Hi Timo. On 2018-12-25, Timo Kaufmann <eisfre...@gmail.com> wrote: > I don't really see a reason to rename it. The old name doesn't suggest that > it is implemented with pexpect.
No, it does, by tradiation: AFAIK, *ALL* interfaces that are named after a third-party computer algebra projects (gap, singular, r, pari, polymake, maxima, and of course magma, mathematica...) used to be pexpect interfaces. There has been an increased use of C level interfaces (libsingular, libgap, ...), but I got the impression that their names give a hint that they are not pexpect interfaces. For me, suddenly changing the gap or singular interface from pexpect to C would be a nasty surprise that would totally break my research code, because... > The implementation by definition should be n implementation detail, > the behaviour is largely the same. ... indeed this is (from my perspective) a weakness of libgap: libgap.__call__ is not equivalent to gap.__call__ and libgap.eval isn't equivalent to gap.eval. Also the way we currently use libsingular is totally not the same as calling the singular pexpect interface. I don't know if the C interface to R behaves exactly like the pexpect interface. If they behave truely (not just *largely*!) the same, then of course a change from pexpect to C interface shouldn't matter very much. However, still I would be in favour of a deprecation: There should, for the reasons stated in other posts, be only a single instance of the C interface, called "r", replacing the current pexpect interface called "r" (provided that they behave the same). But for the time being, there should still be sage.interfaces.r.R so that R() results in a deprecation warning and returns a new instance of the R pexpect interface. Note that there may also be issues with pickling. Has it been possible to pickle objects defined via the pexpect R interface? If this is so, would the stored pickles automatically unpickle as C interface R objects? Best regards, Simon -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
