1 files changed, 20 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/functional/lockstep.cpp b/src/boost/libs/hana/example/functional/lockstep.cpp
new file mode 100644
index 000000000..cbb8266ca
--- /dev/null
+++ b/src/boost/libs/hana/example/functional/lockstep.cpp
@@ -0,0 +1,20 @@
+// 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/functional/lockstep.hpp>
+#include <boost/hana/plus.hpp>
+namespace hana = boost::hana;
+
+
+constexpr int to_int(char c) {
+    return static_cast<int>(c) - 48;
+}
+
+constexpr int increment(int i) {
+    return i + 1;
+}
+
+static_assert(hana::lockstep(hana::plus)(to_int, increment)('3', 4) == 3 + 5, "");
+
+int main() { }