fun <A, B, K, C> <ERROR CLASS><A>.foldToObservableMap(initialAccumulator: C, folderFun: (A, C, ObservableMap<K, B>) -> C): ObservableMap<K, out B>
foldToObservableMap takes an rx.Observable stream and creates an ObservableMap out of it, while maintaining an accumulator.
initialAccumulator
- The initial value of the accumulator.folderFun
- The transformation function to be called on the observable map when a new element is emitted on
the stream, which should modify the map as needed.