[#25A058F6DE2B18FB2927C6184F02331299E865D8]
Return the result of comparing two URLs
friend bool operator!=( url_view_base const& u0, url_view_base const& u1) noexcept;
The URLs are compared component by component as if they were first normalized.
url_view u0( "http://www.a.com/index.htm" );
url_view u1( "http://www.b.com/index.htm" );
assert( u0 != u1 );
url a(u0);
a.normalize();
url b(u1);
b.normalize();
return std::make_tuple(
a.scheme(),
a.user(),
a.password(),
a.host(),
a.port(),
a.path(),
a.query(),
a.fragment()) !=
std::make_tuple(
b.scheme(),
b.user(),
b.password(),
b.host(),
b.port(),
b.path(),
b.query(),
b.fragment());
Linear in `min( u0.size(), u1.size() )`
Throws nothing