2 #ifndef BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED
3 #define BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED
5 // Copyright Aleksey Gurtovoy 2002-2004
6 // Copyright David Abrahams 2003
8 // Distributed under the Boost Software License, Version 1.0.
9 // (See accompanying file LICENSE_1_0.txt or copy at
10 // http://www.boost.org/LICENSE_1_0.txt)
12 // See http://www.boost.org/libs/mpl for documentation.
18 #include <boost/mpl/has_key_fwd.hpp>
19 #include <boost/mpl/aux_/traits_lambda_spec.hpp>
21 namespace boost { namespace mpl {
23 // no default implementation; the definition is needed to make MSVC happy
25 template< typename Tag > struct has_key_impl
27 template< typename AssociativeSequence, typename Key > struct apply;
30 BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,has_key_impl)
34 #endif // BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED