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clang-p2996/libcxx/test/std/ranges/range.factories/range.repeat.view/ctad.compile.pass.cpp
yrong a2160dd34d [libc++][ranges] Implement P2474R2(views::repeat).
- Implement https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2474r2.html
- Implement LWG3875(https://cplusplus.github.io/LWG/issue3875).

Depends on D151629

Reviewed By: #libc, Mordante, philnik, var-const

Differential Revision: https://reviews.llvm.org/D141699
2023-07-20 20:03:01 +08:00

28 lines
1.3 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
// template<class T, class Bound>
// repeat_view(T, Bound) -> repeat_view<T, Bound>;
#include <concepts>
#include <ranges>
#include <utility>
struct Empty {};
// clang-format off
static_assert(std::same_as<decltype(std::ranges::repeat_view(Empty())), std::ranges::repeat_view<Empty>>);
static_assert(std::same_as<decltype(std::ranges::repeat_view(std::declval<Empty&>())), std::ranges::repeat_view<Empty>>);
static_assert(std::same_as<decltype(std::ranges::repeat_view(std::declval<Empty&&>())), std::ranges::repeat_view<Empty>>);
static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1)), std::ranges::repeat_view<int, int>>);
static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1U)), std::ranges::repeat_view<int, unsigned>>);
static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1UL)), std::ranges::repeat_view<int, unsigned long>>);
// clang-format on