NULL pointers and None type

Hi,

Have a small problem here:
I've built an iterator:

class Iterator
{
   public:
       Iterator(CObject &O);
      
       void Next(void);

       CObject * Obj;
      
};

inline Iterator::Iterator(CObject &O) {Obj = &O;}

inline void Iterator::Next(void) {Obj = Obj->Next;}


That's fine:
but then I would like to be able to feed it a NULL pointer or a None 
statement so that Obj would just point to NULL.
>> I = Iterator(None)

I guess I could test before feeding the iterator anything, just 
wondering if there was a solution?

Any ideas???
Thanks

Alex

--
----------------------------
Alexander L. Tournier, PhD
 Cancer Research UK
 Lincoln's Inn Fields
 LONDON
Tel: 0207 269 3583
Fax: 0207 269 3258


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