is there any way of applying the kotlin plugin in every module without the need to apply plugin: ‘kotlin-android’ ?

@restioson Nothing prevents you from writing project/library with serializable coroutines -- all the core implementation classes (state machine impls) are designed to be serializable (they even implement java.io.Serializable marker for what it worth). As long as locals of each coroutine are serializable, you are good to go. Btw, what do you what to achieve?

hello… is there a way in Kotlin to detect when an instance of a class has been deallocated?

I would like to have a block after elvis

val bar = foo ?: {
    println("foo is null!")
    return // return for block? return for what??? I don't know.
}

Is there any discussion about this? or no one interested having this feature? I know Kotlin can do this but still I want to have a block after elvis.

val bar = foo ?: return println("foo is null!")
val bar2 = foo2 ?: return someReturnUnitMethod()

I would format it something like:

words.map { word ->
        findMatches(word, wordsSet).map { "$word -> $it" }
}

or

words.map { word ->
        findMatches(word, wordsSet)
                .map { "$word -> $it" }
}

Hi everyone! I want to translate the book "Kotlin in action" into Russian and publish on my website. Can I legally do that?

val z: Int

    init {
        fun x() {
            z = 2
        }
        z = 1
        x()
    }

Is this already reported? Shouldn't compile imho.

I have just finished the Treehouse's Kotlin for Java developer course. Now reading the reference docs. I plan to switch full time to Kotlin for my future Android app. 🙂

Is there a way to simplify

return if (resource != null) something(resource) else null

using some of the null-safety operators?

Is there a slick kotlin way of handling this? I have a series of cmdline args like "--root /home/foo --root /other/dir --algo MD5" and I want to turn them into a Map<String,List<String>>

is it possible to somehow hide overridden functions from subclasses? My problem is that a method of my superclass has a name collision with

bindView

from the kotterknife library.

Hi All, how can I define a top-level typealias that can be used by other classes and functions from various packages? For instance I want

typealias Dict<V> = Map<String, V>

to be made available to other classes

Is there an equivalent of https://www.rust-lang.org/en-US/friends.html for Kotlin?

if it's interesting of somebody i can extract it from project and push to github

And if you decompile code from your first question, you will get answer why variable 'map' is not initialized. Delegates are set before map. I am not sure why.

show your money class?

I have following case to model. There are devices, all devices have some common set of properties, the rest of the properties wildly differ. I thought about using a sealed class hierarchy for them. E.g.

data class CommonProperties(/*properties here*/)
sealed class Device(val commonProperties: CommonProperties)
data class Type1Device(commonProperties: CommonProperties, /*other properties*/): Device(commonProperties)
//...

You probably see the problem:

Data class primary constructor must have only property (val / var) parameters

. Any suggestions on how to improve the design of my hierarchy?

is there a way to make a class field as a java static, I mean 1 general field for all instances

@tipsy if you had at least a URI object, so you can move port/host/path/queries onto it

is there any shortcut/tool to make it to what it was without removing the extra bit and using the auto-import again?

what is the return value of a method

fun error(field: String, value: String)

is it Nothing?

@bdeg no, it gets compiled into normal JVM bytecode

This was actually the first thing I liked about the language. As far as I know it’s not possible to

data

class to do something like this. And for me it’s actually a good thing, because the bean you use to model your JPA entity should stay inside the JPA module. You have to convert it to a model that makes sense in your domain, and at that point, you can actually use a data class that doesn’t rely on those necessities given by the ORM framework you are using.

@karelpeeters it is not Serializable indeed but that's not the issue. I tried rolling my own Serializable observable delegate and was getting the same error. The problem seems to be that where the delegate is used Kotlin generates some synthetic property containing all the delegated properties and that's what's not serialized correctly. I gave up and went another route

Hello guys, I would like to have an advice: the boss of my boss told me to start migrate one of our microservices to Kotlin. His idea to study the migration so that could be a paper/presentation, meaning that we need to measure stuff (cost of migrating a service, the language learning curve, developers opinion etc..). Did you see something like this around from which I can get inspiration? (not copy and paste it, rather understand a methodology to do such analysis)

Hi, I was wondering if is there a way to create optional methods on interfaces like with switf?

Hi, just wanted to know if i understand kotlin-native use cases correctly. Say, i want to build a microservice with SparkJava and run some native code via c interop in response to get requests? Is it possible to do so in one Kotlin-based project?

MyClass::class.memberProperties

should be what you want.