interleave method

Iterable<T> interleave(Iterable<T> other)

Returns the elements of this iterable interleaved with the elements of other.

The elements of the resulting iterable will consist of the first element of this iterable followed by the first element of other, followed by the second element of this iterable, and so on until both iterables are fully consumed.

If the iterables are not the same length, the remaining elements of the longer iterable will be appended to the end of the resulting iterable in iteration order.

Implementation

Iterable<T> interleave(Iterable<T> other) sync* {
  final iterator = this.iterator;
  final otherIterator = other.iterator;

  bool iteratorOpen;
  bool otherIteratorOpen;

  do {
    iteratorOpen = iterator.moveNext();
    otherIteratorOpen = otherIterator.moveNext();
    if (iteratorOpen) yield iterator.current;
    if (otherIteratorOpen) yield otherIterator.current;
  } while (iteratorOpen || otherIteratorOpen);
}