ceph/src/boost/libs/hana/example/fill.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/assert.hpp>
   6 #include <boost/hana/equal.hpp>
   7 #include <boost/hana/fill.hpp>
   8 #include <boost/hana/optional.hpp>
   9 #include <boost/hana/tuple.hpp>
  10 namespace hana = boost::hana;
  11
  12
  13 int main() {
  14     static_assert(
  15         hana::fill(hana::make_tuple(1, '2', 3.3, nullptr), 'x')
  16             ==
  17         hana::make_tuple('x', 'x', 'x', 'x')
  18     , "");
  19
  20     BOOST_HANA_CONSTANT_CHECK(hana::fill(hana::nothing, 'x') == hana::nothing);
  21     static_assert(hana::fill(hana::just('y'), 'x') == hana::just('x'), "");
  22 }