1 files changed, 40 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/transform.cpp b/src/boost/libs/hana/example/transform.cpp
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+++ b/src/boost/libs/hana/example/transform.cpp
@@ -0,0 +1,40 @@
+// 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/equal.hpp>
+#include <boost/hana/optional.hpp>
+#include <boost/hana/transform.hpp>
+#include <boost/hana/tuple.hpp>
+#include <boost/hana/type.hpp>
+
+#include <sstream>
+#include <string>
+#include <type_traits>
+namespace hana = boost::hana;
+using namespace std::literals;
+
+
+auto to_string = [](auto x) {
+    std::ostringstream ss;
+    ss << x;
+    return ss.str();
+};
+
+int main() {
+    BOOST_HANA_RUNTIME_CHECK(
+        hana::transform(hana::make_tuple(1, '2', "345", std::string{"67"}), to_string)
+                ==
+        hana::make_tuple("1", "2", "345", "67")
+    );
+
+    BOOST_HANA_CONSTANT_CHECK(hana::transform(hana::nothing, to_string) == hana::nothing);
+    BOOST_HANA_RUNTIME_CHECK(hana::transform(hana::just(123), to_string) == hana::just("123"s));
+
+    BOOST_HANA_CONSTANT_CHECK(
+        hana::transform(hana::tuple_t<void, int(), char[10]>, hana::metafunction<std::add_pointer>)
+                ==
+        hana::tuple_t<void*, int(*)(), char(*)[10]>
+    );
+}