private List4 Find(object obj)
{
List4 current = _first;
while (current != null)
{
if (current.Holds(obj))
{
return(current);
}
current = ((List4)current._next);
}
return(null);
}
public virtual int IndexOf(object obj)
{
int index = 0;
List4 current = _first;
while (current != null)
{
if (current.Holds(obj))
{
return(index);
}
index++;
current = ((List4)current._next);
}
return(-1);
}
/// <summary>
/// removes an object from the Collection equals() comparison returns the
/// removed object or null, if none found
/// </summary>
public virtual bool Remove(object a_object)
{
List4 previous = null;
List4 current = _first;
while (current != null)
{
if (current.Holds(a_object))
{
_size--;
AdjustOnRemoval(previous, current);
Changed();
return(true);
}
previous = current;
current = ((List4)current._next);
}
return(false);
}