Abseil StatusOr Pattern

1template <typename T>
2class StatusOr {
3 public:
4  StatusOr(const T& value)
5    : value_(value), ok_(true) {}
6  StatusOr(Status status)
7    : status_(status), ok_(false) {}
8  bool ok() const { return ok_; }
9  const T& value() const { return value_; }
10  const Status& status() const {
11    return status_;
12  }
13 private:
14  T value_;
15  Status status_;
16  bool ok_;
17};