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08b3db1708
This patch modularizes the examples, makes them self-contained and also uses qualified hana:: names. Fixes #139 Fixes #126
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
/*
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@copyright Louis Dionne 2015
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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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*/
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#include <boost/hana/ap.hpp>
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#include <boost/hana/assert.hpp>
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#include <boost/hana/config.hpp>
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#include <boost/hana/optional.hpp>
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#include <boost/hana/tuple.hpp>
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#include <functional>
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namespace hana = boost::hana;
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int main() {
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// with tuples
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static_assert(
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hana::ap(hana::make_tuple(std::plus<>{}), hana::make_tuple(1, 2),
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hana::make_tuple(3, 4, 5))
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==
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hana::make_tuple(
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1 + 3, 1 + 4, 1 + 5,
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2 + 3, 2 + 4, 2 + 5
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)
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, "");
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// with optional values
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BOOST_HANA_CONSTEXPR_LAMBDA auto multiply = [](auto a, auto b, auto c) {
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return a * b * c;
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};
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BOOST_HANA_CONSTEXPR_CHECK(
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hana::ap(hana::just(multiply), hana::just(1),
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hana::just(2),
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hana::just(3))
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==
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hana::just(1 * 2 * 3)
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);
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BOOST_HANA_CONSTANT_CHECK(
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hana::ap(hana::just(multiply), hana::just(1),
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hana::nothing,
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hana::just(3))
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==
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hana::nothing
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);
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}
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