Boost C++ Libraries: Ticket #1327: iterator value_type possibly cv-qualified

Thorsten Ottosen — Fri, 26 Oct 2007 23:37:14 GMT

AFAICT, you can't even use boost::ptr_vector<int const>, because the whole library has not been designed/tested with this in mind.

Standard containers don't support this. Can you describe why it is useful?

-Thorsten

Sat, 27 Oct 2007 00:55:22 GMT

Replying to nesotto:

the whole library has not been designed/tested with this in mind.

I didn't know that. Sorry for the noise.

-- Shunsuke Sogame

Sat, 27 Oct 2007 01:37:23 GMT

Replying to nesotto:

AFAICT, you can't even use boost::ptr_vector<int const>, because the whole library has not been designed/tested with this in mind.

Sorry again.

See this:

#include <boost/ptr_container/ptr_vector.hpp>
#include <boost/range/const_iterator.hpp>
#include <boost/mpl/assert.hpp>
int main()
{
    typedef boost::range_const_iterator< boost::ptr_vector<int> >::type citer_t;
    BOOST_MPL_ASSERT((boost::is_same<citer_t::value_type, int const>)); // pass
    BOOST_MPL_ASSERT((boost::is_same<citer_t::value_type, int>)); // failed
}

This seems a bug.

Shunsuke Sogame

status changed; resolution set

Thorsten Ottosen — Sat, 17 Nov 2007 21:43:41 GMT

status new → closed
resolution → fixed

Should be fixed...