#include <boost/hana/config.hpp>
-BOOST_HANA_NAMESPACE_BEGIN
+namespace boost { namespace hana {
//! @ingroup group-functional
//! The identity function -- returns its argument unchanged.
//!
}
};
- constexpr id_t id{};
+ BOOST_HANA_INLINE_VARIABLE constexpr id_t id{};
#endif
-BOOST_HANA_NAMESPACE_END
+}} // end namespace boost::hana
#endif // !BOOST_HANA_FUNCTIONAL_ID_HPP