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- /*
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
- #pragma once
- #include <better/better.h>
- #if defined(BETTER_USE_FOLLY_CONTAINERS) || __cplusplus < 202000L
- #include <folly/Optional.h>
- #else
- #include <optional>
- #endif
- namespace facebook {
- namespace better {
- #if defined(BETTER_USE_FOLLY_CONTAINERS) || __cplusplus < 202000L
- template <typename Value>
- using optional = folly::Optional<Value>;
- #else
- template <typename Value>
- using optional = std::optional<Value>;
- #endif
- } // namespace better
- } // namespace facebook
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