public void CopyTo(ArrayQueue <T> queue)
{
if (queue.elements.Length < Count)
{
queue.elements = new T[Count];
}
Array.Copy(elements, dequeueOffset, queue.elements, 0, Count);
queue.dequeueOffset = 0;
queue.enqueueOffset = Count;
}
internal Enumerator(ArrayQueue <T> queue)
{
this.elements = queue.elements;
this.last = queue.enqueueOffset;
this.offset = queue.Count == 0 ? last : queue.dequeueOffset - 1;
}