1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <tuple> 11 12 // template <class... Types> class tuple; 13 14 // template<class... Types> 15 // tuple<Types&...> tie(Types&... t); 16 17 #include <tuple> 18 #include <string> 19 #include <cassert> 20 21 int main() 22 { 23 { 24 int i = 0; 25 std::string s; 26 std::tie(i, std::ignore, s) = std::make_tuple(42, 3.14, "C++"); 27 assert(i == 42); 28 assert(s == "C++"); 29 } 30 #if _LIBCPP_STD_VER > 11 31 { 32 static constexpr int i = 42; 33 static constexpr double f = 1.1; 34 constexpr std::tuple<const int &, const double &> t = std::tie(i, f); 35 static_assert ( std::get<0>(t) == 42, "" ); 36 static_assert ( std::get<1>(t) == 1.1, "" ); 37 } 38 #endif 39 } 40
