...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Format a string to an output stream.
Defined in header <boost/url/grammar/string_view_base.hpp>
std::ostream& operator<<( std::ostream& os, string_view_base const& s);
Convenience header <boost/url/grammar.hpp>