Re: Borland 5 and indirect_iterator

From: Drew (drewtenn_at_[hidden])
Date: 2003-05-19 18:20:16

--- In Boost-Users_at_[hidden], David Abrahams <dave_at_b...> wrote:
> Stephen Love <snl_at_e...> writes:
> 
> > Hi all,
> >
> > Using Borland C++Builder5 (which has bcc32 5.5.1) I've
> > attempted the tests for indirect_iterator which compile fine. 
However,
> > the following fails:
> >
> > list< shared_ptr< int > > ctr;
> >
> > void foo( int x ) { }
> >
> > for_each( make_indirect_iterator( ctr.begin() ),
> >           make_indirect_iterator( ctr.end() ),
> >           foo );
> >
> > with the first error being:
> >
> > [C++ Error] iterator.h(125): E2404 Dependent type qualifier
> > 'shared_ptr<int>' has no member type named 'difference_type'
> >
> > which then causes a failure to instantiate the iterator_traits. 
I'm no
> > template guru, so I can make the full error list available if 
required.
> > Anyone know what's going on?
> >
> 
> The current official Boost indirect_iterator doesn't work with 
smart
> pointers as advertised.  A much improved easier-to-use iterator
> adaptor library, which does, can be found in the Boost Sandbox CVS:
> 
>     http://www.boost.org/more/mailing_lists.htm#sandbox
> 
> See the boost/iterator and libs/iterator subdirectories.
> 
> Documentation at:
> 
>     http://www.boost-consulting.com/writing/facade-and-adaptor.html
> 
> It will replace the existing iterator adaptors before the next 
Boost
> release.
> 
> HTH,
> -- 
> Dave Abrahams
> Boost Consulting
> www.boost-consulting.com

Sounds like the solution I've been looking for today. Any news on 
when the next release of boost will be that will include this?

Regards,
Drew Tennenbaum