The top 10 advanced concepts in Dart

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1. Asynchronous Programming with `async` and `await`:

Dart supports asynchronous programming through the `async` and `await` keywords. This is used for dealing with tasks that might take some time, like network requests.

Future<void> fetchData() async {
 print("Fetching data…");
 await Future.delayed(Duration(seconds: 2));
 print("Data fetched!");
 }

2. Streams and Reactive Programming:

Streams are a powerful concept in Dart that allow you to work with asynchronous data sequences. This is particularly useful for scenarios like event handling.

Stream<int> countStream() async* {
 for (int i = 1; i <= 5; i++) {
 await Future.delayed(Duration(seconds: 1));
 yield i;
 }
 }
void main() {
 final stream = countStream();
 stream.listen((data) {
 print(data);
 });
 }

3.Generators:

Dart supports both synchronous and asynchronous generators, which can be used to produce a sequence of values lazily.

Iterable<int> countSync(int n) sync* {
 for (int i = 1; i <= n; i++) {
 yield i;
 }
 }
Stream<int> countAsync(int n) async* {
 for (int i = 1; i <= n; i++) {
 await Future.delayed(Duration(seconds: 1));
 yield i;
 }
 }

4.Mixins: