~You want ` lt in T gt ` on the interface ~ kotlinlang #announcements

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Title

karelpeeters

04/12/2019, 4:25 PM

You want
<in T>
on the interface.

Alexey Subbota

04/12/2019, 4:27 PM

Did you answer me?

karelpeeters

04/12/2019, 4:28 PM

Yes 😒imple_smile:. I had the answer still typed up from when you deleted the code.

Alexey Subbota

04/12/2019, 4:29 PM

If I write so interface Sample<in T>{ fun foo(v:T) } The error is still present (

karelpeeters

04/12/2019, 4:30 PM

My bad. You probably do want

<in T>

on the interface, but that's not the problem here.

The actual problem is that SAM conversion only works for Java interfaces.

https://kotlinlang.org/docs/reference/java-interop.html#sam-conversions

Alexey Subbota

04/12/2019, 4:35 PM

Wow! Thanks! What a pity...

karelpeeters

04/12/2019, 4:35 PM

Yeah I agree it's weird, the suggestion is to use higher order functions instead.

Alexey Subbota

04/12/2019, 4:37 PM

I will

ghedeon

04/12/2019, 8:25 PM

don't forget to vote: https://youtrack.jetbrains.com/issue/KT-7770

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