| * 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_IDENTITY_H_ |
| #define RTC_BASE_CONTAINERS_IDENTITY_H_ |
| // Implementation of C++20's std::identity. |
| // - https://en.cppreference.com/w/cpp/utility/functional/identity |
| // - https://wg21.link/func.identity |
| constexpr T&& operator()(T&& t) const noexcept { |
| return std::forward<T>(t); |
| using is_transparent = void; |
| #endif // RTC_BASE_CONTAINERS_IDENTITY_H_ |