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 21int 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