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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/react-native/ReactCommon/jsinspector-modern
Просмотр файла: UniqueMonostate.h
/*
* Copyright (c) Meta Platforms, Inc. and 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 <functional>
namespace facebook::react::jsinspector_modern {
/**
* A template for easily creating empty types that are distinct from one
* another. Useful if you need to generate marker types for use in an
* std::variant, and a single std::monostate won't do.
*/
template <size_t key>
struct UniqueMonostate {
constexpr bool operator==(const UniqueMonostate<key>&) const noexcept {
return true;
}
constexpr bool operator!=(const UniqueMonostate<key>&) const noexcept {
return false;
}
constexpr bool operator<(const UniqueMonostate<key>&) const noexcept {
return false;
}
constexpr bool operator>(const UniqueMonostate<key>&) const noexcept {
return false;
}
constexpr bool operator<=(const UniqueMonostate<key>&) const noexcept {
return true;
}
constexpr bool operator>=(const UniqueMonostate<key>&) const noexcept {
return true;
}
};
} // namespace facebook::react::jsinspector_modern
namespace std {
template <size_t key>
struct hash<::facebook::react::jsinspector_modern::UniqueMonostate<key>> {
size_t operator()(
const ::facebook::react::jsinspector_modern::UniqueMonostate<key>&)
const noexcept {
return key;
}
};
} // namespace std
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