singleton bloc stream using rxdart

SampleBloc.dart

import 'package:rxdart/rxdart.dart';
class SampleBloc {
  
  static final SampleBloc _singletonBloc = new SampleBloc._internal();
  
  final sampleBlocObj = BehaviorSubject<int>();
  
  factory SampleBloc() {
    return _singletonBloc;
  }
  SampleBloc._internal() {
    sampleBlocObj.value = 1;
  }
  dispose() {
    sampleBlocObj.close();
  }
}
final sampleBloc = SampleBloc();