| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <tuple> |
| |
| // template <class... Types> class tuple; |
| |
| // explicit tuple(const T&...); |
| |
| #include <tuple> |
| #include <string> |
| #include <cassert> |
| |
| int main() |
| { |
| { |
| std::tuple<int> t(2); |
| assert(std::get<0>(t) == 2); |
| } |
| #if _LIBCPP_STD_VER > 11 |
| { |
| constexpr std::tuple<int> t(2); |
| static_assert(std::get<0>(t) == 2, ""); |
| } |
| { |
| constexpr std::tuple<int> t; |
| static_assert(std::get<0>(t) == 0, ""); |
| } |
| #endif |
| { |
| std::tuple<int, char*> t(2, 0); |
| assert(std::get<0>(t) == 2); |
| assert(std::get<1>(t) == nullptr); |
| } |
| #if _LIBCPP_STD_VER > 11 |
| { |
| constexpr std::tuple<int, char*> t(2, nullptr); |
| static_assert(std::get<0>(t) == 2, ""); |
| static_assert(std::get<1>(t) == nullptr, ""); |
| } |
| #endif |
| { |
| std::tuple<int, char*> t(2, nullptr); |
| assert(std::get<0>(t) == 2); |
| assert(std::get<1>(t) == nullptr); |
| } |
| { |
| std::tuple<int, char*, std::string> t(2, nullptr, "text"); |
| assert(std::get<0>(t) == 2); |
| assert(std::get<1>(t) == nullptr); |
| assert(std::get<2>(t) == "text"); |
| } |
| // extensions |
| { |
| std::tuple<int, char*, std::string> t(2); |
| assert(std::get<0>(t) == 2); |
| assert(std::get<1>(t) == nullptr); |
| assert(std::get<2>(t) == ""); |
| } |
| { |
| std::tuple<int, char*, std::string> t(2, nullptr); |
| assert(std::get<0>(t) == 2); |
| assert(std::get<1>(t) == nullptr); |
| assert(std::get<2>(t) == ""); |
| } |
| { |
| std::tuple<int, char*, std::string, double> t(2, nullptr, "text"); |
| assert(std::get<0>(t) == 2); |
| assert(std::get<1>(t) == nullptr); |
| assert(std::get<2>(t) == "text"); |
| assert(std::get<3>(t) == 0.0); |
| } |
| } |