40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
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// Copyright 2015, 2017 Peter Dimov.
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//
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// Distributed under the Boost Software License, Version 1.0.
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//
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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#include <boost/mp11/utility.hpp>
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#include <boost/mp11/algorithm.hpp>
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#include <boost/core/lightweight_test_trait.hpp>
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#include <type_traits>
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using boost::mp11::mp_valid;
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using boost::mp11::mp_at;
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using boost::mp11::mp_size_t;
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using boost::mp11::mp_list;
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int main()
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{
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_at>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_at, void>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_at, void, void>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_at, void, void, void>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_at, void, mp_size_t<0>>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_at, mp_list<>, mp_size_t<0>>));
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BOOST_TEST_TRAIT_TRUE((mp_valid<mp_at, mp_list<void>, mp_size_t<0>>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_at, mp_list<void>, mp_size_t<1>>));
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BOOST_TEST_TRAIT_TRUE((mp_valid<mp_at, mp_list<void, void>, mp_size_t<0>>));
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BOOST_TEST_TRAIT_TRUE((mp_valid<mp_at, mp_list<void, void>, mp_size_t<1>>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_at, mp_list<void, void>, mp_size_t<2>>));
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return boost::report_errors();
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}
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