Streams-Bloc

import 'dart:async';

Stream<int> contStream() async* {
  for (var k = 0; k < 10; k++) {
    yield k;
  }
}

Stream<int> timedCounter() async* {
  int i = 0;
  while (true) {
    await Future.delayed(Duration(seconds: 1));
    yield i++;
    if (i == 10) break;
  }
}

class Bloc {
  
  int _total = 0;  
  int  get total => _total;
  
  final _sc = StreamController<int>();
  
  Stream<int> get stream  => _sc.stream;
  
  incrementarTotal(){    
    _total++;
    _sc.add(_total);
  }
  
  fechar(){
    _sc.close();
  }
}


void main() {
  var b = Bloc();
  print('Bloc');
  b.incrementarTotal();
  b.stream.listen((data) => print(data));
  b.incrementarTotal();
  
  //var k = timedCounter();
  //toList Creates and adds all elements of this stream to the list in the order they arrive.
  //k.map((data) => print(data)).toList().whenComplete(() => print('done'));
  //   k.listen(
  //     (data) => print(data),
  //     onDone: () => print('Fim'),
  //   );  
}