CG subclasses from AtomicExpr.
On Thu, Jun 30, 2011 at 18:50, Aaron Meurer <[email protected]> wrote:
> What does your CG subclass from? If it's a Function, I think it
> should automatically work, like
>
> In [50]: a = Wild('a')
>
> In [51]: f(1, 2).match(f(a, 2))
> Out[51]: {a: 1}
>
> Aaron Meurer
>
> On Thu, Jun 30, 2011 at 3:04 PM, Sean Vig <[email protected]> wrote:
> > Hi everyone,
> > For a part of my project I tried using pattern matching with .match and
> > Wild, as described
> > here http://docs.sympy.org/0.7.0/tutorial.html#pattern-matching, to
> match
> > some instances of a class I am working on, however it does not currently
> > work as I'd hoped in trying to match objects of CG, which subclasses
> Expr.
> > For example, I'd like to be able to get
> >>>> x = Wild('x')
> >>>> (CG(1,1,1,1,1,1)).match(CG(x,1,1,1,1,1)
> > {x: 1}
> > However it currently gives None. I assume I need to implement some
> function
> > (maybe matches or _matches), but if someone knows a bit more about
> pattern
> > matching that could advise me here, I'd appreciate it. Thanks.
> > Sean
> >
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