What is the difference between using RxDart and the standard Stream API in Dart?

RxDart extends the standard Stream API in Dart by adding reactive programming features inspired by the RxJS library.

Main differences:

• Rich set of operators: RxDart provides many operators for transforming, filtering, and combining streams (e.g., debounce, throttle, merge, combineLatest), which are not available in the standard Stream.
• Subjects: RxDart introduces the concept of Subject — a stream and listener at the same time, simplifying work with events and states.
• State and stream management: RxDart makes it easier to build complex asynchronous chains and reactive models.

Example of using RxDart to create a Subject and subscribe to it:

import 'package:rxdart/rxdart.dart';

void main() {
  final subject = BehaviorSubject<int>();

  subject.listen((value) => print('Received: $value'));

  subject.add(1);
  subject.add(2);

  subject.close();
}

Thus, RxDart is suitable for more complex reactive programming scenarios, whereas the standard Stream API is good for basic asynchronous operations.