Re: [Boost-users] [fusion][mpl][array] making boost array a conforming mpl sequence (through fusion)

Subject: Re: [Boost-users] [fusion][mpl][array] making boost array a conforming mpl sequence (through fusion)
From: Joel de Guzman (joel_at_[hidden])
Date: 2009-02-10 22:10:24

Stjepan Rajko wrote:
> Hi,
> 
> I tried to make boost::array a conforming MPL sequence by including:
> 
> #include <boost/fusion/adapted/array.hpp> // makes array a conforming
> fusion sequence
> #include <boost/fusion/mpl.hpp> // makes fusion sequences conforming
> MPL sequences
> 
> but,
> 
> typedef boost::array<int, 1> array;
> assert(boost::mpl::is_sequence<array>::type::value);  // fails
> 
> Am I misinterpreting the fusion documentation in expecting that this
> should work?  Is there another way of making boost::array an mpl
> sequence?

I think the basic problem is that is_sequence is not really part
of the requirements for an MPL sequence. You don't have to be a
conforming MPL sequences. I am not sure how to best approach this.
Perhaps the MPL authors have a better idea?

Regards,
-- 
Joel de Guzman
http://www.boostpro.com
http://spirit.sf.net