ceph/src/boost/libs/hana/example/is_disjoint.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/is_disjoint.hpp>
   7 #include <boost/hana/map.hpp>
   8 #include <boost/hana/not.hpp>
   9 #include <boost/hana/set.hpp>
  10 #include <boost/hana/tuple.hpp>
  11 #include <boost/hana/type.hpp>
  12
  13 #include <string>
  14 namespace hana = boost::hana;
  15 using namespace std::literals;
  16
  17
  18 int main() {
  19     // Tuples
  20     auto xs = hana::make_tuple(hana::int_c<1>, "alfa"s, hana::type_c<int>);
  21     auto ys = hana::make_tuple(hana::type_c<void>, hana::int_c<3>, "bravo"s);
  22     BOOST_HANA_RUNTIME_CHECK(hana::is_disjoint(xs, ys));
  23
  24     // Sets
  25     auto s1 = hana::make_set(hana::int_c<1>, hana::type_c<void>, hana::int_c<2>);
  26     auto s2 = hana::make_set(hana::type_c<char>, hana::type_c<int>, hana::int_c<1>);
  27     BOOST_HANA_CONSTANT_CHECK(!hana::is_disjoint(s1, s2));
  28
  29     // Maps
  30     auto vowels = hana::make_map(
  31         hana::make_pair(hana::char_c<'a'>, "alfa"s),
  32         hana::make_pair(hana::char_c<'e'>, "echo"s),
  33         hana::make_pair(hana::char_c<'i'>, "india"s)
  34         // ...
  35     );
  36
  37     auto consonants = hana::make_map(
  38         hana::make_pair(hana::char_c<'b'>, "bravo"s),
  39         hana::make_pair(hana::char_c<'c'>, "charlie"s),
  40         hana::make_pair(hana::char_c<'f'>, "foxtrot"s)
  41         // ...
  42     );
  43
  44     BOOST_HANA_CONSTANT_CHECK(hana::is_disjoint(vowels, consonants));
  45 }