Adding upstream version 14.2.21.upstream/14.2.21upstream

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

1 files changed, 19 insertions, 0 deletions

diff --git a/src/boost/libs/hana/example/take_front.cpp b/src/boost/libs/hana/example/take_front.cpp
new file mode 100644
index 00000000..347619a7
--- /dev/null
+++ b/src/boost/libs/hana/example/take_front.cpp
@@ -0,0 +1,19 @@
+// 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/integral_constant.hpp>
+#include <boost/hana/take_front.hpp>
+#include <boost/hana/tuple.hpp>
+namespace hana = boost::hana;
+
+
+BOOST_HANA_CONSTANT_CHECK(hana::take_front(hana::make_tuple(1, '2', 3.3), hana::size_c<0>) == hana::make_tuple());
+static_assert(hana::take_front(hana::make_tuple(1, '2', 3.3), hana::size_c<1>) == hana::make_tuple(1), "");
+static_assert(hana::take_front(hana::make_tuple(1, '2', 3.3), hana::size_c<2>) == hana::make_tuple(1, '2'), "");
+static_assert(hana::take_front(hana::make_tuple(1, '2', 3.3), hana::size_c<3>) == hana::make_tuple(1, '2', 3.3), "");
+static_assert(hana::take_front(hana::make_tuple(1, '2', 3.3), hana::size_c<4>) == hana::make_tuple(1, '2', 3.3), "");
+
+int main() { }