1 files changed, 21 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/ext/std/array/foldable.cpp b/src/boost/libs/hana/example/ext/std/array/foldable.cpp
new file mode 100644
index 000000000..cff38e1c1
--- /dev/null
+++ b/src/boost/libs/hana/example/ext/std/array/foldable.cpp
@@ -0,0 +1,21 @@
+// 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/ext/std/array.hpp>
+#include <boost/hana/unpack.hpp>
+
+#include <array>
+namespace hana = boost::hana;
+
+
+int main() {
+    std::array<int, 5> a = {{0, 1, 2, 3, 4}};
+
+    auto b = hana::unpack(a, [](auto ...i) {
+        return std::array<int, sizeof...(i)>{{(i + 10)...}};
+    });
+
+    BOOST_HANA_RUNTIME_CHECK(b == std::array<int, 5>{{10, 11, 12, 13, 14}});
+}