1 public class Set
<Element
>
3 protected readonly Node
[] sub
;
8 public delegate void Replace (Node node
);
9 public Locator (Replace put
) { }
12 public class Node
: Set
<Element
>
15 protected Locator
locate (Element x
)
17 Set
<Element
> parent
= this;
18 return new Locator (new Locator
.Replace (delegate (Node n
) {
26 public static void Main ()