Adding upstream version 14.2.21.upstream/14.2.21upstream

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

1 files changed, 33 insertions, 0 deletions

diff --git a/src/boost/libs/hana/example/permutations.cpp b/src/boost/libs/hana/example/permutations.cpp
new file mode 100644
index 00000000..413c24c6
--- /dev/null
+++ b/src/boost/libs/hana/example/permutations.cpp
@@ -0,0 +1,33 @@
+// 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/all_of.hpp>
+#include <boost/hana/assert.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/contains.hpp>
+#include <boost/hana/functional/curry.hpp>
+#include <boost/hana/permutations.hpp>
+#include <boost/hana/tuple.hpp>
+namespace hana = boost::hana;
+
+
+BOOST_HANA_CONSTEXPR_LAMBDA auto is_permutation_of = hana::curry<2>([](auto xs, auto perm) {
+    return hana::contains(hana::permutations(xs), perm);
+});
+
+int main() {
+    BOOST_HANA_CONSTEXPR_CHECK(
+        hana::all_of(
+            hana::make_tuple(
+                hana::make_tuple('1', 2, 3.0),
+                hana::make_tuple('1', 3.0, 2),
+                hana::make_tuple(2, '1', 3.0),
+                hana::make_tuple(2, 3.0, '1'),
+                hana::make_tuple(3.0, '1', 2),
+                hana::make_tuple(3.0, 2, '1')
+            ),
+            is_permutation_of(hana::make_tuple('1', 2, 3.0))
+        )
+    );
+}