Hi all! I’ve written a reducer function like this...

# redux

[willyrs]

Hi all! I’ve written a reducer function like this:
val splashReducer: Reducer<SplashState> = { state, action -> return state }
and when I call it on iOS I have a EXC_BAD_ACCESS (code=1, address=0x0) error
If I write the function like this:
fun splashReducer(state: SplashState, action: Any) : SplashState { return state }
it works!
Do you think it’s a problem with reduxkotlin or with kotlin-native?
P.S. On kotlin-android it works with both

[Patrick Jackson]

Does this happen when the store is created? I
Perhaps a threading issue. The val is initiated at some point (not sure if this is app start up, or first time code from this file is accessed). f so is the store a global val? or part of a class? which thread is it initiated on?
If this is open source feel free to drop a link

[willyrs]

I also thought about a threading issue, but I can’t solve it even with @SharedImmutable or @ThreadLocal
Yes, this is a public repository, but still very very work in progress 🙂 https://github.com/EmmanueleVilla/apod-kampkit
In the last commit it works because I’ve changed everything to “fun”. The commit with the crash should be 4db0a73 but I can’t check for sure right now!

[willyrs]

and yes, it happens when the store is created! everything is a global val, I’m trying to keep it all functional so there are no wrapping classes. I’ve tried to put everything in a companion object with @SharedImmutable but I had lots of issues of solving all the IncorrectDereferenceException that came with it

[Patrick Jackson]

Gotcha. I remember having this issue before. It's been awhile since then and not sure what my conclusions where. It would be great to document any findings. Couple of ideas:
1) try to use by lazy with the reducer and/or store.
2) use a container object for the store and/or reducers
3) just use the fun

[willyrs]

thanks for the tips! I’ll try both 1 and 2 and see what happens. I’m happy to use 3 and never think about it anymore, I just wanna do some tests to know what’s happening under the hood

[Patrick Jackson]

Agreed. Please share any findings. I might add a page in the documentation - or you can 🙂

[willyrs]

I still had no change to try them, I’m doing this on my spare time 🙂 I’ve built a multiplatform project with the core business logic based on reduxkotlin with jvm server and react-android-ios client

[willyrs]

I think I tried to use companion objects before writing here, I didnt have this particular error, but I got a lot of IncorrectDereferenceException everywhere

[willyrs]

maybe it’ll work by putting everything inside a companion object, but i mean.. why 😄