id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
3225	boost::fusion sequence throws compiler error when used with boost::mpl::is_sequence	Jeffrey Hellrung <jhellrung@…>	Joel de Guzman	"The boost::fusion documentation states in the Introduction section

    ""Fusion sequences are fully conforming MPL sequences ...""

It seems incorrect, then, that the following code does not compile (boost version 1.39 with MSVC 9):

{{{

#include <boost/fusion/container/vector.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/is_sequence.hpp>

int main(int argc, char* argv[])
{
    typedef boost::fusion::vector1< int > vector_type;
    static const bool b = boost::mpl::is_sequence< vector_type >::value;
    return 0;
}

}}}

Would someone please explain what the deal is?

The compiler output is attached.

I have found both boost::fusion and boost::mpl (otherwise) extremely useful!

Thanks!

- Jeff
"	Bugs	closed	Boost 1.40.0	fusion	Boost 1.39.0	Problem	fixed	fusion mpl is_sequence