private V Scan(Entry <V> n, PackFile pack, long position)
{
for (; n != null; n = n.Next)
{
Ref <V> r = n.Ref;
if (r.pack == pack && r.position == position)
{
V v = r.get();
if (v != null)
{
Hit(r);
return(v);
}
n.Kill();
break;
}
}
return(null);
}