A modern programming language that makes developers happier.

kotlinlang

Are we stuck with the following situation?
java declaration
`public abstract &lt;R&gt; java.util.concurrent.CompletableFuture&lt;R&gt; send(Object command)`
Java call
`object.send(command);` nice :thumbsup: :java:
Kotlin call
`object.send&lt;Any&gt;(command)` not nice, I'd like to avoid having to write `&lt;Any&gt;` :thumbsdown: :kotlin:

What happens when you leave out the `&lt;Any&gt;`?

&gt;&gt;&gt; Type inference failed: Not enough information to infer parameter R in
`fun &lt;R : Any!&gt; send(command: Any!): CompletableFuture&lt;R!&gt;!`
Please specify it explicitly.

Why does it work in Java? It it a raw `CompleteableFuture` ?

I don't know type system well enough to answer why :neutral_face:

You should create a ticket. It is not just a problem in Java interop but in Kotlin also:
```
fun &lt;R&gt; foo() : CompletableFuture&lt;R&gt; { TODO() }

val init = run {
    foo()
    Unit
}
```
Seems like a nice ease of life win to omit type on an unused return value.

Yeah, there is even a selection of issues, not much activity on them currently though:
KT-15604,
KT-19684,
KT-2656