Dear Alexey,
Thank you very much. I downloaded cp720.py and it solved my problem.
Best,
Mojtaba
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I think Interval was just added for its own sake.
Aaron Meurer
On Fri, Apr 11, 2014 at 11:26 AM, Matthew Rocklin wrote:
> All I know is that Interval and Union were there before I got here. Maybe
> integrals?
>
> I've changed things in FiniteSet and had some core things break.
>
> But yes, Set
All I know is that Interval and Union were there before I got here. Maybe
integrals?
I've changed things in FiniteSet and had some core things break.
But yes, Set is not Expr or Basic.
On Fri, Apr 11, 2014 at 9:09 AM, Aaron Meurer wrote:
> I don't mean the core as in sympy.core. I mean the c
I don't mean the core as in sympy.core. I mean the core as in the base
classes Basic, Expr, Add, Mul (and to some extend the numbers). Stuff
that *everything* uses. Not everything uses the sets. Unless I'm
missing some very core use of the sets.
Aaron Meurer
On Fri, Apr 11, 2014 at 11:05 AM, Matt
The benefit of sets is that everyone can understand it but it still has
enough complex elements (ProductSet, EmptySet) to capture the complexity of
a lot of the more challenging systems (though probably not quite as
challenging as tensors.)
On Fri, Apr 11, 2014 at 9:05 AM, Matthew Rocklin wrote:
Well, sets *is* in the core. Interval, Union, and FiniteSet are all used
in various parts. Fortunately though I think we refactor without changing
functionality. So far I've just replaced a custom double dispatch system
with multipledispatch.
On Fri, Apr 11, 2014 at 8:46 AM, Aaron Meurer wrot
Oh, that's even better. Then we don't have to touch the core, and we
can merge even experimental things faster.
Aaron Meurer
On Fri, Apr 11, 2014 at 10:40 AM, Matthew Rocklin wrote:
> Sets is a good play module for this purpose. Union and Intersection
> simplify pairwise much like Add and Mul w
Sets is a good play module for this purpose. Union and Intersection
simplify pairwise much like Add and Mul would. I like the pairwise methods
we have but the strategy to orchestrate them could use some cleaning up.
Might be a good place to build intuition.
See https://github.com/sympy/sympy/pu
This has always been the original motivation for multiple dispatch, at
least in my mind. You can't make objects that do their own thing in
Add or Mul or whatever. There are a dozen example of this throughout
SymPy, and a dozen more in user code. There are many hacky ways around
it, but none are sat
On Friday, April 11, 2014 1:29:11 AM UTC+2, Aaron Meurer wrote:
>
> There are probably little ways around these things, but nothing clean
> without dispatching in the core.
>
Another point in favor of multiple dispatching.
By the way, tensor expressions should just become ordinary expression w
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