absl/container/hash_container_defaults.h

0001 // Copyright 2024 The Abseil Authors
0002 //
0003 // Licensed under the Apache License, Version 2.0 (the "License");
0004 // you may not use this file except in compliance with the License.
0005 // You may obtain a copy of the License at
0006 //
0007 //     https://www.apache.org/licenses/LICENSE-2.0
0008 //
0009 // Unless required by applicable law or agreed to in writing, software
0010 // distributed under the License is distributed on an "AS IS" BASIS,
0011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0012 // See the License for the specific language governing permissions and
0013 // limitations under the License.
0014
0015 #ifndef ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_
0016 #define ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_
0017
0018 #include "absl/base/config.h"
0019 #include "absl/container/internal/hash_function_defaults.h"
0020
0021 namespace absl {
0022 ABSL_NAMESPACE_BEGIN
0023
0024 // DefaultHashContainerHash is a convenience alias for the functor that is used
0025 // by default by Abseil hash-based (unordered) containers for hashing when
0026 // `Hash` type argument is not explicitly specified.
0027 //
0028 // This type alias can be used by generic code that wants to provide more
0029 // flexibility for defining underlying containers.
0030 template <typename T>
0031 using DefaultHashContainerHash = absl::container_internal::hash_default_hash<T>;
0032
0033 // DefaultHashContainerEq is a convenience alias for the functor that is used by
0034 // default by Abseil hash-based (unordered) containers for equality check when
0035 // `Eq` type argument is not explicitly specified.
0036 //
0037 // This type alias can be used by generic code that wants to provide more
0038 // flexibility for defining underlying containers.
0039 template <typename T>
0040 using DefaultHashContainerEq = absl::container_internal::hash_default_eq<T>;
0041
0042 ABSL_NAMESPACE_END
0043 }  // namespace absl
0044
0045 #endif  // ABSL_CONTAINER_HASH_CONTAINER_DEFAULTS_H_