public void InsertAfter(T node)
{
if (!(node is AbstractLinked <T> n))
{
return;
}
if (n._next != null || n._prev != null)
{
throw new ArgumentException("this item is already member of other linked list");
}
n._next = _next;
n._prev = this;
_next = n;
}
public void Remove()
{
if (_next == null && _prev == null)
{
throw new ArgumentException("this item is not a member of a linked list");
}
if (_prev != null)
{
_prev._next = _next;
_prev = null;
}
if (_next != null)
{
_next._prev = _prev;
_next = null;
}
}