Hello dear authors of boost tuple libraries! I've a need to implement a function that gets a tuple of manipulators and applies them to stream: template <typename T, typename Tuple> std::string string_from(T const& t, Tuple const& manip) { std::stringstream ss; ss << manip << t; return ss.str(); } usage of this function would be: std::string s = string_from(1.2, boost::make_tuple(std::setprecision(2), std::scientific)); The problem is: how I can efficiently suppress output of left/right/delimiter strings? Of cause, with fusion::tuple I can do the following (manipulator names are taken from boost::tuple docs, though): template <typename T, typename Tuple> std::string string_from(T const& t, Tuple const& manip) { std::stringstream ss; ss << set_open("") << set_close("") << set_delimiter("") << manip << t; return ss.str(); } but it has a lot of overhead in tuple's output iterator that should be avoided for me. I feel that the best solution would be to have a function "print_tuple(stream, tuple)" in tuples library that just do what I want. One more issue with fusion::tuple manipulators as they are in boost 1.33.1 (unofficially): I've discovered that only narrow strings and characters are supported. am I right? If so, I believe that wide versions should be added too. Best regards, Oleg Abrosimov.