///<summary>Put new <see cref="{T}"/> element into queue </summayr>
public override void Enqueue(T value)
{
dllQueueNode <T> newNode = new dllQueueNode <T>(lastNode, null, value);
lastNode.SetNext(newNode);
lastNode = newNode;
size++;
}
///<summary>Create new instance of <see cref="dllQueue{T}"/> class</summary>
public dllQueue()
{
listHead = new dllQueueNode <T>();
lastNode = listHead;
}
