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