Question:How to throttle events in bloc? Let’s say, I want to trigger file save on user input, but perform file system access not more often than once per 100ms?
Example bloc event handler:
Answer:Each handler have an optional
transformer:field which can do throttling (and much more).
Using rxdart you can implement throttling yourself:
I wrote the bloc_event_transformers package to do popular transforms like throttle and debounce to reduce the boilerplate in my apps. It can be used like that:
on<StoreFile>( _handleStoreEvent, transformer: (events, mapper) => events.throttleTime(Duration(milliseconds: 100)).switchMap(mapper), );
on<StoreFile>( _handleStoreEvent, transformer: throttle(Duration(milliseconds: 100)), );
If you have better answer, please add a comment about this, thank you!