#include <di/meta/compare.h>

Concept definition

template<typename T, typename U>
concept di::concepts::EqualityComparableWith = 
    detail::DefinitelyEqualityComparableWith<T, U>::value ||
    (EqualityComparable<T> && EqualityComparable<U> && detail::WeaklyEqualityComparableWith<T, U>)