Store.withTransformer constructor
Store.withTransformer(
- StreamTransformer transformer
Construct a new Store instance with a transformer.
The standard behavior of the "trigger" stream will be modified. The
underlying stream will be transformed using transformer
.
As an example, transformer
could be used to throttle the number of
triggers this Store emits for state that may update extremely frequently
(like scroll position).
Implementation
Store.withTransformer(StreamTransformer<dynamic, dynamic> transformer)
: _streamController = StreamController<Store>() {
manageStreamController(_streamController);
// apply a transform to the stream if supplied
_stream = _streamController.stream
.transform(transformer as StreamTransformer<Store, dynamic>)
.asBroadcastStream() as Stream<Store>;
}