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MathGroup Archive 2005

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Re: Options in user-defined functions...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg60343] Re: [mg60332] Options in user-defined functions...
  • From: Manuel Schmidt <Manuel.Schmidt at physik.uni-wuerzburg.de>
  • Date: Wed, 14 Sep 2005 03:27:11 -0400 (EDT)
  • References: <200509131007.GAA09758@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

try this code:

Options[func]={option1->False,option2->True};
func[x1_,x2_,optns___]:=Block[{someInternalVariables,o1Flag,o2Flag},
	o1Flag=option1/.{optns}/.Options[func];
	o2Flag=...
]

Regards,
Manuel


On Tue, 2005-09-13 at 06:07 -0400, Daniele Lupo wrote:
> Hi to all.
> 
> I've a little problem with a function. I've defined it in this way:
> 
> fun[x_,op1_:1,op2_:2,op3_:3]:=
> Module[{....},f1[x,op1],f2[x,op2],f3[x,op3]]
> 
> So, when I use it, ops have their default values.
> 
> It works, but I'd like to use option; this why, if I want to change only
> op3, I must to write every argument when I call the function, while I'd
> like to write something like this:
> 
> fun[x,op3->4]
> 
> how can I do it?
> 
> Thanks for you answers
> 
> Daniele


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