Hi,
Following up from a couple of my previous posts, I am now wondering
how to do symbolic pattern matching for an expression of the following
form:
f, g = function('f g')
i = var('i')
expr = f(i+1) g(i)
I need to extract the "indices" i+1 and i from this expression.
If I simplify to
expr = f(i)
then I still can't work out how to pattern match this.
I tried patterns
w0 = SR.wild(0)
w1 = SR.wild(1)
expr.match( w0(w1) )
expr.match( w0[w1] )
but both give errors
If I use
expr.operator()
I get the response
f
But I cannot even test the type of this, since the type of f and the
type of g are different.
Presumably I am missing a key concept here. Any suggestions?
Thanks and best wishes,
David.
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