| /* |
| * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| // This implementation is borrowed from Chromium. |
| |
| #ifndef RTC_BASE_CONTAINERS_AS_CONST_H_ |
| #define RTC_BASE_CONTAINERS_AS_CONST_H_ |
| |
| #include <type_traits> |
| |
| namespace webrtc { |
| |
| // C++14 implementation of C++17's std::as_const(): |
| // https://en.cppreference.com/w/cpp/utility/as_const |
| template <typename T> |
| constexpr std::add_const_t<T>& as_const(T& t) noexcept { |
| return t; |
| } |
| |
| template <typename T> |
| void as_const(const T&& t) = delete; |
| |
| } // namespace webrtc |
| |
| #endif // RTC_BASE_CONTAINERS_AS_CONST_H_ |
