#include <boost/hana/core/when.hpp>
-BOOST_HANA_NAMESPACE_BEGIN
+namespace boost { namespace hana {
//! Feed a monadic value into a monadic computation.
//! @ingroup group-Monad
//!
constexpr decltype(auto) operator()(Xs&& xs, F&& f) const;
};
- constexpr chain_t chain{};
+ BOOST_HANA_INLINE_VARIABLE constexpr chain_t chain{};
#endif
-BOOST_HANA_NAMESPACE_END
+}} // end namespace boost::hana
#endif // !BOOST_HANA_FWD_CHAIN_HPP