Robert Bradshaw wrote: > On Jun 4, 2009, at 5:48 PM, Craig Citro wrote: > >>>> Should this be changed so that m.change_ring(R) always returns a >>>> copy? >>> Yes, I think so. >>> >> +1 > > I'd say No. I think change_ring should be fast when it's already the > right ring, it shouldn't be used for making copies (unless > necessary). Perhaps it could take an optional copy parameter.
How do you generally use the matrix after you call change_ring()? It seems like the normal thing to do would be to change the matrix in some way. In that case, it is a huge bonus to have consistency between returning the original object and returning a copy. Jason -- Jason Grout --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
