1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
10
11// Some basic examples of how zip_view might be used in the wild. This is a general
12// collection of sample algorithms and functions that try to mock general usage of
13// this view.
14
15#include <ranges>
16
17#include <array>
18#include <cassert>
19#include <tuple>
20#include <vector>
21#include <string>
22
23int main(int, char**) {
24 {
25 std::ranges::zip_view v{
26 std::array{1, 2},
27 std::vector{4, 5, 6},
28 std::array{7},
29 };
30 assert(std::ranges::size(v) == 1);
31 assert(*v.begin() == std::make_tuple(1, 4, 7));
32 }
33 {
34 using namespace std::string_literals;
35 std::vector v{1, 2, 3, 4};
36 std::array a{"abc"s, "def"s, "gh"s};
37 auto view = std::views::zip(v, a);
38 auto it = view.begin();
39 assert(&(std::get<0>(*it)) == &(v[0]));
40 assert(&(std::get<1>(*it)) == &(a[0]));
41
42 ++it;
43 assert(&(std::get<0>(*it)) == &(v[1]));
44 assert(&(std::get<1>(*it)) == &(a[1]));
45
46 ++it;
47 assert(&(std::get<0>(*it)) == &(v[2]));
48 assert(&(std::get<1>(*it)) == &(a[2]));
49
50 ++it;
51 assert(it == view.end());
52 }
53
54 return 0;
55}
56

source code of libcxx/test/std/ranges/range.adaptors/range.zip/general.pass.cpp