GRPC C++  1.26.0
optional.h
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1 /*
2  *
3  * Copyright 2019 gRPC authors.
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
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14  * See the License for the specific language governing permissions and
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17  */
18 
19 #ifndef GRPC_CORE_LIB_GPRPP_OPTIONAL_H
20 #define GRPC_CORE_LIB_GPRPP_OPTIONAL_H
21 
22 namespace grpc_core {
23 
24 /* A make-shift alternative for absl::Optional. This can be removed in favor of
25  * that once absl dependencies can be introduced. */
26 template <typename T>
27 class Optional {
28  public:
29  Optional() : value_() {}
30  void set(const T& val) {
31  value_ = val;
32  set_ = true;
33  }
34 
35  bool has_value() const { return set_; }
36 
37  void reset() { set_ = false; }
38 
39  T value() const { return value_; }
40 
41  private:
42  T value_;
43  bool set_ = false;
44 };
45 
46 } /* namespace grpc_core */
47 
48 #endif /* GRPC_CORE_LIB_GPRPP_OPTIONAL_H */
Optional()
Definition: optional.h:29
T value() const
Definition: optional.h:39
Definition: optional.h:27
Internal thread interface.
Definition: backoff.h:26
bool has_value() const
Definition: optional.h:35
void reset()
Definition: optional.h:37