one of the greatest annoyances of annotation processors is the inability to contribute to an existing class in a type-safe, deterministic way

I've never come across a convincing case for code generation that is solved by partial classes and not solved just as well with judicious inheritance and overriding

I’m still a bit confused about Kotlins generics. Could someone explain the difference between Foo<Any?> and Foo<*> to me, please?

This may help: http://kotlinlang.org/docs/reference/generics.html#star-projections

Thanks, I’ll read it again simple smile

I can't say I know all the intricacies, but my rule of thumb is to use projections when you want to receive something where you don't care about its type parameters. You can't create a type with a projection. e.g.

val foo = ArrayList<Any?>()
    val baz: ArrayList<*> = foo 
    val bar = ArrayList<*>() // Not valid

(There's no raw types in Kotlin, so you can't just say

val baz: ArrayList = foo

)

yes.. but i’m still a bit confused about messages like "Type inference failed: 'T' cannot capture 'out Any?'. Only top-level type projections can be captured”.

gotthis function

public fun <T>compute(function:() -> MyExpression<T>)  : MyComputedExpression<T> = MyComputedExpression(function)

Should be same as Foo<Object> & Foo<?> in java

and I call it with a function that returns a

MyExpression<Any?>

Is it possible to have infix unless in my snippet here?

println("There will soon be Hope in Java 6 Wasteland")
 unless (kotlinNeverReachesV1)

http://try.kotlinlang.org/#/UserProjects/tp4i0bine106qc3b1dmss763v2/h6lcb856a38d76gruvbcvh17ji

So i would expect `T`to be

Any?

but for some odd reason the compiler doesn’t seem to like it.

and the documentation doesn’t explain what a “top level type projection” is and how it differs from other type projections.

@derkork: Sorry, I can't say I've encountered that issue

https://twitter.com/kotlin/status/650944558881218560 The IDE can keep an eye on your imports. Give it a try: What's new in Kotlin M14: http://ow.ly/SY2GS #kotlin Twitter

@hhariri: Could you please share your slides for http://www.jbcnconf.com/infoSpeaker.html?ref=hhariri ? Thanks a lot!

@voddan: Hey Daniil. There wasn’t actually any slides apart from a few intro’s about what Kotlin is and status update. 90% of the talk was just showing Kotlin code...

that compiles

youtrack is back up

KT-9465

another upgrade issue …. I have code like this:

init {

$foo = initTheFoo();

}

of course, now $foo is deprecated

however i cannot get rid of the $ because then the code does not compile

either move initTheFoo to initializer of property or introduce backing property

init order is source order, right

actually, i can’t do that, as i need other code in init{} to run first before those properties are initialised