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That's a bit outdated but most of the patterns there still apply. I'd ignore Try, since it's recommended to use Either.catch or IO instead. Read this post for more details on that 

<https://jorgecastillo.dev/please-try-to-use-io|https://jorgecastillo.dev/please-try-to-use-io>

`BIO&lt;E, A&gt;` looks promising :smile: hopefully it’s release soon

do you have a source code for the above post? cc <@U0B8CNTJ8>

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```service.loadAllSpeakers()```
i wanna ask about the above method, by reading your post, I assume that return plain `List&lt;Speaker&gt;`  cmiiw?

also, do you have any recommendation to combine it with coroutine? or by using `IO` I don’t have to make my code like this, except using (cancelation) or, arrow already provide that as well?

```interface SpeakerService {
 fun loadAllSpeakers(): Flow&lt;List&lt;Speaker&gt;&gt;
 // or suspend function
 suspend fun loadAllSpeakers(): List&lt;Speaker&gt;
}```

Hi! Sorry but I don't have the codebase for this. But yep, `loadAllSpeakers()` just retunrs the plain list of speakers.

I'd not recommend mixing kotlinx coroutines if you already got IO in place. You can use IO.fx {} which allows cancellation in a more FP way.

I recommend reading ArrowFx docs <https://arrow-kt.io/docs/fx/>

Do we have docs regarding fx cancellation <@U0RM4EPC7>?

ok will learn more about arrow-fx, thanks <@U0B8CNTJ8>.
yes the docs would be great, looking forward soon

I see, I thought it would be great to combined it like `Room` using `Flow` (for local data source), `Retrofit` service that return an `IO` but also mapping to be inserted/updated to SQLite.

We don't have support for streams yet, that's something in the roadmap but might take some time

I see, so the `IO` better for one-shot operation?

<@U0B8CNTJ8> There is documentation on how to use and work with cancelation but not how it works internally