4 #include <boost/variant/apply_visitor.hpp>
8 using citer = std::string::const_iterator;
9 using criter = std::string::const_reverse_iterator;
11 citer first_not_ws(citer begin, citer end);
12 citer first_not_ws(criter begin, criter end);
13 std::string html_escape(const std::string& str);
14 criter reverse(citer it);
16 template<class... Args>
17 auto visit(Args&&... args) -> decltype(boost::apply_visitor(
18 std::forward<Args>(args)...))
20 return boost::apply_visitor(std::forward<Args>(args)...);