Is there such a thing as a Resource that reinitializes itsel

Question

Is there such a thing as a Resource that reinitializes itself if it s closed I want to store some in a map close them when unused re open them on a new usage

simon.vergauwen · Answer

gt close them when unused No that sounds highly mutable and the `Map` somehow needs to know when it goes out of scope

simon.vergauwen · Answer

Scala has the concept of `HotSwap` which I ve also ported but have not bothered bringing to Arrow It s to basically open and use `Resource` on rotation <https github com nomisRev arrow fx coroutines utils blob main src commonMain kotlin io github nomisrev Hotswap kt>

dave08 · Answer

I have an Android app with a map of state machines handling the state of each item on a list I was thinking of using resource to initialize and use them in a Compose view and unsubscribe close them when they go out of view But when they come back into view I need to re initialise them yeah I guess that s really mutable but I m not sure what I can do otherwise

dave08 · Answer

gt open and use `Resource` on rotation If I try to retreive this same resource from the map when it s closed it ll re open it

simon.vergauwen · Answer

Hmm so each ` Composeable` has it s own `Resource` A ` Composeable` can listen to when it gets destroyed right I guess there could be some integration there using `Resource allocated` thinking face I am not familiar enough with Compose and it s been a long time since I did Android but it might be possible

simon.vergauwen · Answer

Something in ` Composeable` that doesn t gets retriggered on recomposition and supports suspend Is there something like `rememberLaunchedEffect` where you can attach a `Unit` key so it ignores recomposition and can you then attach some listener to be invoked when they view gets destroyed Then it should be possible

dave08 · Answer

There s this <https developer android com jetpack compose side effects remembercoroutinescope>

dave08 · Answer

The scope seems to get cancelled when not in the UI tree

dave08 · Answer

I guess you mean <https apidocs arrow kt io arrow fx coroutines arrow fx coroutines resource allocate html>

dave08 · Answer

It seems like this is better <https developer android com jetpack compose side effects disposableeffect>

dave08 · Answer

But it s only in the effect block and I need to use it outside of that block