Google Cloud C++ Client  1.32.1
C++ Client Library for Google Cloud Platform
optional.h
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1 // Copyright 2018 Google LLC
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 // http://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 GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_OPTIONAL_H
16 #define GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_OPTIONAL_H
17 
18 #include "google/cloud/version.h"
19 #include "absl/types/optional.h"
20 
21 namespace google {
22 namespace cloud {
23 inline namespace GOOGLE_CLOUD_CPP_NS {
24 
25 /**
26  * Alias template for google::cloud::optional.
27  *
28  * @deprecated this alias is deprecated; use `absl::optional<T>` directly.
29  */
30 template <typename T>
31 using optional = absl::optional<T>;
32 
33 } // namespace GOOGLE_CLOUD_CPP_NS
34 } // namespace cloud
35 } // namespace google
36 
37 #endif // GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_OPTIONAL_H