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Diffstat (limited to '')
-rw-r--r-- | src/boost/libs/hana/example/ap.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/ap.cpp b/src/boost/libs/hana/example/ap.cpp new file mode 100644 index 000000000..51000d91e --- /dev/null +++ b/src/boost/libs/hana/example/ap.cpp @@ -0,0 +1,48 @@ +// Copyright Louis Dionne 2013-2017 +// 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 <boost/hana/ap.hpp> +#include <boost/hana/assert.hpp> +#include <boost/hana/config.hpp> +#include <boost/hana/equal.hpp> +#include <boost/hana/optional.hpp> +#include <boost/hana/tuple.hpp> + +#include <functional> +namespace hana = boost::hana; + + +int main() { + // with tuples + static_assert( + hana::ap(hana::make_tuple(std::plus<>{}), hana::make_tuple(1, 2), + hana::make_tuple(3, 4, 5)) + == + hana::make_tuple( + 1 + 3, 1 + 4, 1 + 5, + 2 + 3, 2 + 4, 2 + 5 + ) + , ""); + + // with optional values + BOOST_HANA_CONSTEXPR_LAMBDA auto multiply = [](auto a, auto b, auto c) { + return a * b * c; + }; + + BOOST_HANA_CONSTEXPR_CHECK( + hana::ap(hana::just(multiply), hana::just(1), + hana::just(2), + hana::just(3)) + == + hana::just(1 * 2 * 3) + ); + + BOOST_HANA_CONSTANT_CHECK( + hana::ap(hana::just(multiply), hana::just(1), + hana::nothing, + hana::just(3)) + == + hana::nothing + ); +} |