[plt-scheme] Not able to use for or for/list in DrScheme

On Jul 26, Gregory Woodhouse wrote:
> 'm running Pretty Big in 4.02 and get the following
> 
> Welcome to DrScheme, version 4.0.2 [3m].
> Language: Pretty Big (includes MrEd and Advanced Student); memory  
> limit: 128 megabytes.
>  > (for ([i '(1 2 3)]) (display i))
> . . reference to undefined identifier: for

`Pretty Big' is a legacy language -- it is based on the lagacy
`mzscheme' language, which doesn'y have `for'.

> By contrast, in mzscheme, I get
> 
> ~:$ mzscheme
> Welcome to MzScheme v4.0.2 [3m], Copyright (c) 2004-2008 PLT Scheme Inc.
>  > (for ([i '(1 2 3)]) (display i))
> 123>
> 
> as expected.
> 
> Is there another language setting I should be using?

Use the module language, and begin your definitions with

  #lang scheme

-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                  http://www.barzilay.org/                 Maze is Life!