// Copyright Louis Dionne 2013-2016 // 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 #include #include #include #include namespace hana = boost::hana; int main() { static_assert( hana::maximum.by(hana::ordering(hana::length), hana::make_tuple( hana::make_tuple(), hana::make_tuple(1, '2'), hana::make_tuple(3.3, nullptr, 4) )) == hana::make_tuple(3.3, nullptr, 4) , ""); }