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Re: Help with HoldAll needed

  • To: mathgroup at smc.vnet.net
  • Subject: [mg100923] Re: Help with HoldAll needed
  • From: Raffy <raffy at mac.com>
  • Date: Thu, 18 Jun 2009 04:54:01 -0400 (EDT)
  • References: <h1aaej$8k1$1@smc.vnet.net>

On Jun 17, 1:45 am, Erich Neuwirth <erich.neuwi... at univie.ac.at>
wrote:
> I define
>
> MyFun[x_]:=Unevaluated[x]
> SetAttributes[MyFun,HoldAllComplete]
>
> MyFun[2 = 3]
> still evaluated the argument and of course produces an error
> I would like to get the unevaluated expression to be able
> to separate the first argument.
>
> In fact, I would like MyFun to be a macro which allows me
> to play list processing games with the arguments.
>
> How can this be accomplished?

Use Hold instead of Unevaluated.


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