summaryrefslogtreecommitdiffstats
path: root/libcxx/test/utilities/tuple/tuple.tuple/tuple.elem/get_const.fail.cpp
blob: 08277516093bb54d63c55c227dfc92a6f4c431dc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <tuple>

// template <class... Types> class tuple;

// template <size_t I, class... Types>
//   typename tuple_element<I, tuple<Types...> >::type const&
//   get(const tuple<Types...>& t);

#include <tuple>
#include <string>
#include <cassert>

int main()
{
    {
        typedef std::tuple<double&, std::string, int> T;
        double d = 1.5;
        const T t(d, "high", 5);
        assert(std::get<0>(t) == 1.5);
        assert(std::get<1>(t) == "high");
        assert(std::get<2>(t) == 5);
        std::get<0>(t) = 2.5;
        assert(std::get<0>(t) == 2.5);
        assert(std::get<1>(t) == "high");
        assert(std::get<2>(t) == 5);
        assert(d == 2.5);

        std::get<1>(t) = "four";
    }
}
OpenPOWER on IntegriCloud