diff options
Diffstat (limited to 'src/boost/libs/hana/example/map/erase_key.cpp')
-rw-r--r-- | src/boost/libs/hana/example/map/erase_key.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/map/erase_key.cpp b/src/boost/libs/hana/example/map/erase_key.cpp new file mode 100644 index 000000000..2ba407145 --- /dev/null +++ b/src/boost/libs/hana/example/map/erase_key.cpp @@ -0,0 +1,33 @@ +// 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); +} |