Yes, it is.

@adolgiy commented on @stefano.maffullo’s file https://kotlinlang.slack.com/files/U6L6M0A7R/F6MS4M804/-.kt: why not just try it in your IDE?)

can someone tell me why the exception is thrown in line 11 even though the condition in line 8 was true? It doesn't happen if I surround the branches with curly braces, which are optional for one-liners?

@adolgiy commented on @tschuchort’s file https://kotlinlang.slack.com/files/U2EN0SJAC/F6M5V1PBJ/-.kt: looks like condition were

false

it was definitely true

but the exception is also thrown when I negate the condition, so I assume both branches will be executed regardless of the condition

never saw such error

Is there an existing solution for a "half-mutable" map? (A map where you can change the existing values but cannot add or remove keys.)

would the keys just get set on creation?

or start with an existing map?

Set on creation (which could come from an existing map).

So I could do something like

val keys = setOf("a", "b", "c")
...
val halfMap = keys.associateHalf { it to 0 }
halfMap["b"] = 5  // works
halfMap["d"] = 7  // throws exception

I'm not just looking to add a wrapper around an existing map (that's easy enough), I'm more interested in an existing solution with the associated memory optimizations.

Is it possible to implement an infinite event loop (eg similar to JavaFX but is a CLI ver accepting keyboard input instead) in Kotlin?

And do the CLI in the main Thread, or the other way around.

@napperley Yes, start a new Thread that runs the loop. 2 replies Use a

SyncronizedQueue<Event>

for the events, and just call

poll()

on it in the while loop, it will automatically wait until there are events and call

put(event)

when there's a new even, it will automatically resume the main loop.

https://github.com/JetBrains/kotlin/blob/master/libraries/stdlib/src/generated/_Collections.kt#L722 Doesn't this produce inconsistent behaviour to the for-loop at 726? If the collection is empty, no error will be thrown. However, on line 722 if the collection is empty an error will be thrown. If n == 1

Solves the issue of Kotlin's readLine() not blocking when Gradle is used.

Solves the issue of Kotlin's readLine() not blocking when Gradle is used.

@User uploaded a file: is there a nicer way to write this?

@gildor commented on @Dalinar’s file https://kotlinlang.slack.com/files/U0NPL9MPU/F6P589815/is_there_a_nicer_way_to_write_this_.kt:

gson.fromJson<Map<String, Any>>(json, Map::class.java)

@Dalinar commented on @Dalinar’s file https://kotlinlang.slack.com/files/U0NPL9MPU/F6P589815/is_there_a_nicer_way_to_write_this_.kt: thanks

anyone up for a non-typical experiement in kotlin grammar?

I want to try EAP. I have switch the channel to preview and change the version to "1.1.4-eap-77" but IDEA show Kotlin not configured. Anyone know why? It is fine if I change back to 1.1.3-2 but it warns me that the version is different from the plugin (preview)

Ok, I solved it. I only add repository in the buildscript.

Can anybody justify IntelliJ (Android Studio) decision of translating this Java code:

boolean foo = false || true;
foo |= false;

to this Kotlin code:

var foo = false || true
foo = foo or false

Why is the

or

worth introducing the inconsistency?

Especially given that it seems to have a different precedence than

||

, and somebody can be surprised later on.

Because the

|

operator doesn't exist in Kotlin, so

|=

doesn't exist either.