Am I missing something, or

sliceArray()

behaves a bit weird when out-of-bounds range is passed? Example:

arrayOf("a", "b", "c").sliceArray(0 .. 3).forEach { println(it.toUpperCase()) }

Anyone ever seen this problem trying to compile Kotlin with JDK9? https://travis-ci.org/junit-team/junit5/jobs/260847686#L680 I'm adding kotlin code to Junit5 and it seems to be hitting a problem compiling on JDK9

Is there any rationale behind Kotlin not being able to infer the type from the default value:

data class Foo(
        val bar = true
)

or

FooKt::class.java.classLoader

probably works, assuming your file is named

Foo.kt

Oracle doesn't have a place to download JDK 1.6 anymore.

If you have an inner class which should be instatiated inside the class where it is declared. But the object should be accessible outside the class through some getter. How it is possible in Kotlin? If not possible, then why it is restricted in Kotlin?

how do you exclude properties from the generated equals/hashCode methods in a data class?

fun main(args: Array<String>) {
    val s = ""
    val i = 0
    val b = false
    
    println(s::class == String::class)
    println(i::class == Int::class)
    println(b::class == Boolean::class)

    fun test(a: Any) = when (a::class) {
        String::class -> println("String")
        Int::class -> println("Int")
        Boolean::class -> println("Boolean")
        else -> println("Else")
    }

    test(s)
    test(i)
    test(b)
}

What you expecting here?

answer in thread

@karelpeeters sorry, i did not mean that there would be both things in the interface... just one of the two

how would I define a

fun <T>

where

<T>

is one of 2 or more unrelated classes? for example:

<T>

can be

<String>

or

Map<*,*>

but nothing else

define two functions

Why is there

firstOrNull

and

find

if they both do the same thing?

Hey, does anyone knows a good podcast about coding?

Any thoughts on this delegate (sync improvements, etc...)?

class FlipOnAccess(
    private val initialValue: Boolean,
    private val onlyFirstAccess: Boolean = true
) : ReadOnlyProperty<Any, Boolean> {
  private val flipper = AtomicInteger(1)

  private val Int.isEven get() = and(1) == 0

  override fun getValue(thisRef: Any, property: KProperty<*>) =
      with(flipper.getAndIncrement()) {
        if (this == 1) {
          initialValue
        }
        else if (isEven || onlyFirstAccess) {
          !initialValue
        }
        else {
          initialValue
        }
      }
}

I just played around with the

kotlinc

REPL, and pretty quickly got a crash while doing this:

>>> data class Node<T>(var prev: Node<T>?, var next: Node<T>?, val data: T)
>>> val first = Node(null, null, "foo")
>>> val next = Node(first, null, "bar")
>>> first.next = next
>>> first
exception: java.lang.StackOverflowError
	at Line_2$Node.toString(Line_2.kts)
	at java.lang.String.valueOf(String.java:2994)
	at java.lang.StringBuilder.append(StringBuilder.java:131)

Is there some way to make the built-in

toString

detect these kinds of loops, or do I need to create my own for these kinds of structures?

the use() extension method seems to be defined on Closeable instead of AutoCloseable So that Means I can't do Files.list(path).use { it.toString() }. In fact I can't use on any Stream? Am I misunderstanding what is going on?

No reason to re-implement all that stuff yourself. There are good solutions for reading primitive values from a byte stream. NIO `ByteBuffer`s are one, there is

ByteArrayDataInput

from Guava, etc.

And I want to forbid destructing declarations at all for anything with more than 3 fields

guys, is there any plans to add some functions for working with 2d arrays in kotlin’s std lib? Currently it’s a bit verbose:

val matrix = Array(dim1, { IntArray(dim2) })

So... Dependency Injection and Kotlin. Right now it seems like there are quite a few "one man bands" out there trying to be the next big thing. Dagger seems almost like an elephant in a Window store, considering how elegant DI could be done in Kotlin. What would you use today, and in a near future?

📣 📣 1.1.4 is almost around the corner. If you are a library or framework author, and didn’t try EAP builds with your software yet, please do so. #eap

Two talks in those sessions from @pakoito and @Jorge Castillo that you should not miss if interested in FP in Kotlin.

that looks like an awesome conference...wish I didn't use my one conference per year allowance 😞

Kotlin 1.2 M2 is out We’re happy to announce the second milestone release for Kotlin 1.2. The primary focus of this release is concerned with stability and bugfixes in Kotlin compiler and tooling as well as improvements of Kotlin standard library. It also includes many … Continue reading →

Anyone know when Kotlin 1.1.4 will drop approximately?

if you get to decide on your own which repos are proxied, you aren’t working in a large enough organisation 🙂

i just updated my custom 'kt' one to call it (instead of the old one which now 404s) but getting the real-time suggestion/completion would be great

Also handy when testing async code https://github.com/kotlintest/kotlintest/blob/master/doc/reference.md#eventually-

Can you write out a table in KDoc? I thought it supported full markdown? I've tried both of these and neither seems to render correctly in intellij

* <table>
 *     <tr><td>source</td><td>source2</td></tr>
 * </table>
 *
 * | source | node1 | node2 | node3|
 * | -------|-------|-------|------|
 * | node1  |  0.0  | 1.2   |  1.3 |
 * | node2  |  2.1  | 0.0   |  2.3 |
 * | node3  |  3.1  | 3.2   |  0.0 |