id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
2960,"Composing argument pack formed with positional arguments, using the comma operator",e_r,Daniel Wallin,"Due to a  bug (or perhaps my misusage), I am unable to compose two argument packs, each formed using positional arguments, using the comma operator.

news://news.gmane.org:119/grtmb9$tpq$1@ger.gmane.org
Compiler : i686-apple-darwin9-gcc-4.0.1

BOOST_PARAMETER_KEYWORD(tag, x)
BOOST_PARAMETER_KEYWORD(tag, y)
template<class ArgumentPack>
void f(ArgumentPack const & args){
     double x_val = args[x];
     double y_val = args[y];
}

    typedef boost::parameter::parameters<
        parameter::required<tag::x>
    > par_x_t;
    typedef boost::parameter::parameters<
        parameter::required<tag::y>
    > par_y_t;

     double x_val = 9.0;
     double y_val = 0.1;
     spec_x_t spec_x;
     spec_y_t spec_y;
     f(
         ( spec_x(x_val),spec_y(y_val))         
     ); //no match operator[<unnamed>::x] 



",Bugs,new,To Be Determined,parameter,Boost 1.37.0,Problem,,,