What advantages does using RxDart provide in developing reactive applications on Flutter?.

RxDart extends the standard capabilities of Dart Stream, providing powerful tools for reactive programming in Flutter. Main advantages:

• Convenient data stream handling: RxDart adds operators (map, filter, debounce, combineLatest, etc.) that simplify transforming and combining streams.
• State management: allows easy implementation of state management patterns based on streams, improving code readability and maintainability.
• Asynchronous and reactive: simplifies handling asynchronous events and UI interactions, making the application responsive.
• Extensibility: you can create your own operators and use a rich set of existing ones.

Example of using RxDart to combine two streams:

import 'package:rxdart/rxdart.dart';

final subject1 = BehaviorSubject<int>();
final subject2 = BehaviorSubject<int>();

void main() {
  CombineLatestStream.combine2(subject1, subject2, (a, b) => a + b)
    .listen((sum) => print('Sum: $sum'));

  subject1.add(1);
  subject2.add(2); // Will output: Sum: 3
}