39 lines
605 B
C++
39 lines
605 B
C++
/**
|
|
* 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>
|
|
|
|
#ifdef BETTER_USE_FOLLY_CONTAINERS
|
|
|
|
#include <folly/Optional.h>
|
|
|
|
#else
|
|
|
|
#include <optional>
|
|
|
|
#endif
|
|
|
|
namespace facebook {
|
|
namespace better {
|
|
|
|
#ifdef BETTER_USE_FOLLY_CONTAINERS
|
|
|
|
template <typename Value>
|
|
using optional = folly::Optional<Value>;
|
|
|
|
#else
|
|
|
|
template <typename Value>
|
|
using optional = std::optional<Value>;
|
|
|
|
#endif
|
|
|
|
} // namespace better
|
|
} // namespace facebook
|