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MathGroup Archive 2007

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Re: Default value

  • To: mathgroup at
  • Subject: [mg74864] Re: [mg74850] Default value
  • From: "Adriano Pascoletti" <pascolet at>
  • Date: Mon, 9 Apr 2007 06:10:44 -0400 (EDT)

This should solve your problem

f[i_, m_, iv_] := {i, m, iv}
f[i_, m_] := f[i, m, i]

Adriano Pascoletti

On 4/8/07, Bruno Campanini <BC at> wrote:
> I have a function   f [ i_, m_, iv_ ]  and would like
> to have a default value for iv equal to i.
> I neither can write   f [ i_, m_, iv_: i_ ], nor   f [ i_, m_, iv_ : i ]
> ans the error "Default value for iv_ contains a pattern" arises.
> Any workaround?
> Bruno

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