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Re: substitution within a substitution list

  • To: mathgroup at smc.vnet.net
  • Subject: [mg88571] Re: substitution within a substitution list
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Fri, 9 May 2008 03:21:30 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <fvudmu$ebg$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

subs /. (b -> _) :> (b -> 2^6)

??

Regards
   Jens

Bipin wrote:
> HI,
> 
> I'm trying to find a way of changing the substitution values within a
> substitution list.
> 
> For example, if I have the following substitution list:-
> 
> subs = {a->1, b->2, c->2}
> 
> I want to programmatically replace the value associated with 'b' from
> 2 to 20, ie ending up with
> 
> subs = {a->1, b->20, c->2}
> 
> Does anyone know of a mathematica function for doing this?
> 
> Bipin.
> 


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