ceph/src/boost/libs/hana/example/tutorial/ext/fusion_to_hana.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/for_each.hpp>
   6 #include <boost/hana/tuple.hpp>
   7 #include <boost/hana/ext/boost/fusion/vector.hpp>
   8
   9 #include <boost/fusion/include/vector.hpp>
  10
  11 #include <iostream>
  12 namespace fusion = boost::fusion;
  13 namespace hana = boost::hana;
  14
  15
  16 //! [main]
  17 // In the old code, this used to receive a Fusion sequence.
  18 // Now, it can be either a Hana sequence or a Fusion sequence.
  19 template <typename Sequence>
  20 void f(Sequence const& seq) {
  21     hana::for_each(seq, [](auto const& element) {
  22         std::cout << element << std::endl;
  23     });
  24 }
  25 //! [main]
  26
  27
  28 int main() {
  29     f(hana::make_tuple(1, 2, 3));
  30     f(fusion::make_vector(1, 2, 3));
  31 }