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f51cf556 | 1 | // Copyright Louis Dionne 2013-2022 |
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/assert.hpp> | |
6 | #include <boost/hana/equal.hpp> | |
7 | #include <boost/hana/integral_constant.hpp> | |
8 | #include <boost/hana/length.hpp> | |
9 | #include <boost/hana/optional.hpp> | |
10 | #include <boost/hana/tuple.hpp> | |
11 | namespace hana = boost::hana; | |
12 | ||
13 | ||
14 | int main() { | |
15 | BOOST_HANA_CONSTANT_CHECK(hana::length(hana::make_tuple()) == hana::size_c<0>); | |
16 | BOOST_HANA_CONSTANT_CHECK(hana::length(hana::make_tuple(1, '2', 3.0)) == hana::size_c<3>); | |
17 | ||
18 | BOOST_HANA_CONSTANT_CHECK(hana::length(hana::nothing) == hana::size_c<0>); | |
19 | BOOST_HANA_CONSTANT_CHECK(hana::length(hana::just('x')) == hana::size_c<1>); | |
20 | } |