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29 lines
973 B
C++
29 lines
973 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/detail/assert.hpp>
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#include <boost/hana/ext/std/integral_constant.hpp>
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#include <boost/hana/functional.hpp>
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#include <boost/hana/list/instance.hpp>
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#include <boost/hana/maybe.hpp>
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#include <boost/hana/type.hpp>
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#include <boost/hana/type_list.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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//! [main]
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BOOST_HANA_CONSTEXPR_ASSERT(find(list(1.0, 2, '3'), trait_<std::is_integral>) == just(2));
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BOOST_HANA_CONSTANT_ASSERT(find(list(1.0, 2, '3'), trait_<std::is_class>) == nothing);
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constexpr auto types = type_list<char, int, unsigned, long, unsigned long>;
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BOOST_HANA_CONSTANT_ASSERT(find(types, _ == type<unsigned>) == just(type<unsigned>));
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BOOST_HANA_CONSTANT_ASSERT(find(types, _ == type<void>) == nothing);
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//! [main]
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}
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