| 1 | // Copyright Louis Dionne 2013-2022 |
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| 2 | // Distributed under the Boost Software License, Version 1.0. |
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| 3 | // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) |
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| 4 | |
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| 5 | #include <boost/hana/all_of.hpp> |
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| 6 | #include <boost/hana/assert.hpp> |
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| 7 | #include <boost/hana/config.hpp> |
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| 8 | #include <boost/hana/contains.hpp> |
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| 9 | #include <boost/hana/functional/curry.hpp> |
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| 10 | #include <boost/hana/permutations.hpp> |
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| 11 | #include <boost/hana/tuple.hpp> |
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| 12 | namespace hana = boost::hana; |
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| 13 | |
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| 14 | |
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| 15 | BOOST_HANA_CONSTEXPR_LAMBDA auto is_permutation_of = hana::curry<2>([](auto xs, auto perm) { |
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| 16 | return hana::contains(hana::permutations(xs), perm); |
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| 17 | }); |
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| 18 | |
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| 19 | int main() { |
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| 20 | BOOST_HANA_CONSTEXPR_CHECK( |
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| 21 | hana::all_of( |
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| 22 | hana::make_tuple( |
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| 23 | hana::make_tuple('1', 2, 3.0), |
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| 24 | hana::make_tuple('1', 3.0, 2), |
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| 25 | hana::make_tuple(2, '1', 3.0), |
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| 26 | hana::make_tuple(2, 3.0, '1'), |
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| 27 | hana::make_tuple(3.0, '1', 2), |
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| 28 | hana::make_tuple(3.0, 2, '1') |
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| 29 | ), |
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| 30 | is_permutation_of(hana::make_tuple('1', 2, 3.0)) |
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| 31 | ) |
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| 32 | ); |
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| 33 | } |
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| 34 | |
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