File: get_const.compile.fail.cpp

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (42 lines) | stat: -rw-r--r-- 1,132 bytes parent folder | download | duplicates (22) 
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
40
41
42
 
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <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);

// UNSUPPORTED: c++03

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

int main(int, char**)
{
    {
        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";
    }

  return 0;
}