(just to say that it would be cool to add this information to the doc if you figure out the answer to this question)
Nathann On 4 February 2015 at 14:40, Eric Gourgoulhon <egourgoul...@gmail.com> wrote: > Hi, > > I don't have the answer, but a related discussion is in this thread. > > I am often facing this problem, typically when the parent is a homset and > one would like to implement a specific Element class to deal with the > identity map. Indeed, many methods require a specific implementation for the > identity map (e.g. the method __call__(x) should simply returns x). At the > moment, the workaround I am using is to have the boolean attribute > _is_identity in the Element class and to make the methods have a different > treatment depending on the value of _is_identity. From an object-oriented > pov, it would be desirable to have instead the identity map be an instance > of a devoted subclass. But then, this subclass would be not the element > class of the parent... > > Eric > > -- > 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 http://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 http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
