| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // REQUIRES: std-at-least-c++23 |
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| 10 | |
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| 11 | // <ranges> |
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| 12 | |
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| 13 | // [Example 1: |
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| 14 | // vector<string> vs = {"the", "quick", "brown", "fox"}; |
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| 15 | // for (char c : vs | views::join_with('-')) { |
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| 16 | // cout << c; |
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| 17 | // } |
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| 18 | // // The above prints the-quick-brown-fox |
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| 19 | // - end example] |
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| 20 | |
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| 21 | #include <ranges> |
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| 22 | |
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| 23 | #include <cassert> |
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| 24 | #include <string> |
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| 25 | #include <vector> |
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| 26 | |
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| 27 | constexpr bool test() { |
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| 28 | std::vector<std::string> vs = {"the" , "quick" , "brown" , "fox" }; |
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| 29 | std::string result; |
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| 30 | for (char c : vs | std::views::join_with('-')) { |
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| 31 | result += c; |
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| 32 | } |
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| 33 | |
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| 34 | return result == "the-quick-brown-fox" ; |
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| 35 | } |
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| 36 | |
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| 37 | int main(int, char**) { |
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| 38 | assert(test()); |
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| 39 | static_assert(test()); |
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| 40 | |
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| 41 | return 0; |
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| 42 | } |
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| 43 | |
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