Hello all, I have been looking to which Boost libraries provide an interface that "spoils" usual C++ function declaration using macros. So far I found that both Boost.ConceptCheck and Boost.Parameter replace usual C++ function declaration using macros (see sample code below). Do you know of any other Boost library that "spoils" usual C++ function declaration? Boost.ConceptCheck: template<typename RanIter> BOOST_CONCEPT_REQUIRES( ((Mutable_RandomAccessIterator<RanIter>)) ((LessThanComparable<typename Mutable_RandomAccessIterator<RanIter>::value_type>)), (void)) // return type within macro instead that before function name stable_sort(RanIter,RanIter) { ... } Boost.Parameter (quite a bit more involved): BOOST_PARAMETER_FUNCTION( (void), // 1. parenthesized return type depth_first_search, // 2. name of the function template tag, // 3. namespace of tag types (required (graph, *) ) // 4. one required parameter, and (optional // four optional parameters, with defaults (visitor, *, boost::dfs_visitor<>()) (root_vertex, *, *vertices(graph).first) (index_map, *, get(boost::vertex_index,graph)) (in_out(color_map), *, default_color_map(num_vertices(graph), index_map) ) ) ) { // ... body of function goes here... // use graph, visitor, index_map, and color_map } Thank you very much. -- Lorenzo