First compile with the latest alpha:

Caused by: java.lang.IllegalArgumentException: No argument for parameter VALUE_PARAMETER CONTINUATION_CLASS name:$completion index:3 type:kotlin.coroutines.Continuation<kotlin.collections.List<

...

Never seen that before, does it give any indication on what piece of code this is occurring on? I have several projects on the

alpha.28

.

Yes, and I'm trying to use

context(Raise...)

on it.

Try by making it a normal non expression function and let’s see 👀

Nope... that's not it.

Replaced it with an either { } block, and then it compiled...

Yes, that's definitely a bug in the compiler related to context receivers.

Oh, so this is a known bug? Is this in all the alphas?

This is related to the Kotlin Compiler, not Arrow. Context receivers is still experimental, and not stable.

Ah, so I guess that's why I saw you use some regular receivers with Raise...

Yes, exactly. In the webinar last week I refrained from using context receivers anywhere, and thus I mixed

Either

and

Raise<E>

in some places to refrain from using them. They seamlessly interop, and you can whatever you want wherever. So when I was working with

Resource<Either<E, A>>

then I used

suspend fun ResourceScope.example(): Either<E, A>

and otherwise I used

Raise<E>

.