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/equal.hpp>
6 #include <boost/hana/length.hpp>
7 #include <boost/hana/maximum.hpp>
8 #include <boost/hana/ordering.hpp>
9 #include <boost/hana/tuple.hpp>
10 namespace hana = boost::hana;
11
12
main()13 int main() {
14 static_assert(
15 hana::maximum.by(hana::ordering(hana::length), hana::make_tuple(
16 hana::make_tuple(),
17 hana::make_tuple(1, '2'),
18 hana::make_tuple(3.3, nullptr, 4)
19 ))
20 == hana::make_tuple(3.3, nullptr, 4)
21 , "");
22 }
23