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31 lines
949 B
C++
31 lines
949 B
C++
/*
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@copyright Louis Dionne 2014
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/hana/assert.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <boost/hana/ext/std/integral_constant.hpp>
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#include <boost/hana/integral.hpp>
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#include <boost/hana/type.hpp>
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#include <type_traits>
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using namespace boost::hana;
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int main() {
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//! [liftable]
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BOOST_HANA_CONSTANT_CHECK(trait<std::is_integral>(type<int>));
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BOOST_HANA_CONSTANT_CHECK(not_(trait<std::is_integral>(type<float>)));
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//! [liftable]
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//! [nonliftable]
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BOOST_HANA_CONSTEXPR_LAMBDA auto extent = [](auto t, auto n) {
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return std::extent<typename decltype(t)::type, n()>{};
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};
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BOOST_HANA_CONSTANT_CHECK(extent(type<char>, int_<1>) == int_<0>);
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BOOST_HANA_CONSTANT_CHECK(extent(type<char[1][2]>, int_<1>) == int_<2>);
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//! [nonliftable]
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}
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