ceph/src/boost/libs/hana/example/pair/foldable.cpp

   1 // Copyright Louis Dionne 2013-2016
   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/fold_left.hpp>
   6 #include <boost/hana/fold_right.hpp>
   7 #include <boost/hana/minus.hpp>
   8 #include <boost/hana/pair.hpp>
   9 #include <boost/hana/plus.hpp>
  10 namespace hana = boost::hana;
  11
  12
  13 static_assert(hana::fold_left(hana::make_pair(1, 3), 0, hana::plus) == 4, "");
  14 static_assert(hana::fold_right(hana::make_pair(1, 3), 0, hana::minus) == -2, "");
  15
  16 int main() { }