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);
+}