#include <type_traits>
-BOOST_HANA_NAMESPACE_BEGIN
+namespace boost { namespace hana {
//! @cond
template <typename R>
constexpr decltype(auto) one_t<R>::operator()() const {
static constexpr decltype(auto) apply()
{ return hana::to<C>(detail::constant_from_one<C>{}); }
};
-BOOST_HANA_NAMESPACE_END
+}} // end namespace boost::hana
#endif // !BOOST_HANA_ONE_HPP