On Thu, May 14, 2009 at 3:19 PM, Fabian Pedregosa <fab...@fseoane.net> wrote:
>
> Ondrej Certik wrote:
>> On Thu, May 14, 2009 at 3:12 AM, Fabian Pedregosa <fab...@fseoane.net> wrote:
>>> Maybe the distinction between Symbol and Function in SymPy is rather
>>> artificial. After all, a function is an unknown variable with the same
>>> operations as Symbol, being the only difference with symbol that they
>>> live in different spaces (but specifying where the object lives is more
>>> the job of assumptions).
>>>
>>> Or is there another reason to make Symbol and Function separate objects?
>>
>> They have different __new__ methods, e.g. Function is the base class
>> for all sympy functions, while Symbol is just a symbol.
>
> I understand the job of Function as base class of other functions, what
> I don't like is the use of Function as an unknown function , as in f =
> Function('f') (this is where I think Symbol should be used). Plus, now
> that dsolve works with things like y(x), y and x Symbol, I wonder why we
> keep using Function as an unknown function in the tests and in the docs
> being the latter clearer.Yes, I also find it messy. Let's fix it. Ondrej --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
