I could implement this in a more beautiful way, but the StateFlowImpl class is private (I didn't understand why it is private)

Your implementation is incorrect, it will not work, you never subscribe on state flow

Not quite sure what is your final goal with this (do you really need initial value or not (because every state already have default value. Looks that you just need:

listSources.asFlow().flattenMerge().collect { doSomethingWiht(it) }

but maybe I misunderstood you case, becayse example above will cause inifinity cycle (on every event update you update it again which will cause one more update)

but your description “way to maintain multiple StateFlow related to an event? Reactive, to modifications to any of the states” is pretty clear and flattenMerge should work for it, but looks that you want modify it, which is not so clear for me

@bezrukov I didn’t know this combine function with varargs, just the method inside Flow, Thanks, I imagine that’s the solution

@bezrukov "combine" do not respond with the "single ()" method, any solution?

could you show full example what you are trying to achieve

you can use https://play.kotlinlang.org/ to show example and demonstrate what doesn’t work for you