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Re: displaying unevaluated arguments

  • To: mathgroup at
  • Subject: [mg31121] Re: [mg31115] displaying unevaluated arguments
  • From: BobHanlon at
  • Date: Fri, 12 Oct 2001 03:36:38 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

In a message dated 2001/10/10 7:43:47 PM, mcoleman at writes:

>Is there a simple way to create the string form of an argument passed 
>to a function/module? For instance, let
>f[x_] := Module[ Some Mathematica Code... .];
>Assume that y is defined as a list of numbers. If I evaluate
>   f[{y^2,Sin[y],Log[y],Map[Cos[#]&,y]}], 
>I would like to get back   "{y^2,Sin[y],Log[y],Map[Cos[#]&,y]}" ,
>rather than the evaluated numerical values. When I create a function, 
>HoldForm does not seem to work. The arguement is always evaluated

SetAttributes[f, HoldFirst];

f[x_] := ToString[HoldForm[x]];

y= 2;


Bob Hanlon
Chantilly, VA  USA

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