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46 lines
1.2 KiB
C++
46 lines
1.2 KiB
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/detail/constexpr.hpp>
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#include <boost/hana/foreign.hpp>
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#include <boost/hana/integral.hpp>
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#include <boost/hana/map.hpp>
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#include <boost/hana/maybe.hpp>
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#include <boost/hana/pair.hpp>
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#include <boost/hana/type.hpp>
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#include <string>
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using namespace boost::hana;
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int main() {
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//! [comparable]
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BOOST_HANA_RUNTIME_ASSERT(
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map(
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pair(char_<'a'>, std::string{"foobar"}),
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pair(type<int&&>, nullptr)
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)
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==
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map(
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pair(type<int&&>, (void*)0),
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pair(char_<'a'>, "foobar")
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)
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);
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//! [comparable]
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//! [searchable]
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BOOST_HANA_CONSTEXPR_LAMBDA auto m = map(
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pair(type<int>, 'i'),
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pair(type<float>, 'f')
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);
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BOOST_HANA_CONSTEXPR_ASSERT(lookup(m, type<int>) == just('i'));
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BOOST_HANA_CONSTEXPR_ASSERT(lookup(m, type<float>) == just('f'));
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BOOST_HANA_CONSTANT_ASSERT(lookup(m, type<void>) == nothing);
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BOOST_HANA_CONSTANT_ASSERT(lookup(m, int_<3>) == nothing);
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//! [searchable]
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}
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