Hi, On Wed, Oct 14, 2015 at 10:25 AM, Pekka Paalanen <ppaala...@gmail.com> wrote: > On Tue, 13 Oct 2015 20:27:58 +0100 > Auke Booij <a...@tulcod.com> wrote: > >> On 13 October 2015 at 16:19, Solerman Kaplon <soler...@gmail.com> wrote: >> > Em 13-10-2015 11:35, Nils Chr. Brause escreveu: >> >> >> >> In C++ the order doesn't matter either, since each entry has a defined >> >> value. I wonder why this is different in Java? > >> I really don't understand this discussion. Is the claim that the usage >> of enums in java is problematic, because inserting a new value in an >> existing enum might change the index of later values, thereby creating >> an inconsistency? > > Yes, this is how I understood the problem from the irc discussion, > indeed. > >> If so, all I can say that clearly the object you want to associate >> with wayland-style enums is not whatever Java has invented for an >> "enum". The values that are associated to names inside wayland enums >> are very clear-defined, and if a language cannot safely couple names >> back to values, then that is a language that does not understand the >> concept of a variable. If this is a fundamental problem about Java >> enums, you better find a way around it, but I don't see how this is in >> any way a problem on the wayland side: there are enums, and enums >> contain names, and those names have values. >> >> But if this is indeed the issue you are discussing, then this must >> have already been a problem before the introduction of additional XML >> attributes. >> >> Can we agree on the following? Until there is any firm specification >> of open/closed enums, every enum should be considered open, and >> although some legal values might be listed, others might not be, and >> some might only be legal sometimes. New values may be added (but not >> changed or removed) to protocol specifications without introducing any >> compatibility issues. > > FWIW, I would be happy with that.
I would be happy with that, too. Also, this would bring us a step forward. :) > Solerman, you forgot to reply-to-all. I added back the CCs. > > > Thanks, > pq Cheers, Nils _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/wayland-devel
