William wrote:
> On 10/17/07, Robert Bradshaw <[EMAIL PROTECTED]> wrote:
> > How about replace_right instead of change_right.
> >
> > How about
> >
> > eqn.expand() # does it to both sides
> > eqn.expand('right') # does it to the right
> > eqn.expand('left') # does it to the right
> >
> > Basically, every function valid on a symbolic expression would be
> > valid on a symbolic equation, and take an extra (optional) parameter
> > of what side to do it to. This could probably be done automatically.
> > It would return a new instance.
>
> I think I like that idea, though I would like to hear from other
> people, especially Ted to see what they think.
I have been experimenting with making a subclass of SymbolicEquation
called MutableSymbolicEquation but I like this approach better because
it is simpler.
Ted
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