...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
A token for producing a durable string_view from a temporary string.
Defined in header <boost/url/grammar/string_token.hpp>
template< class Allocator = std::allocator<char>> implementation-defined preserve_size( std::basic_string< char, std::char_traits< char >, Allocator >& s);
Convenience header <boost/url/grammar.hpp>