possible to abstract the

copy

away, and have its parameters on the reducer?. i.e.

setState {
	foo = "bar"
}

Sorry for my bad englinsh. 😂

The confusing thing is that there is a function called firstOrNull.

Or is that simply impossible?

https://twitter.com/kotlin/status/1295422381746532355 🥳 Kotlin 1.4 is released! It brings the speed and quality improvements that were frequently requested by the community. On top of that, you can check out SAM interfaces, along with other exciting features! Try the new Kotlin 1.4. Details here ➡️ https://t.co/LZpHfWxF2X https://t.co/HKaVgteBZG Twitter

Patently I have become top 1 Kotlin bug reporter according to Kotlin 1.4 release log 😄 🎉 and yes - I have twitter 😉

Hello everyone, I am new to this group joined today.

Hey, does anybody has slides on Kotlin 1.4? I'll make a small presentation for my team tomorrow

https://twitter.com/kotlin/status/1296043825111212032 An inspirational #KMMstory from our friends @careem about their journey to Kotlin Multiplatform Mobile. See how they benefit from sharing code between mobile platforms, using Kotlin with remarkable results to simplify the lives of thousands of people. https://t.co/OYZDS6f8TX Twitter

https://twitter.com/kotlin/status/1296121938579017729 You can use Kotlin to work with Datalore. Check out this tutorial for more information about how to get started. Twitter Watch our first Datalore Getting Started Tutorial! Datalore is an Online Data Science Notebook with smart coding a… https://twitter.com/i/web/status/1293911240121520128 Twitter

https://kotlinlang.slack.com/archives/C0922A726/p1597613790150500 Turns out it was a bug.

Anyone know if there is version on the roadmap for a stable release of unsigned types?

Greetings! Sorry for barging in and immediately needing help :( I'm also not sure whether to post it here or in the reflection channel, but I'm hoping to solve the problem without reflection if possible. Short version: I have a collection of POJO's that are linked together in such a way:

A {
    value1
    value2
    B {
        value3
        ...
    }
}

etc, done a million times before. My task is to create the following: an external party comes in with an XML definition of which entities/values they want to receive, a la GraphQL / ProtoBuf. In addition to this, we need to create "standard" messages with predefined schemas, so not only do the external party give XML, our programmers also need to define some of those messages. I want to do this last part type safe, so my first thought was a Kotlin DSL. I've got most of it working, it's kind of looking like this:

aScope = scope(AModel) {
    addField(AModel.value1)
    addEntity(BModel) {
        addField(BModel.value3)
    }
}

object AModel {
    val value1 = field<String>()
    val value2 = field<Int>()
}

This all works fine already, but I want it to be type-safe. For example, right now this is legal:

aScope = scope(AModel) {
    addField(BModel.value3)
}

To add to the complexity, some entities have common fields, so like a good OO monkey I gave the Model objects abstract superclasses with more fields in them, which is nice, because you can do AModel.commonField and BModel.commonField and they're different unique fields :D I think to accomplish this, I have to encode the enclosing Model class on a field somehow. Then I could do something like

fun Scope<ModelClass>.addField(field: Field<ModelClass>) { ... }

but I can't figure out how to do this without being extremely verbose like

object AModel {
    val value1 = field<AModel, String>()
}

and even then I can't get the common fields to work, because I can't seem to pass the actual Model class upwards to the abstract superclass. Any advice is welcome, and sorry for the book! Your help is much appreciated! Kind regards, Tijmen

Is there a better way to glob files in Kotlin than this snippet I found by googling?

//Object a matcher object from the supplied Glob pattern
    val matcher = FileSystems.getDefault().getPathMatcher(glob)
 
    val path = Paths.get(start)
    //Walk the file system
    Files.walk(path)
            //Filter out anything that doesn't match the glob
            .filter { it : Path? -> it?.let { matcher.matches(it.fileName) } ?: false }
            //Collect to a list
            .collect(toList())

Not only is this code ugly, but it also seems incredibly inefficient to walk every file and filter, compared to how globs can actually be done. I don't have much faith in this snippet anyhow because there's some oddities but it's the best I'd found.

Hey. Not sure if here's the correct place to ask. Is there a command search utility in Android Studio (JetBrains IntelliJ) like that of Visual Studio Code? If yes, how should I invoke it?