```public fun <T> Flow<T>.onEmpty(action: suspend FlowCollector<T>.() -> Unit):...

# coroutines

[myanmarking]

public fun <T> Flow<T>.onEmpty(action: suspend FlowCollector<T>.() -> Unit): Flow<T> {
    var valueCount: Int = 0
    return flow {
        collect { valueCount += 1; emit(it) }
        if(valueCount == 0) action()
    }
}

does this makes sense in terms of implementation ?

[elizarov]

Looks good to me

[myanmarking]

will this work: flowOf<Int>().onEmpty{ emit(0) }. From my test it works, but someone mentioned it wont

[elizarov]

It should work.