ceph/src/boost/libs/hana/example/ext/boost/mpl/list/iterable.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/drop_front.hpp>
   7 #include <boost/hana/drop_while.hpp>
   8 #include <boost/hana/equal.hpp>
   9 #include <boost/hana/ext/boost/mpl/list.hpp>
  10 #include <boost/hana/ext/std/integral_constant.hpp>
  11 #include <boost/hana/front.hpp>
  12 #include <boost/hana/type.hpp>
  13
  14 #include <boost/mpl/list.hpp>
  15 #include <type_traits>
  16 namespace hana = boost::hana;
  17 namespace mpl = boost::mpl;
  18
  19
  20 BOOST_HANA_CONSTANT_CHECK(hana::front(mpl::list<int, char, void>{}) == hana::type_c<int>);
  21
  22 BOOST_HANA_CONSTANT_CHECK(hana::equal(
  23     hana::drop_front(mpl::list<int, char, void>{}),
  24     mpl::list<char, void>{}
  25 ));
  26
  27 BOOST_HANA_CONSTANT_CHECK(hana::equal(
  28     hana::drop_while(mpl::list<float, double const, int, float&>{},
  29                      hana::trait<std::is_floating_point>),
  30     mpl::list<int, float&>{}
  31 ));
  32
  33 int main() { }