private void SetHeadItem(T data)
{
var item = new DuplexItem <T>(data);
head = item;
tail = item;
Count = 1;
}
public void PushFront(T data)
{
if (Count == 0)
{
SetHeadItem(data);
return;
}
var item = new DuplexItem <T>(data);
item.Previous = head;
tail.Next = item;
head = item;
Count++;
}
public void PushBack(T data)
{
if (Count == 0)
{
SetHeadItem(data);
return;
}
var item = new DuplexItem <T>(data);
item.Next = tail;
tail.Previous = item;
tail = item;
Count++;
}