On Jan 9, 2011, at 08:32 , José Díaz de Greñu y de Pedro wrote: > Yes, it is just for my own work. William, do you know where, in the doc, can > i find ANYTHING about _is_inmutable flag?
AFAIK, there is no documentation, per se, on this flag. Your best bet at this point is to use, in sage, the "search_src()" function to track down where in the source it is defined and used. As I recently learned (see <http://groups.google.com/group/sage-devel/browse_thread/thread/a9d048ee90c36c23/3e9d71c7f37ff7db?lnk=gst&q=immutable#3e9d71c7f37ff7db> ) immutability is, essentially, a convention. In instances where the data is actually created in C/C++ code, this can be enforced *in Python* (because Python code can only get at the data indirectly). You might also search the archives for more discussion, both in sage-devel and sage-support. HTH Justin -- Justin C. Walker, Curmudgeon at Large Institute for the Absorption of Federal Funds ----------- If it weren't for carbon-14, I wouldn't date at all. ----------- -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
