#include <type_traits>
-BOOST_HANA_NAMESPACE_BEGIN
+namespace boost { namespace hana {
//! @cond
template <typename X>
constexpr decltype(auto) not_t::operator()(X&& x) const {
static constexpr auto apply(Cond const&)
{ return hana::to<C>(detail::constant_from_not<C, Cond>{}); }
};
-BOOST_HANA_NAMESPACE_END
+}} // end namespace boost::hana
#endif // !BOOST_HANA_NOT_HPP