ceph/src/boost/libs/hana/example/ext/boost/mpl/list/searchable.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/equal.hpp>
   7 #include <boost/hana/ext/boost/mpl/list.hpp>
   8 #include <boost/hana/find.hpp>
   9 #include <boost/hana/find_if.hpp>
  10 #include <boost/hana/optional.hpp>
  11 #include <boost/hana/type.hpp>
  12
  13 #include <boost/mpl/list.hpp>
  14 namespace hana = boost::hana;
  15 namespace mpl = boost::mpl;
  16
  17
  18 BOOST_HANA_CONSTANT_CHECK(
  19     hana::find_if(mpl::list<int, float, char const*>{}, hana::equal.to(hana::type_c<float>))
  20     ==
  21     hana::just(hana::type_c<float>)
  22 );
  23
  24 BOOST_HANA_CONSTANT_CHECK(
  25     hana::find(mpl::list<int, float, char const*>{}, hana::type_c<void>)
  26     ==
  27     hana::nothing
  28 );
  29
  30 int main() { }