On Sat, Jun 4, 2011 at 1:18 AM, Gilbert gede <gilbertg...@gmail.com> wrote: > Yeah, that could work. > I was hoping that I could make it work in a way which was hidden to > the user; that just using diff would work. Writing a method (or > overriding one) to do this pre- and post-substitution is the only > solution that I currently understand how to do; but again, it is > undesirable.
Using a class that overrides some methods will only be visible to users when creating the variables, it could be something like "x = DynamicSymbol(x, t)" instead of "x = Symbol(x)". All the rest would be just the same, I believe. Is this too "user-annoying"? Renato -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.