hi, i'm following up on an earlier of my posts with a simpler example. in the example below: the overload is on argument-name and type, yet the overload is ambiguous. 1) is there a way around this? and if so, 2) is it also possible to have an overload the on argument-name only (replace string and int below by *). thanks. *.hpp namespace lib{ BOOST_PARAMETER_NAME(name) BOOST_PARAMETER_NAME(index) BOOST_PARAMETER_FUNCTION( (void), f, tag, (required (name,(std::string))) ) { std::cout << name << std::endl; } BOOST_PARAMETER_FUNCTION( (void), f, tag, (required (index,(int))) ) { std::cout << index << std::endl; } } *.cpp lib::f(lib::_name = "jill"); lib::f(lib::_index = 1); /home/er/cpp/libs/testing_names/par_fun.hpp||In function ‘typename lib::boost_param_result_27f::type>::type lib::f(const ParameterArgumentType0&, typename boost::parameter::aux::match::type) [with ParameterArgumentType0 = boost::parameter::aux::tagged_argument]’:| /home/er/cpp/libs/testing_names/main.cpp|28|instantiated from here| /home/er/cpp/libs/testing_names/par_fun.hpp|24|error: call of overloaded ‘boost_param_implf(boost::parameter::aux::arg_list, boost::parameter::aux::empty_arg_list>)’ is ambiguous| /home/er/cpp/libs/testing_names/par_fun.hpp|16|note: candidates are: typename lib::boost_param_result_19f<Args>::type lib::boost_param_implf(const Args&) [with Args = boost::parameter::aux::arg_list, boost::parameter::aux::empty_arg_list>]| /home/er/cpp/libs/testing_names/par_fun.hpp|24|note: typename lib::boost_param_result_27f<Args>::type lib::boost_param_implf(const Args&) [with Args = boost::parameter::aux::arg_list, boost::parameter::aux::empty_arg_list>]| /home/er/cpp/libs/testing_names/par_fun.hpp|24|error: return-statement with a value, in function returning 'void'| ||=== Build finished: 2 errors, 0 warnings ===|