I was one of the original authors, and removing the possibility of additional models sounds fine to me. I agree that nobody's going to implement them at this point. David
On Tue, Mar 14, 2017 at 5:26 AM, John Cremona <john.crem...@gmail.com> wrote: > On 14 March 2017 at 12:10, Jeroen Demeyer <jdeme...@cage.ugent.be> wrote: > > The coercion model in Sage seems to be designed to allow it to be > changed: > > there is a global object coercion_model defined in element.pyx which can > be > > get/set using get_coercion_model() and set_coercion_model(). So *in > theory* > > it is possible to implement a different coercion model. > > > > However, in practice I think that: > > 1. There is no need for an alternative coercion model. > > 2. Many places in Sage assume specific behaviour about the coercion > model, > > so changing it would break lots of things. > > > > So I suggest to drop support for a changable coercion model. One > advantage > > is that we could just import the "coercion_model" global instead of > needing > > to call get_coercion_model() every time. This would lead to cleaner and > > faster code. > > > > What do you think? > > Sounds like a good idea to me. Would one of the original authors like > to comment? It is rather unlikely that anyone else knows of this > possibility, and (as you say) the chances of it working are rather > remote. > > > > > > > Jeroen. > > > > -- > > 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. > > -- > 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. > -- 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.
