I have a class `A` that's part of a library that I...

# flow

[Justin Tarnoff]

I have a class A that's part of a library that I'm writing that is getting pulled into a sample app through Gradle. `A`'s constructor contains parameter of type SharedFlow<C> where C is a subclass of B

When I import the library in my Android app, I see in the decompiled code that the parameter is listed as type SharedFlow<out B>. The compiler is complaining that it is looking for SharedFlow<B> but I'm providing SharedFlow<C>. While I loosely understand generics, I don't understand what is happening here. Can anyone explain?

[Kevin Worth]

Two thoughts:
1. You might have a better chance of getting help on this using a different channel, given this doesn’t really come down to a question about Kotlin Flow
2. Sharing some code may help people understand the situation you’re in and better be able to help you

[Justin Tarnoff]

Thanks Kevin. I've identified the root cause, my project was managing transitive dependencies improperly. As you noted, I unfortunately did not post enough info here to be able to resolve the issue. I will post more carefully in the future.

My hope was that this was a typical error when working with flow parameters, but that turned out not to be the issue.

On a side note, in reading through old posts, it seems clear that I should be passing as a Flow and not a SharedFlow unless I need to use the replay cache based on this conversation:
https://kotlinlang.slack.com/archives/CRJCTR5PD/p1625556094048000?thread_ts=1625493055.046500&cid=CRJCTR5PD