David Abrahams wrote:
Are you saying that even when you follow the rule given by http://www.boost.org/libs/parameter/doc/html/index.html#headers-and-namespac..., you still get errors?
To clarify, this code (directly taken from the tutorial) doesn't compile due to incomplete types: #include <iostream> #include <ostream> #include <boost/parameter/keyword.hpp> // no errors when the combined header is used instead namespace graphs { BOOST_PARAMETER_KEYWORD(tag, graph) // Note: no semicolon BOOST_PARAMETER_KEYWORD(tag, visitor) BOOST_PARAMETER_KEYWORD(tag, root_vertex) BOOST_PARAMETER_KEYWORD(tag, index_map) BOOST_PARAMETER_KEYWORD(tag, color_map) } namespace graphs { namespace core { template <class ArgumentPack> void depth_first_search(ArgumentPack const& args) { std::cout << "graph:\t" << args[graph] << std::endl; std::cout << "visitor:\t" << args[visitor] << std::endl; std::cout << "root_vertex:\t" << args[root_vertex] << std::endl; std::cout << "index_map:\t" << args[index_map] << std::endl; std::cout << "color_map:\t" << args[color_map] << std::endl; } }} // graphs::core int main() { using namespace graphs; core::depth_first_search(( graph = 'G', visitor = 2, root_vertex = 3.5, index_map = "hello, world", color_map = false)); } Send instant messages to your online friends http://au.messenger.yahoo.com