hashable.cpp 647 B

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  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. #include <boost/hana/assert.hpp>
  5. #include <boost/hana/hash.hpp>
  6. #include <boost/hana/not_equal.hpp>
  7. #include <boost/hana/string.hpp>
  8. namespace hana = boost::hana;
  9. // `hana::hash` returns a type uniquely representing the string. The hash is
  10. // perfect, meaning no two different strings have the same hash value.
  11. BOOST_HANA_CONSTANT_CHECK(hana::not_equal(
  12. hana::hash(BOOST_HANA_STRING("abcdef")),
  13. hana::hash(BOOST_HANA_STRING("abcdefg"))
  14. ));
  15. int main() { }