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#announcements
- y
yole
02/07/2016, 8:35 AMit’s exactly the same class - y
yole
02/07/2016, 8:36 AMthis is documented under https://kotlinlang.org/docs/reference/java-interop.html#mapped-types - z
zoltu
02/07/2016, 9:03 AMOkay, thanks. The page is titled
and has a sister page titledCalling Java code from Kotlin
so I assumed that anything on that page could only be trusted for one-direction.Calling Kotlin code from Java - v
voddan
02/07/2016, 11:36 AM@zoltu: vote for putting the mapping staff on a separate doc page. I 've told @yole that it is hard to find, but he didn't believe me - f
frankdavid
02/07/2016, 11:38 AMI’ve observed that since there is no int -> double automatic conversion, Math util functions need casting which is very inconvenient.
. Is there any plan to somehow overcome this?Math.pow(a.toDouble(), b.toDouble()) - p
Paul Woitaschek
02/07/2016, 1:23 PMWrite an extension function that delegates @frankdavid - f
frankdavid
02/07/2016, 1:49 PM@Paul Woitaschek: thanks for the quick tip. I think the maintainers should think about a solution that does not require users to write such boilerplate, since this is a very common use-case - p
Paul Woitaschek
02/07/2016, 1:51 PMThen you could just do a: - p
Paul Woitaschek
02/07/2016, 1:52 PMval result = a.pow(b) - p
Paul Woitaschek
02/07/2016, 1:52 PMI initially also thought like you that this is very annoying. - p
Paul Woitaschek
02/07/2016, 1:52 PMHowever I think there are some arguments that make this strict casting favorably. - p
Paul Woitaschek
02/07/2016, 1:54 PMFor example in java if you have an int field in a class and change it to float. Then you have to manually check all accessors (ie method signatures) if the int is still appropriate. - p
Paul Woitaschek
02/07/2016, 1:55 PMHaving you to explicitly convert them - at least for me - leads to less bugs - s
simonorono
02/07/2016, 2:06 PMI just received an odd error: Error:(41, 23) Kotlin: Type mismatch: inferred type is T but T was expected Reported as KT-10949, because apparently, it was fixed in 2012 - s
simonorono
02/07/2016, 2:07 PManybody has received the same error? do you have a workaround? - v
vmironov
02/07/2016, 2:11 PMYou have defined
twiceT - v
vmironov
02/07/2016, 2:12 PM
as type parameter ofT
classArray2D - v
vmironov
02/07/2016, 2:12 PMand
as type parameter ofT
functionmap - v
vmironov
02/07/2016, 2:12 PMand those `T`s are not the same - v
vmironov
02/07/2016, 2:13 PMchanging
signature tomap
should helpinline fun <reified R> map - p
Paul Woitaschek
02/07/2016, 4:57 PMAfter updating to rc I get a "kotlin library classes.jar has an unsupported format. Please update the library or the plugin" by android studio - p
Paul Woitaschek
02/07/2016, 5:34 PMI can no longer see my Java classes from kotlin as of RC - z
zoltu
02/07/2016, 6:26 PM@voddan: Is there an issue to vote on for that? - c
cem2ran
02/07/2016, 8:01 PMmapTypeMismatch.png - c
cbruegg
02/07/2016, 8:08 PMrx.Observable<RenderableView> is not a subtype of rx.Observable<Any>. See https://kotlinlang.org/docs/reference/generics.html#variance - p
Paul Woitaschek
02/07/2016, 9:44 PMIs there any way to add a static extension function to a java class? - m
michaelrocks
02/07/2016, 9:46 PMNo - z
zoltu
02/07/2016, 10:01 PMA static extension? Like
rather thanMyClass.foo()
?myInstance.foo() - z
zoltu
02/07/2016, 11:00 PMHow do I get
via gradle?kotlin-test.jar - z
zoltu
02/07/2016, 11:01 PMIntelliJ is offering me a quick-fix for it, but I strongly suspect that won't work for my build server which builds with gradle.