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Reviewed By: aaronabramov Differential Revision: D33367752 fbshipit-source-id: 4ce94d184485e5ee0a62cf67ad2d3ba16e285c8f
39 lines
668 B
C++
39 lines
668 B
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <butter/butter.h>
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#if defined(BUTTER_USE_FOLLY_CONTAINERS) || __cplusplus < 202000L
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#include <folly/Optional.h>
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#else
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#include <optional>
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#endif
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namespace facebook {
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namespace butter {
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#if defined(BUTTER_USE_FOLLY_CONTAINERS) || __cplusplus < 202000L
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template <typename Value>
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using optional = folly::Optional<Value>;
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#else
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template <typename Value>
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using optional = std::optional<Value>;
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#endif
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} // namespace butter
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} // namespace facebook
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