[boost] Re: range_result_iterator

From: David Abrahams (dave_at_[hidden])
Date: 2005-05-04 11:39:32

"Peter Dimov" <pdimov_at_[hidden]> writes:

> Thorsten Ottosen wrote:
>> I guess the design could havebeen that way; but we don't say
>> container< const T >::iterator to get container<T>::const_iterator.
>
> Isn't range_iterator<R>::type the iterator type of the range R?

Yes, in a world where iterator and const_iterator are distinguished.

> Isn't it the return type of r.begin(), where r is of type R (in the
> typical container case)? 

Not when R is const.  In that case you get the const_iterator type.
Unless you live in the world I'm proposing, in which case the iterator
type of C const is C's const_iterator type.

> Doesn't r.begin() return R::const_iterator when R is const?

Yes.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com