Adding upstream version 14.2.21.upstream/14.2.21upstream

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

1 files changed, 18 insertions, 0 deletions

diff --git a/src/boost/libs/hana/example/unpack.cpp b/src/boost/libs/hana/example/unpack.cpp
new file mode 100644
index 00000000..f2ceb5da
--- /dev/null
+++ b/src/boost/libs/hana/example/unpack.cpp
@@ -0,0 +1,18 @@
+// 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/config.hpp>
+#include <boost/hana/tuple.hpp>
+#include <boost/hana/unpack.hpp>
+namespace hana = boost::hana;
+
+
+int main() {
+    BOOST_HANA_CONSTEXPR_LAMBDA auto add = [](auto x, auto y, auto z) {
+        return x + y + z;
+    };
+
+    BOOST_HANA_CONSTEXPR_CHECK(hana::unpack(hana::make_tuple(1, 2, 3), add) == 6);
+}