Re: [Boost-users] iterator_facade and distance()

Subject: Re: [Boost-users] iterator_facade and distance()
From: Dave Abrahams (dave_at_[hidden])
Date: 2011-04-16 10:12:39

At Sat, 16 Apr 2011 21:35:29 +0900,
Andrej van der Zee wrote:
> 
> Hi Dave,
> 
> Thank you for your email.
> 
> >
> > You misspelled "distance_to." Â Fix the spelling and it should work better.
> >
> 
> Indeed a typo. Unfortunately, changing it to the method below does not
> change anything. The method is never called even though I explicitly
> call std::distance(), which, I assume, should call eventually
> distance_to(),
> 
>    facade_t::difference_type distance_to(const
> data_stream::const_iterator & to) const
>    {
>      abort();
>    }

Not unless yours is a random access iterator.  Is it?

-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com