[#4055400AFBD7629BCB684A1C9172EBC3739BF750]
Return a percent-encoded string
template< class StringToken = string_token::return_string, class CharSet> StringToken::result_type encode( core::string_view s, CharSet const& unreserved, encoding_opts opt = = {}, StringToken&& token) noexcept;
This function applies percent-encoding to the string using the given options and character set, and returns the result as a string when called with default arguments.
encoding_opts opt;
opt.space_as_plus = true;
std::string s = encode( "My Stuff", opt, pchars );
assert( s == "My+Stuff" );
Calls to allocate may throw.