On Mar 27, 2009, at 5:22 AM, Martin Raum wrote: > Hi, > > There seems to be a quite strange behaviour of _richcmp in > structure.element.pyx. If the parents need to be coerced, afterwards > left._richcmp_ is called. But if they don't, left.__cmp__ is called, > hence > assuming a totally ordered parent. I don't see any reason for such a > behaviour and it renders correct and easy implementations of > partially > ordered parents almost impossible. > Shouldn't this be revised? I might do it.
It would be very good to cleanup/revise the code in there, but beware, it is rather fragile. There has also been discussion to make *less* things comparable, so it should probably be done with that in mind. Just curious, did you have a specific use in mind? - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
