[C++-sig] Re: class_<>::add_property() on CVS-HEAD

[David Abrahams]

Jonathan Brandmeyer <jbrandmeyer at earthlink.net> writes:

> Is there a replacement for this functionality?
>
> Thanks,
> Jonathan Brandmeyer
>
> --------------------------------------------------------------
> #include <boost/python.hpp>
>
> namespace test {
>
> // Hmm.  return_internal_reference<>() wants to wrap a real class.
> class ret_type
> {
>  public:
> 	double i;
> };
>
> class crash_me
> {
> 	private:
> 		ret_type i;
> 	public:
> 		ret_type& get_i() { return i; }
> };
>
> }
>
> BOOST_PYTHON_MODULE( crash_test)
> {
> 	using namespace boost::python;
> 	
> 	class_< test::ret_type>( "ret_type")
> 		.def_readwrite( "i", &test::ret_type::i)
> 		;
> 	
> 	class_< test::crash_me> crash_me_wrapper( "crash_me");
> 	
> 	crash_me_wrapper
> 		.def( "get_i", &test::crash_me::get_i , return_internal_reference<>())
> 		;
> 	
> 	// The following works under Boost 1.30, but not CVS-HEAD 
> 	// (sourceforge repository).
> 	crash_me_wrapper.add_property( "i", crash_me_wrapper.attr("get_i"));
> }

Jonathan,

Sorry it took so long to respond; I'll fix it in CVS momentarily.
In the meantime, you can use:

 	crash_me_wrapper.add_property( 
        "i", object(crash_me_wrapper.attr("get_i"))
    ); 

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