Say imagine I had

fun fopen(path: String, mode: String): File {
    contract {
        mustBeClosed()
    }
}

I'm also looking for a roadmap of the future releases. I read e.g. about 1.3 and 1.3.20 what is with the minor versions 1.3.1-1.3.19? I'm not looking for actual dates I'm more intrested which tickets should be done before the release

use internal

Hi everyone! How do i declare kotlin equivalent of java's List<? extends SomeClass> ?

Loving the new Kotlin 1.3 documentation! You can see what is available in Common, JVM, JS and Native, and select/unselect to apply filters. The colors also help. It's the little things! See yourself here: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/index.html

When writing kotlin scripts: How do you parse arguments?

Does someone know when 1.3 will be available on HomeBrew ?

Why this works:

class Foo {
    private val test: String
    init {
        test = "test"
    }
}

and this doesn’t:

class Foo {
    private val test: String
    init {
        bar()
    }
    private fun bar() {
        test = "test"
    }
}

Is there any valid case why it may fail? Or it’s the compiler’s fault that it doesn’t recognize

bar

is called inside an

init

?

I need to write in Kotlin DSL: filter {line -> if (true/*some condition*/) line else null } Filter is defined here: https://docs.gradle.org/current/dsl/org.gradle.api.tasks.Copy.html#org.gradle.api.tasks.Copy:filter(org.gradle.api.Transformer) But compiler does not compile it, because null is not String. Filter is defined in java and null is allowed there. How to write it in Kotlin?

https://github.com/JetBrains/kotlin OMG, am I seeing it right? was 1.3 really released to maven central?

can't you just bump?

It’s released when the blog post is published. Please be patient.

I feel like an addict now

<!channel> Kotlin 1.3 released with #coroutines out of experimental, #kotlin-native beta, #ktor beta and more! All details are in the blog post and accompanying materials: https://blog.jetbrains.com/kotlin/2018/10/kotlin-1-3/ It’s now perfect time to start spreading the word, migrating projects, libraries and embracing the #multiplatform! Have fun and let’s Kotlin!

Is there any good code coverage library for Kotlin like Cobertura or JaCoCo is for Java? It has be FLOSS of-course

ooh, that’s such a nice gif to represent coroutines

lol, tons of deprecations instantly, all pre 1.3 libraries using coroutines deprecated 😂

when will it hit google repos

yeah, it kinda sucked. i had a few libraries from people i wanted to use but now i can not because experimental coroutines

Kotlin.. the only programming language that has a slogan 😎

Is there a parallel launch of a new Gradle version so that the embedded compiler is also 1.3 for

buildSrc

?

Anyone else getting unresolved references after migrating from experimental to 1.3?

@orangy It would be good to add a quick piece to the inline classes page about how/if inline classes can be used in Java source files. Also any pitfalls (if any) of doing so. https://kotlinlang.org/docs/reference/inline-classes.html

Oops, AS was indexing while I tried running the migrations for 1.3 and coroutines 1.0.0... it can't run them during indexing. How do I run the migrations now, I just can't find them 🙈

So I notice that 1.3 adds support for an official Koltin

Random

which is awesome! I'm wondering why there wasn't an official Kotlin version of

SecureRandom

added. Without an official

SecureRandom

100% kotlin based crypto libraries can't be implemented without adding platform specific implementations. Dan Kaminsky did an interesting talk at defcon about why more standard libraries libraries should offer

SecureRandom

by default. So many software security bugs have been caused purely because someone on the implementation side goofed and used a predictable Random number generator.

do you guys use kotlin at work ?

ok, now it's time to jump on the 1.4 hype train :trollface:

Is there no official Kotlin support for SAM conversion on Kotlin interfaces in 1.3? I know that the flag was added to the compiler back in 1.2 (it's used by the Gradle Kotlin DSL), but it's not being featured in the "whats new". It's also one of the most voted about issues on YouTrack. What's it's status? https://kotlinlang.org/docs/reference/whatsnew13.html

i expect line 35 to fail at compile time but it doesn’t... 😞