Re: Boost/Python: method overloading w/out default args

"Bruce Lowery " writes:

" wrote:

...

Using Boost/Python, how does one overload methods? For instance:

struct Bar { void func( const std::string& s ); void func( int i ); };

BOOST_PYTHON_MODULE( Foo ) { class_<Bar>( "Bar" ) .def( "func", &Bar::func ) .def( ??? ) ; }

The reference documentation discusses the BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS macro, but it only seems to apply to methods with default arguments.

--bruce

I should have scanned the python c++ SIG first. Also now realize that python.boost questions are preferred on that list rather than here.

For future newbie reference, solution to above appears to be:

struct Bar { void func( const std::string& s ); void func( int i ); };

BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS( Bar_func_overloads, Bar::func, 1, 1 )

BOOST_PYTHON_MODULE( Foo ) { class_<Bar>( "Bar" ) .def("func",(void(Bar::*)(const std::string&))0,Bar_func_overloads) .def("func",(void(Bar::*)(int))0,Bar_func_overloads) ; }

This is not really a good use of BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS. You should leave it out and do this instead: BOOST_PYTHON_MODULE( Foo ) { class_<Bar>( "Bar" ) .def("func" , static_cast(&Bar::func)) .def("func" , static_cast(&Bar::func)) ; } -- David Abrahams dave@boost-consulting.com * http://www.boost-consulting.com Boost support, enhancements, training, and commercial distribution