Perhaps I should have expected this, but sage: R=Integers(5) sage: L=R.list() sage: L [0, 1, 2, 3, 4] ## I just want the *non-zero* elements: sage: L.__delitem__(0) sage: L [1, 2, 3, 4] ## Ah! ## Uh-oh sage: R.list() [1, 2, 3, 4] ## Better fix that... sage: R=Integers(5) ## Oops! I've broken Z/5*Z!! sage: R.list() [1, 2, 3, 4] ## But, ironically, sage: R(0) in R True
I hope Sage isn't a distributed system, where the cache is shared across all users... Is this a "Doctor: Then don't do that" moment, or should "obj.list()" return a deep copy? Cheers, Justin -- Justin C. Walker Director Institute for the Enhancement of the Director's Income -- Fame is fleeting, but obscurity just drags on and on. F&E -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
