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// 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/assert.hpp>
#include <boost/hana/tuple.hpp>
#include <string>
namespace hana = boost::hana;
struct Empty { };
int main() {
{
using T = hana::tuple<>;
T t0;
T t_implicit = t0;
T t_explicit(t0);
(void)t_explicit;
(void)t_implicit;
}
{
using T = hana::tuple<int>;
T t0(2);
T t = t0;
BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(t) == 2);
}
{
using T = hana::tuple<int, char>;
T t0(2, 'a');
T t = t0;
BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(t) == 2);
BOOST_HANA_RUNTIME_CHECK(hana::at_c<1>(t) == 'a');
}
{
using T = hana::tuple<int, char, std::string>;
const T t0(2, 'a', "some text");
T t = t0;
BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(t) == 2);
BOOST_HANA_RUNTIME_CHECK(hana::at_c<1>(t) == 'a');
BOOST_HANA_RUNTIME_CHECK(hana::at_c<2>(t) == "some text");
}
{
using T = hana::tuple<int>;
constexpr T t0(2);
constexpr T t = t0;
static_assert(hana::at_c<0>(t) == 2, "");
}
{
using T = hana::tuple<Empty>;
constexpr T t0;
constexpr T t = t0;
constexpr Empty e = hana::at_c<0>(t); (void)e;
}
{
struct T { };
struct U { };
constexpr hana::tuple<T, U> binary{};
constexpr hana::tuple<T, U> copy_implicit = binary;
constexpr hana::tuple<T, U> copy_explicit(binary);
(void)copy_implicit;
(void)copy_explicit;
}
}
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