A token for producing a durable string_view from a temporary string.

Synopsis

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>