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 <size_t I, class... Types> 15// typename tuple_element<I, tuple<Types...> >::type const& 16// get(const tuple<Types...>& t); 17 18// UNSUPPORTED: c++98, c++03 19 20#include <tuple> 21#include <string> 22#include <cassert> 23 24int main() 25{ 26 { 27 typedef std::tuple<double&, std::string, int> T; 28 double d = 1.5; 29 const T t(d, "high", 5); 30 assert(std::get<0>(t) == 1.5); 31 assert(std::get<1>(t) == "high"); 32 assert(std::get<2>(t) == 5); 33 std::get<0>(t) = 2.5; 34 assert(std::get<0>(t) == 2.5); 35 assert(std::get<1>(t) == "high"); 36 assert(std::get<2>(t) == 5); 37 assert(d == 2.5); 38 39 std::get<1>(t) = "four"; 40 } 41} 42