Return true if the url is empty
bool
empty() noexcept;
Declared in file <boost/url/url_view_base.hpp> at line 201
The empty string matches the relative-ref grammar.
assert( url_view( "" ).empty() );
Constant.
Throws nothing.
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
relative-part = "//" authority path-abempty
/ path-absolute
/ path-noscheme
/ path-empty