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MathGroup Archive 2006

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Re: transforming a rule of lists to a list of rules

  • To: mathgroup at smc.vnet.net
  • Subject: [mg69150] Re: transforming a rule of lists to a list of rules
  • From: "dennis" <dwangsness at earthlink.net>
  • Date: Thu, 31 Aug 2006 04:39:05 -0400 (EDT)
  • References: <ed3qil$rn5$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Ken,

How about

 r= {a,b,c} -> {0,3,x}

MapThread[#1->#2&,{First[r],Last[r]}]

Dennis


Ken Senior wrote:
> Hello everyone.
>
> Does anyone know a way to transform a rule involving a list into a list
> of individual rules, that is to interpret the rule elementwise?  For
> example, given
>
>    {a,b,c} -> {0,3,x}
>
> is there a transformation which will turn this into
> 
>    {a->0, b->3, c->x}
> 
> Thanks for the help!
> 
> Ken


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