On Oct 17, 2007, at 6:54 PM, David Harvey wrote:
> On Oct 17, 2007, at 9:50 PM, William Stein wrote:
>
>>
>> On 10/17/07, Mike Hansen <[EMAIL PROTECTED]> wrote:
>>>
>>>> Bobby and I don't really like
>>>> sage: a.rhs.expand()
>>>> since it's a hackish abuse of notation and it is confusing to read.
>>>> It's clever though (which is not good).
>>>
>>> I agree with that sentiment. On the other hand, I think
>>>
>>> sage: c = b.change_right(b.right().expand())
>>>
>>> is a bit cumbersome.
>>>
>>
>> I totally agree. What is better?
>
> 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.
- Robert
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