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- // Copyright Louis Dionne 2013-2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #include <boost/hana/assert.hpp>
- #include <boost/hana/erase_key.hpp>
- #include <boost/hana/map.hpp>
- #include <boost/hana/pair.hpp>
- #include <boost/hana/string.hpp>
- #include <boost/hana/type.hpp>
- #include <string>
- namespace hana = boost::hana;
- using namespace std::literals;
- int main() {
- auto m = hana::make_map(
- hana::make_pair(hana::type_c<int>, "abcd"s),
- hana::make_pair(hana::type_c<void>, 1234),
- hana::make_pair(BOOST_HANA_STRING("foobar!"), hana::type_c<char>)
- );
- BOOST_HANA_RUNTIME_CHECK(
- hana::erase_key(m, BOOST_HANA_STRING("foobar!")) ==
- hana::make_map(
- hana::make_pair(hana::type_c<int>, "abcd"s),
- hana::make_pair(hana::type_c<void>, 1234)
- )
- );
- BOOST_HANA_RUNTIME_CHECK(hana::erase_key(m, hana::type_c<char>) == m);
- }
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