ceph/src/boost/libs/hana/example/string/hashable.cpp

   1 // Copyright Louis Dionne 2013-2017
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/hana/assert.hpp>
   6 #include <boost/hana/hash.hpp>
   7 #include <boost/hana/not_equal.hpp>
   8 #include <boost/hana/string.hpp>
   9 namespace hana = boost::hana;
  10
  11
  12 // `hana::hash` returns a type uniquely representing the string. The hash is
  13 // perfect, meaning no two different strings have the same hash value.
  14 BOOST_HANA_CONSTANT_CHECK(hana::not_equal(
  15     hana::hash(BOOST_HANA_STRING("abcdef")),
  16     hana::hash(BOOST_HANA_STRING("abcdefg"))
  17 ));
  18
  19 int main() { }