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MathGroup Archive 2006

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Re: a list as an option

  • To: mathgroup at
  • Subject: [mg67198] Re: [mg67150] a list as an option
  • From: Bob Hanlon <hanlonr at>
  • Date: Sun, 11 Jun 2006 23:08:07 -0400 (EDT)
  • Reply-to: hanlonr at
  • Sender: owner-wri-mathgroup at




{opt -> 1, pars -> {d, b, c}}

Bob Hanlon

---- Akane Tendo <akane at> wrote: 
> Hello,
> If I have a function f with options like:
> Options[f]=[...,{pars->{a,b,c}}]
> How can I change just one of 'pars' options ('a', 'b' or 'c')?
> I tried to change, for example, 'a' to 'd' like this:
> SetOptions[f,pars[[1]]->d]
> But it didn't work.
> I also tried to access the option:
> Options[f,pars]
> And the result is: {}
> Does anyone know what am I doing wrong or if it's not possible at all to 
> have a list as an option?
> Thank you!! 


Bob Hanlon
hanlonr at

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