Re: [Boost-users] [iterators][range] size compile failure in 1.35

From: David Abrahams (dave_at_[hidden])
Date: 2008-06-06 11:45:33

on Fri Jun 06 2008, Jeff Flinn <TriumphSprint2000-AT-hotmail.com> wrote:

> I'm moving from 1.34.1 to 1.35.0
>
> The following compiles in 1.34.1 and fails in 1.35.0 on MSVC 8. Any 
> thoughts on how to correct this?

Jeff,

in 1.35 I'm pretty sure that iterator_range<T>::size() only works when T
is a random access iterator, and filtered iterators are by necessity
bidirectional.  I suggest you use

                std::distance(r.begin(), r.end())

if you're willing to pay for O(N) execution.

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