hash_container_defaults.h (1801B)
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 15 #ifndef ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_ 16 #define ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_ 17 18 #include "absl/base/config.h" 19 #include "absl/container/internal/hash_function_defaults.h" 20 21 namespace absl { 22 ABSL_NAMESPACE_BEGIN 23 24 // DefaultHashContainerHash is a convenience alias for the functor that is used 25 // by default by Abseil hash-based (unordered) containers for hashing when 26 // `Hash` type argument is not explicitly specified. 27 // 28 // This type alias can be used by generic code that wants to provide more 29 // flexibility for defining underlying containers. 30 template <typename T> 31 using DefaultHashContainerHash = absl::container_internal::hash_default_hash<T>; 32 33 // DefaultHashContainerEq is a convenience alias for the functor that is used by 34 // default by Abseil hash-based (unordered) containers for equality check when 35 // `Eq` type argument is not explicitly specified. 36 // 37 // This type alias can be used by generic code that wants to provide more 38 // flexibility for defining underlying containers. 39 template <typename T> 40 using DefaultHashContainerEq = absl::container_internal::hash_default_eq<T>; 41 42 ABSL_NAMESPACE_END 43 } // namespace absl 44 45 #endif // ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_