Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

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

1 files changed, 17 insertions, 0 deletions

diff --git a/src/boost/libs/hana/example/lazy/functor.cpp b/src/boost/libs/hana/example/lazy/functor.cpp
new file mode 100644
index 000000000..5fa20ab3b
--- /dev/null
+++ b/src/boost/libs/hana/example/lazy/functor.cpp
@@ -0,0 +1,17 @@
+// 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/eval.hpp>
+#include <boost/hana/functional/placeholder.hpp>
+#include <boost/hana/lazy.hpp>
+#include <boost/hana/transform.hpp>
+namespace hana = boost::hana;
+using hana::_;
+
+
+int main() {
+    static_assert(hana::eval(hana::transform(hana::make_lazy(4 / _)(1), _ * 3)) == (4 / 1) * 3, "");
+
+    hana::transform(hana::make_lazy(4 / _)(0), _ * 3); // never evaluated
+}