react-native/ReactCommon/better/map.h

46 lines
870 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/container/F14Map.h>
#else
#include <unordered_map>
#endif
namespace facebook {
namespace better {
/*
* Note: In Better, `map` aliases to `unorderd_map` because everyone agrees that
* an *ordered* map is nonsense and was a huge mistake for standardization. If
* you need an *ordered* map, feel free to introduce that as
* `better::ordered_map`.
*/
#ifdef BETTER_USE_FOLLY_CONTAINERS
template <typename... Ts>
using map = folly::F14FastMap<Ts...>;
#else
template <typename... Ts>
using map = std::unordered_map<Ts...>;
#endif
} // namespace better
} // namespace facebook