on Sun Feb 22 2009, Vladimir.Batov-AT-wrsa.com.au wrote:
Trying to use Boost.Parameter as Daniel showed. Wow, that's truly hairy stuff. Obviously I get it wrong somewhere as matching Parameters constructor cannot be found. I am trying to call
int ii = convert_to<int>("1", boost::convert_parameters::default_ = -1);
when I have declarations below as (I think) Daniel indicated.
namespace convert_parameters { BOOST_PARAMETER_NAME((from_, tag) from_) BOOST_PARAMETER_NAME((default_, tag) default_) }
template<class TypeOut, class ArgumentPack> TypeOut test(ArgumentPack const& args) { return TypeOut(); }
template< class TypeOut, class TypeIn, class A0> convert<TypeIn, TypeOut> convert_to(TypeIn const& value_in, A0 const& a0) { typedef parameter::parameters<parameter::required<convert_parameters::tag::from_> Parameters;
return test<TypeOut>(Parameters(value_in, a0)); }
Any help? Please?
I'm not sure what you're trying to accomplish here, or what error message you got, but your ParameterSpec very clearly says that it accepts only one parameter (which is required), and you're passing it two. -- Dave Abrahams BoostPro Computing http://www.boostpro.com