| 123456789101112131415161718192021222324252627 |
- // Copyright Louis Dionne 2013-2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #include <boost/hana/assert.hpp>
- #include <boost/hana/fold_left.hpp>
- #include <boost/hana/tuple.hpp>
- #include <sstream>
- namespace hana = boost::hana;
- auto to_string = [](auto x) {
- std::ostringstream ss;
- ss << x;
- return ss.str();
- };
- auto show = [](auto x, auto y) {
- return "(" + to_string(x) + " + " + to_string(y) + ")";
- };
- int main() {
- BOOST_HANA_RUNTIME_CHECK(
- hana::fold_left(hana::make_tuple(2, "3", '4'), "1", show) == "(((1 + 2) + 3) + 4)"
- );
- }
|
