ceph/src/boost/libs/hana/benchmark/fold_left/compile.hana.basic_tuple.erb.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/fold_left.hpp>
   6 #include <boost/hana/basic_tuple.hpp>
   7 namespace hana = boost::hana;
   8
   9
  10 struct f {
  11     template <typename State, typename X>
  12     constexpr X operator()(State, X x) const { return x; }
  13 };
  14
  15 struct state { };
  16
  17 template <int i>
  18 struct x { };
  19
  20 int main() {
  21     constexpr auto tuple = hana::make_basic_tuple(
  22         <%= (1..input_size).map { |n| "x<#{n}>{}" }.join(', ') %>
  23     );
  24     constexpr auto result = hana::fold_left(tuple, state{}, f{});
  25     (void)result;
  26 }