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Re: Problem with matching

Josef Karthauser wrote:
> Can someone tell me why this doesn't match?
> F[{x, 2, c}]F[{x, 1, f}] /. F[{___, a_, ___}]F[{___, a_, ___}] :> yes
> I'm expecting 'yes' to be returned if any of the list arguments to F[]
> contain the same value.  It doesn't match however; what am I doing
> wrong?
> Thanks,
> Joe
> --
> Josef Karthauser (joe at
> FreeBSD (cvs meister, admin and hacker)
> Physics Particle Theory (student)
> ================ An eclectic mix of fact and theory. =================

This looks like a bug! It works if you make a tiny change:


David Bailey

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