Basic Dart Stream example

main.dart

void main() async {

  Stream<String> sushi = Stream<String>.periodic(Duration(seconds: 1), (x) => '$x: fish').take(10);
  var mappedSushi = sushi.map((sushiPiece) => sushiPiece + ' mapped');
  await mappedSushi.forEach( print);
}

/* output
0: fish mapped
1: fish mapped
2: fish mapped
3: fish mapped
4: fish mapped
5: fish mapped
6: fish mapped
7: fish mapped
8: fish mapped
9: fish mapped
*/

/* run code on dart pad
https://dartpad.dev/ef386fa4949dd5513e7c3705dd021eb1?null_safety=true

*/