46 lines
1.6 KiB
C++
46 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/difference.hpp>
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#include <boost/hana/equal.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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static auto m1 = hana::make_map(
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hana::make_pair(BOOST_HANA_STRING("key1"), hana::type_c<std::string>),
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hana::make_pair(BOOST_HANA_STRING("key2"), hana::type_c<std::string>)
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);
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static auto m2 = hana::make_map(
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hana::make_pair(BOOST_HANA_STRING("key3"), hana::type_c<std::string>),
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hana::make_pair(BOOST_HANA_STRING("key4"), hana::type_c<std::string>),
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hana::make_pair(BOOST_HANA_STRING("key5"), hana::type_c<std::string>)
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);
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static auto m3 = hana::make_map(
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hana::make_pair(BOOST_HANA_STRING("key1"), hana::type_c<std::string>),
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hana::make_pair(BOOST_HANA_STRING("key4"), hana::type_c<int>),
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hana::make_pair(BOOST_HANA_STRING("key2"), hana::type_c<long long>)
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);
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int main() {
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BOOST_HANA_CONSTANT_CHECK(hana::difference(m1, m2) == m1);
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BOOST_HANA_CONSTANT_CHECK(hana::difference(m1, m3) == hana::make_map());
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BOOST_HANA_CONSTANT_CHECK(hana::difference(m3, m1) == hana::make_map(
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hana::make_pair(BOOST_HANA_STRING("key4"), hana::type_c<int>)
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));
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BOOST_HANA_CONSTANT_CHECK(hana::difference(m2, m3) == hana::make_map(
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hana::make_pair(BOOST_HANA_STRING("key3"), hana::type_c<std::string>),
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hana::make_pair(BOOST_HANA_STRING("key5"), hana::type_c<std::string>)
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));
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}
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