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Re: Problem with matching.

  • To: mathgroup at
  • Subject: [mg53936] Re: [mg53907] Problem with matching.
  • From: yehuda ben-shimol <benshimo at>
  • Date: Fri, 4 Feb 2005 04:12:13 -0500 (EST)
  • References: <>
  • Sender: owner-wri-mathgroup at

you should write
F[{x, 2, c}]F[{x, 1, f}] /. F[{x___, a_, y___}]F[{z___, a_, w___}] :> yes
and get True
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
>Josef Karthauser (joe at
>FreeBSD (cvs meister, admin and hacker)
>Physics Particle Theory (student)
>================ An eclectic mix of fact and theory. =================

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