[boost] iterator_adaptor: underlying iterator type?

20 May 2005

      Currently 'iterator_adaptor' exposes its underlying iterator _object_
(through 'base()'), but not its type, which stands in the way of a
generic code manipilating adapted iterators/sequences, e.g.:

    template<
          typename Sequence
        >
    mtn::iterator_range< typename Sequence::iterator::base_type >
                                                //  ^^^^^^^^^^^ 
                                                // currently unavailable
    base_view( Sequence& seq )
        {
        return mtn::make_iterator_range(
              seq.begin().base()
            , seq.end().base()
            );
        }

Any objections if I add the typedef (and update the docs
correspondingly)?

-- 
Aleksey Gurtovoy
MetaCommunications Engineering