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/string/hashable.cpp b/src/boost/libs/hana/example/string/hashable.cpp
new file mode 100644
index 00000000..a781fdef
--- /dev/null
+++ b/src/boost/libs/hana/example/string/hashable.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/hash.hpp>
+#include <boost/hana/not_equal.hpp>
+#include <boost/hana/string.hpp>
+namespace hana = boost::hana;
+
+
+// `hana::hash` returns a type uniquely representing the string. The hash is
+// perfect, meaning no two different strings have the same hash value.
+BOOST_HANA_CONSTANT_CHECK(hana::not_equal(
+    hana::hash(BOOST_HANA_STRING("abcdef")),
+    hana::hash(BOOST_HANA_STRING("abcdefg"))
+));
+
+int main() { }