26 lines
898 B
C++
26 lines
898 B
C++
// Copyright Louis Dionne 2013-2017
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#include <boost/hana/assert.hpp>
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#include <boost/hana/equal.hpp>
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#include <boost/hana/flatten.hpp>
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#include <boost/hana/optional.hpp>
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#include <boost/hana/tuple.hpp>
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namespace hana = boost::hana;
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static_assert(
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hana::flatten(hana::make_tuple(hana::make_tuple(1, 2, 3),
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hana::make_tuple(4, 5),
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hana::make_tuple(6, 7, 8, 9)))
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==
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hana::make_tuple(1, 2, 3, 4, 5, 6, 7, 8, 9)
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, "");
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BOOST_HANA_CONSTANT_CHECK(hana::flatten(hana::nothing) == hana::nothing);
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static_assert(hana::flatten(hana::just(hana::just(1))) == hana::just(1), "");
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BOOST_HANA_CONSTANT_CHECK(hana::flatten(hana::just(hana::nothing)) == hana::nothing);
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int main() { }
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