1 // Copyright 2017 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 
16 #ifndef ABSL_BASE_INTERNAL_IDENTITY_H_
17 #define ABSL_BASE_INTERNAL_IDENTITY_H_
18 
19 #include "absl/base/config.h"
20 
21 namespace absl {
22 ABSL_NAMESPACE_BEGIN
23 namespace internal {
24 
25 template <typename T>
26 struct identity {
27   typedef T type;
28 };
29 
30 template <typename T>
31 using identity_t = typename identity<T>::type;
32 
33 }  // namespace internal
34 ABSL_NAMESPACE_END
35 }  // namespace absl
36 
37 #endif  // ABSL_BASE_INTERNAL_IDENTITY_H_
38