Re: displaying unevaluated arguments
- To: mathgroup at smc.vnet.net
- Subject: [mg31121] Re: [mg31115] displaying unevaluated arguments
- From: BobHanlon at aol.com
- Date: Fri, 12 Oct 2001 03:36:38 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
In a message dated 2001/10/10 7:43:47 PM, mcoleman at bondspace.com 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
>first.
>
SetAttributes[f, HoldFirst];
f[x_] := ToString[HoldForm[x]];
y= 2;
f[{y^2,Sin[y],Log[y],Map[Cos[#]&,y]}]
Bob Hanlon
Chantilly, VA USA