ListQueue.from(Iterable elements)

Create a ListQueue containing all elements.

The elements are added to the queue, as by addLast, in the order given by elements.iterator.

All elements should be assignable to E.

Source 

factory ListQueue.from(Iterable elements) {
  if (elements is List) {
    int length = elements.length;
    ListQueue<E> queue = new ListQueue<E>(length + 1);
    assert(queue._table.length > length);
    for (int i = 0; i < length; i++) {
      queue._table[i] = elements[i] as Object/*=E*/;
    }
    queue._tail = length;
    return queue;
  } else {
    int capacity = _INITIAL_CAPACITY;
    if (elements is EfficientLengthIterable) {
      capacity = elements.length;
    }
    ListQueue<E> result = new ListQueue<E>(capacity);
    for (final element in elements) {
      result.addLast(element as Object/*=E*/);
    }
    return result;
  }
}