Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/src/boost/libs/hana/example/map/to.cpp b/src/boost/libs/hana/example/map/to.cpp
new file mode 100644
index 00000000..550c7665
--- /dev/null
+++ b/src/boost/libs/hana/example/map/to.cpp
@@ -0,0 +1,30 @@
+// 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/core/to.hpp>
+#include <boost/hana/map.hpp>
+#include <boost/hana/pair.hpp>
+#include <boost/hana/tuple.hpp>
+#include <boost/hana/type.hpp>
+
+#include <string>
+namespace hana = boost::hana;
+using namespace std::literals;
+
+
+int main() {
+    auto xs = hana::make_tuple(
+        hana::make_pair(hana::type_c<int>, "abcd"s),
+        hana::make_pair(hana::type_c<void>, 1234),
+        hana::make_pair(hana::type_c<int>, nullptr)
+    );
+
+    BOOST_HANA_RUNTIME_CHECK(
+        hana::to<hana::map_tag>(xs) == hana::make_map(
+            hana::make_pair(hana::type_c<int>, "abcd"s),
+            hana::make_pair(hana::type_c<void>, 1234)
+        )
+    );
+}