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- #ifndef BOOST_MP11_DETAIL_MP_MAP_FIND_HPP_INCLUDED
- #define BOOST_MP11_DETAIL_MP_MAP_FIND_HPP_INCLUDED
- // Copyright 2015 Peter Dimov.
- //
- // Distributed under the Boost Software License, Version 1.0.
- //
- // See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt
- #include <boost/mp11/utility.hpp>
- namespace boost
- {
- namespace mp11
- {
- // mp_map_find
- namespace detail
- {
- template<class M, class K> struct mp_map_find_impl;
- template<template<class...> class M, class... T, class K> struct mp_map_find_impl<M<T...>, K>
- {
- using U = mp_inherit<mp_identity<T>...>;
- template<template<class...> class L, class... U> static mp_identity<L<K, U...>> f( mp_identity<L<K, U...>>* );
- static mp_identity<void> f( ... );
- using V = decltype( f((U*)0) );
- using type = typename V::type;
- };
- } // namespace detail
- template<class M, class K> using mp_map_find = typename detail::mp_map_find_impl<M, K>::type;
- } // namespace mp11
- } // namespace boost
- #endif // #ifndef BOOST_MP11_DETAIL_MP_MAP_FIND_HPP_INCLUDED
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