...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::interprocess::operator!=
// In header: <boost/interprocess/allocators/node_allocator.hpp> template<typename T, typename S, std::size_t NPC> bool operator!=(const node_allocator< T, S, NPC > & alloc1, const node_allocator< T, S, NPC > & alloc2);