iterable.dart

import 'package:meta/meta.dart';

void main() {
  // iterates only first element.
  gen().first;
  print('Iterated first item because of first\n');
  // iterates each element
  gen().toList();
  print('Iterated List\n');
  gen().last;
  print('Iterated each item because of last\n');
  
  // create lazy iterable
  final lazy = gen();
  // create iterator
  final iterator = lazy.iterator;
  while (iterator.moveNext()) {
    print('current value -> ${iterator.current}');
    
    iterator.moveNext();
    print('move next');
  }
  print('Iterated each item\n');
}

// creates sequence of ints
Iterable<int> gen() sync* {
  for (int i = 0; i < 5; i++) {
    print('iterate element $i');
    yield i;
  }
}


// Michael Lazebny