statefulMapConcat
Transform each element into zero or more elements that are individually passed downstream.
Description
Transform each element into zero or more elements that are individually passed downstream. The difference to mapConcat
is that the transformation function is created from a factory for every materialization of the flow.
emits when the mapping function returns an element or there are still remaining elements from the previously calculated collection
backpressures when downstream backpressures or there are still available elements from the previously calculated collection
completes when upstream completes and all remaining elements has been emitted