Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
This is an older version of Boost and was released in 2024. The current version is 1.90.0.
boost::movelib::operator<
// In header: <boost/move/unique_ptr.hpp> template<typename T, typename D> bool operator<(std::nullptr_t, const unique_ptr< T, D > & x);
Requires: operator shall induce a strict weak ordering on unique_ptr<T, D>::pointer values.
Returns: Returns pointer() < x.get().