Re: [boost] Advice on using iterator_adaptor

From: Thomas Witt (witt_at_[hidden])
Date: 2003-09-28 12:48:05

Thomas Witt wrote:

> 
> Hi Keith,
> 
> Just a short remark, more to follow.
> 
> Keith MacDonald wrote:
> 
>>
>>     class const_iterator
>>         : public boost_const_iterator
> 
> 
> This does not work, it never did and it never will. First rule of 
> iterators: Don't derive from an iterator.

Ok, I messed up. This does work. But

class iterator : public const_iterator { ... };

does not.

There is one thing I don't understand, why do you use ia at all. 
unsigned char* can be used as an iterator an AFAICS you do not adapt the 
underlying iterator in any way.

Thomas