[C++-sig] Re: def( str( self)) error

[David Abrahams]

Jonathan Brandmeyer <jbrandmeyer at earthlink.net> writes:

> using namespace boost::python;
>
> BOOST_PYTHON_MODULE(libphysics)
> {
>   class_< physics::vector>( "vector")
>     .def( str( self))
>     ;
> }
>
> compiled with:
> $ g++-3.2 -c -o testme.lo -fpic -I/usr/include/python2.2 testme.cpp
> testme.cpp: In function `void init_module_libphysics()':
> testme.cpp:67: no matching function for call to `
>    boost::python::class_<physics::vector,
> boost::python::detail::not_specified,
>    boost::python::detail::not_specified,
> boost::python::detail::not_specified>
>    ::def(boost::python::str)'

Easy workaround:

    BOOST_PYTHON_MODULE(libphysics)
    {
      class_< physics::vector>( "vector")
        .def( self_ns::str( self))
              ^^^^^^^^^
        ;
    }

GCC seems to have some problems with the Koenig Lookup rules :(.

-Dave
        
-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com