On 24 October 2014 17:28, Peter Hubner <[email protected]> wrote: > All I am trying to achieve is to modify a message on the fly with a set of > fields that are supplied to the program at runtime. > > simple case: > // message declared as - const google::protobuf::Message& message > auto x = reflection->GetDouble(message, field); > // do some modification to x > reflection->SetDouble(message, field, x); > > my main question is how in the world do I get from a const ref (needed for > GetDouble() ) to a pointer (needed for SetDouble() )???
const_cast<Message*>(&message) This obviously casts away constness which is something to be careful about. If you want to mutate the message, why are you starting with a const ref? Oliver -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
