But the type stored on the wire is known - so it seems like it could be supported (simply static_cast<double>(float_val)). By 'some libraries': does the C++ ParseFromString method do this or not?
Thanks! James On Wed, Nov 15, 2017 at 3:57 PM Marc Gravell <marc.grav...@gmail.com> wrote: > Not really, no. They take different amounts of space on the wire, and have > a different declared wire type (header). Some libraries may choose to be > gracious and apply the conversion silently, but other libraries could just > say "unexpected wire type" and stop processing. > > You could perhaps do it as a `oneof`, and have the client check both? > > On 15 Nov 2017 11:51 p.m., "James Philbin" <philb...@gmail.com> wrote: > >> Hi, >> >> Is it safe to upgrade float fields to doubles for serialized protos? If >> not, why not? >> >> Thanks, >> James >> >> -- >> > 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 protobuf+unsubscr...@googlegroups.com. > > >> To post to this group, send email to protobuf@googlegroups.com. >> Visit this group at https://groups.google.com/group/protobuf. >> For more options, visit https://groups.google.com/d/optout. >> > -- 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 protobuf+unsubscr...@googlegroups.com. To post to this group, send email to protobuf@googlegroups.com. Visit this group at https://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
