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 10 // UNSUPPORTED: libcpp-has-no-incomplete-ranges 11 12 // <algorithm> 13 14 // template<input_iterator I, sentinel_for<I> S, weakly_incrementable O, class Proj = identity, 15 // indirect_equivalence_relation<projected<I, Proj>> C = ranges::equal_to> 16 // requires indirectly_copyable<I, O> && 17 // (forward_iterator<I> || 18 // (input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>) || 19 // indirectly_copyable_storable<I, O>) 20 // constexpr unique_copy_result<I, O> 21 // unique_copy(I first, S last, O result, C comp = {}, Proj proj = {}); // Since C++20 22 // 23 // template<input_range R, weakly_incrementable O, class Proj = identity, 24 // indirect_equivalence_relation<projected<iterator_t<R>, Proj>> C = ranges::equal_to> 25 // requires indirectly_copyable<iterator_t<R>, O> && 26 // (forward_iterator<iterator_t<R>> || 27 // (input_iterator<O> && same_as<range_value_t<R>, iter_value_t<O>>) || 28 // indirectly_copyable_storable<iterator_t<R>, O>) 29 // constexpr unique_copy_result<borrowed_iterator_t<R>, O> 30 // unique_copy(R&& r, O result, C comp = {}, Proj proj = {}); // Since C++20 31 32 #include <algorithm> 33 #include <array> 34 #include <concepts> 35 #include <functional> 36 #include <ranges> 37 38 #include "almost_satisfies_types.h" 39 #include "test_iterators.h" 40 41 // TODO: SFINAE tests. 42 43 constexpr bool test() { 44 // TODO: main tests. 45 // TODO: A custom comparator works. 46 // TODO: A custom projection works. 47 48 return true; 49 } 50 51 int main(int, char**) { 52 test(); 53 static_assert(test()); 54 55 return 0; 56 } 57