On Thursday, 17 October 2013 09:36:41 UTC+2, Jean-Yves Thibon wrote: > > *snip* > > In summary, a short and very simple code written some 10 > moths ago is now totally unusable and needs to be modified at > each single line. >
Hi Jean-Yves, I guess that the short (but harsh) answer is that if you have code which relies upon some one else's code which is in the queue, but which is not yet merged into sage, then there is no guarantee that your code will work next year, or even tomorrow. Any code which is merged should still work or, at a minimum, it should provide useful error messages to help you sort out what is going wrong (but this is only guaranteed in the first year after the change). I have certainly had this problem with my own private code and with the code that I have languishing in the queue. As I haven't used (or touched) the methods that you are having issues with I don't know whether they were just in the queue or whether they were already part of the official sage distribution. If these methods were already included in an official release then clearly the review process has not worked properly in this instance and you have a legitimate complaint. Looking at the patch queue, robinson_schensted_inverse was depreciated in trac8392 <http://trac.sagemath.org/attachment/ticket/8392>. It seems to have been replaced with RSK_inverse which just seems wrong to me: with tab-completion I don't see the need for random acronyms, even relatively common ones like this one. (This probably just reflects my own idiosyncrasies:) Returning to the question of the descents method, irrespective of whether it is backwardly compatible, I think it should the descent set of a tableau is what any reasonable algebraic combinatorialist would expect this method to return. Anything else is implementation-bug and it should be fixed. Andrew -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-combinat-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-combinat-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-combinat-devel. For more options, visit https://groups.google.com/groups/opt_out.
