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b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
7c673cae FG |
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 | } |