48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
// Copyright Louis Dionne 2013-2017
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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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#include <boost/hana/assert.hpp>
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#include <boost/hana/equal.hpp>
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#include <boost/hana/intersection.hpp>
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#include <boost/hana/map.hpp>
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#include <boost/hana/string.hpp>
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#include <string>
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namespace hana = boost::hana;
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using namespace hana::literals;
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constexpr auto m1 = hana::make_map(
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hana::make_pair("key1"_s, hana::type_c<std::string>),
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hana::make_pair("key2"_s, hana::type_c<std::string>)
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);
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constexpr auto m2 = hana::make_map(
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hana::make_pair("key3"_s, hana::type_c<std::string>),
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hana::make_pair("key4"_s, hana::type_c<std::string>),
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hana::make_pair("key5"_s, hana::type_c<std::string>)
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);
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BOOST_HANA_CONSTANT_CHECK(hana::intersection(m1, m2) == hana::make_map());
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constexpr auto m3 = hana::make_map(
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hana::make_pair(hana::type_c<int>, hana::int_c<1>),
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hana::make_pair(hana::type_c<bool>, hana::bool_c<true>),
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hana::make_pair(hana::type_c<std::string>, "hana"_s),
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hana::make_pair(hana::type_c<float>, hana::int_c<100>)
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);
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constexpr auto m4 = hana::make_map(
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hana::make_pair(hana::type_c<char>, hana::char_c<'c'>),
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hana::make_pair(hana::type_c<bool>, hana::bool_c<false>),
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hana::make_pair(hana::type_c<std::string>, "boost"_s)
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);
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BOOST_HANA_CONSTANT_CHECK(hana::intersection(m3, m4) == hana::make_map(
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hana::make_pair(hana::type_c<bool>, hana::bool_c<true>),
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hana::make_pair(hana::type_c<std::string>, "hana"_s)
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));
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int main() { }
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