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)
5 #include <boost/hana/assert.hpp>
6 #include <boost/hana/fuse.hpp>
7 #include <boost/hana/tuple.hpp>
8 namespace hana = boost::hana;
11 auto tie = [](auto& ...vars) {
12 return hana::fuse([&vars...](auto ...values) {
13 // Using an initializer list to sequence the assignments.
14 int dummy[] = {0, ((void)(vars = values), 0)...};
24 tie(a, b, c)(hana::make_tuple(1, '2', 3.3));
25 BOOST_HANA_RUNTIME_CHECK(a == 1 && b == '2' && c == 3.3);