1 files changed, 48 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/ap.cpp b/src/boost/libs/hana/example/ap.cpp
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+++ b/src/boost/libs/hana/example/ap.cpp
@@ -0,0 +1,48 @@
+// 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/ap.hpp>
+#include <boost/hana/assert.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/optional.hpp>
+#include <boost/hana/tuple.hpp>
+
+#include <functional>
+namespace hana = boost::hana;
+
+
+int main() {
+    // with tuples
+    static_assert(
+        hana::ap(hana::make_tuple(std::plus<>{}), hana::make_tuple(1, 2),
+                                                  hana::make_tuple(3, 4, 5))
+            ==
+        hana::make_tuple(
+            1 + 3,      1 + 4,      1 + 5,
+            2 + 3,      2 + 4,      2 + 5
+        )
+    , "");
+
+    // with optional values
+    BOOST_HANA_CONSTEXPR_LAMBDA auto multiply = [](auto a, auto b, auto c) {
+        return a * b * c;
+    };
+
+    BOOST_HANA_CONSTEXPR_CHECK(
+        hana::ap(hana::just(multiply), hana::just(1),
+                                       hana::just(2),
+                                       hana::just(3))
+            ==
+        hana::just(1 * 2 * 3)
+    );
+
+    BOOST_HANA_CONSTANT_CHECK(
+        hana::ap(hana::just(multiply), hana::just(1),
+                                       hana::nothing,
+                                       hana::just(3))
+            ==
+        hana::nothing
+    );
+}