hash_container_defaults.h 1.8 KB

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  1. // Copyright 2024 The Abseil Authors
  2. //
  3. // Licensed under the Apache License, Version 2.0 (the "License");
  4. // you may not use this file except in compliance with the License.
  5. // You may obtain a copy of the License at
  6. //
  7. // https://www.apache.org/licenses/LICENSE-2.0
  8. //
  9. // Unless required by applicable law or agreed to in writing, software
  10. // distributed under the License is distributed on an "AS IS" BASIS,
  11. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12. // See the License for the specific language governing permissions and
  13. // limitations under the License.
  14. #ifndef ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_
  15. #define ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_
  16. #include "absl/base/config.h"
  17. #include "absl/container/internal/hash_function_defaults.h"
  18. namespace absl {
  19. ABSL_NAMESPACE_BEGIN
  20. // DefaultHashContainerHash is a convenience alias for the functor that is used
  21. // by default by Abseil hash-based (unordered) containers for hashing when
  22. // `Hash` type argument is not explicitly specified.
  23. //
  24. // This type alias can be used by generic code that wants to provide more
  25. // flexibility for defining underlying containers.
  26. template <typename T>
  27. using DefaultHashContainerHash = absl::container_internal::hash_default_hash<T>;
  28. // DefaultHashContainerEq is a convenience alias for the functor that is used by
  29. // default by Abseil hash-based (unordered) containers for equality check when
  30. // `Eq` type argument is not explicitly specified.
  31. //
  32. // This type alias can be used by generic code that wants to provide more
  33. // flexibility for defining underlying containers.
  34. template <typename T>
  35. using DefaultHashContainerEq = absl::container_internal::hash_default_eq<T>;
  36. ABSL_NAMESPACE_END
  37. } // namespace absl
  38. #endif // ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_