aren't extension functions a forward compatibility hazard? e.g. you add a function to a class and the lib adds the same method with a different behavior later on. Now your code breaks

you could try - https://www.udemy.com/hello-kotlin/?couponCode=FREEFORFB&siteID=i.IXi5qsT7c-PSoYxmo7LKAqy9J7i2ZM8w&LSNPUBID=i*IXi5qsT7c - for free today

@Amir you can also run step by step exercises in the Kotlin track of https://exercism.io/

Is there any channel for #buck to discuss following things? There are companies adopting okbuck in their android build system https://stackshare.io/stackups/buck-vs-gradle. 1) Moving from Gradle to OkBuck and reasons for it. 2) General discussion around Buck build tool. (Rule based in Buck vs Task based in Gradle) 3) Okbuck with Kotlin projects given it is now 100% kotlin ready (KAPT works!)

What's the best practice? When do you create classes and when do you use top level functions?

Found an interesting (to me that is) trivia:

fun main(vararg args: String) {
	fun toCall(arg: String) = println("fun: $arg")
	val toCall = fun (arg: String) = println("val: $arg")
	toCall("hello")
}

What happens? (spoilers in thread) 1: outputs "fun: hello" 2: outputs "val: hello" 3. fails to compile

Hi, i have a programming design question, where could i ask this?

Any Gradle DSL users around able to help me in #gradle?

This message was deleted.

Hi to all! How I can shadow unused function argument?

When the

photo

property is null, hasPhoto() seems to return true and control goes to the next statement (Kotlin 1.2.60)

Is anyone generating Kotlin code using something other than kapt? kapt is causing problems for me, because it does not work with IntelliJ's build system. And choosing "Delegate run actions to Gradle" does not work either, because it fails to properly rebuild all projects, so I am getting NoSuchMethodError, etc. And on top of all that, it is Java-only, meaning I am blocking myself from ging multiplatform in the future. My main question is: Is there some way to consume the Kotlin sources that are being compiled other than writing my own parser?

Hi I have little question about elvis operator list.forEach { n:Int?->n?: print("No number is available") } I want to pass print statement on left hand side any suggestion or solution appreciated

Does Kotlin have primitive types? 😕

Thank you.

woah that's great news! but should there be anything to stop me from using parcelize from production code now? I've used it in some of my pet projects, I have not gotten any issues from it.

we don't like their UX or implementation

A question regarding constructors: consider the following class hierarchy

class Base(private val x: X) {
    val a: Int = throw IllegalStateException(
        "something went wrong with $this") // calls Derived::toString
}

class Derived(private val x: X) : Base(x) {
    override fun toString() = x.toString() //NullPtrException: x is null
}

val d = Derived(X())

How can it be that there is a NullPtrException in

Derived::toString

when it's called by

Base::<init>

initializing

Base::a

? is

Derived::x

not set before giving it to the constructor of

Base

?

what's the syntax for checking type and then using typed object? kind of like a

.let<Type> { }

Do you have a JVM module that depends on a JS one? That's not supposed to be possible, right?

If I have some remarks about the documentation, where can I report this?

I thought I should abstract away the storage implementation and create an interface, so that later i can perhaps switch from a dropbox backend to a database backend or a memory backend for tests

Is that not what coding is about?

I would assume that this is what general is about, and then you can join a specific channel to get more specific help

Spam? Wow.. that is how you treat people.. seriously

You didnt even let me ask the full question, you stopped and said i was spamming instead

Once again, this is a general channel of Kotlin slack, which means that questions should be about Kotlin. Maybe it's my fault, but I don't see how your question is related to Kotlin language. You're surely welcome to correct me, if I was wrong (and then maybe we'll suggest you a more suitable channel, where you can get a better expertise) Now, may I ask everyone to kindly move this discussion to :thread-please: under this message, so that we'd stop flooding #general-channel.

Why are you so worried about "flooding" the channel? What is going to happen? its general