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1 | |
2 | // (C) Copyright Edward Diener 2012,2013 | |
3 | // Use, modification and distribution are subject to the Boost Software License, | |
4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt). | |
6 | ||
7 | #if !defined(BOOST_TTI_DETAIL_PLACEHOLDER_HPP) | |
8 | #define BOOST_TTI_DETAIL_PLACEHOLDER_HPP | |
9 | ||
10 | #include <boost/mpl/lambda.hpp> | |
11 | #include <boost/mpl/not.hpp> | |
12 | #include <boost/type_traits/is_same.hpp> | |
13 | ||
14 | namespace boost | |
15 | { | |
16 | namespace tti | |
17 | { | |
18 | namespace detail | |
19 | { | |
20 | template <class BOOST_TTI_DETAIL_TP_T> | |
21 | struct is_placeholder_expression : | |
22 | boost::mpl::not_ | |
23 | < | |
24 | boost::is_same | |
25 | < | |
26 | typename boost::mpl::lambda<BOOST_TTI_DETAIL_TP_T>::type, | |
27 | BOOST_TTI_DETAIL_TP_T | |
28 | > | |
29 | > | |
30 | { | |
31 | }; | |
32 | } | |
33 | } | |
34 | } | |
35 | ||
36 | #endif // BOOST_TTI_DETAIL_PLACEHOLDER_HPP |