ceph/src/boost/libs/hana/example/sequence/applicative.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/ap.hpp>
   6 #include <boost/hana/equal.hpp>
   7 #include <boost/hana/ext/std/tuple.hpp>
   8 #include <boost/hana/functional/flip.hpp>
   9 #include <boost/hana/lift.hpp>
  10 #include <boost/hana/pair.hpp>
  11 #include <boost/hana/tuple.hpp>
  12
  13 #include <tuple>
  14 namespace hana = boost::hana;
  15
  16
  17 static_assert(hana::lift<hana::tuple_tag>('x') == hana::make_tuple('x'), "");
  18 static_assert(hana::equal(hana::lift<hana::ext::std::tuple_tag>('x'), std::make_tuple('x')), "");
  19
  20 constexpr auto f = hana::make_pair;
  21 constexpr auto g = hana::flip(hana::make_pair);
  22 static_assert(
  23     hana::ap(hana::make_tuple(f, g), hana::make_tuple(1, 2, 3), hana::make_tuple('a', 'b'))
  24         ==
  25     hana::make_tuple(
  26         f(1, 'a'), f(1, 'b'), f(2, 'a'), f(2, 'b'), f(3, 'a'), f(3, 'b'),
  27         g(1, 'a'), g(1, 'b'), g(2, 'a'), g(2, 'b'), g(3, 'a'), g(3, 'b')
  28     )
  29 , "");
  30
  31 int main() { }