...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Return true if two addresses are not equal.
Defined in header <boost/url/ipv4_address.hpp>
friend bool operator!=( ipv4_address const& a1, ipv4_address const& a2);
Convenience header <boost/url.hpp>