[plt-scheme] Error on DrScheme 301

Comments in the program seem to indicate that the Simply Scheme teachpack 
was written by Robby Findler. Daniel Yoo seems only to have authored an 
amendment.



----Original Message Follows----
From: Matthias Felleisen <matthias at ccs.neu.edu>
To: "wooks wooks" <wookiz at hotmail.com>
CC: plt-scheme at list.cs.brown.edu
Subject: Re: [plt-scheme] Error on DrScheme 301
Date: Fri, 16 Jun 2006 22:02:33 -0400


On Jun 16, 2006, at 9:46 PM, wooks wooks wrote:

>
>The only change that I have made  to the original settings is to set up 
>Simply Scheme as a language by running this
>
>http://hkn.eecs.berkeley.edu/~dyoo/cs3/simply-scheme/

Then dyoo's simply-scheme defines a stop function. Danny?

>I do not know how to do the things you mentioned in your email or why I 
>would want to do them.

Surely you know how to define a function with the name stop, like this:

(define (stop x) 0)

or

(define stop (lambda (x) 0))

I strongly recommend that you do not use the simply-scheme teachpack but 
some HtDP language. draw.ss and world.ss will work in there.

-- Matthias






>
>
>
>----Original Message Follows----
>From: Matthias Felleisen <matthias at ccs.neu.edu>
>To: "wooks wooks" <wookiz at hotmail.com>
>CC: plt-scheme at list.cs.brown.edu
>Subject: Re: [plt-scheme] Error  on DrScheme 301
>Date: Fri, 16 Jun 2006 15:51:17 -0400
>
>This is not an error in drscheme. It's an error in _your_ program or 
>drscheme settings:
>
>1. You have either included another teachpack that defines stop.
>
>2. Or you have defined stop in your Definitions Window.
>
>I will freely admit that this error message could be improved, especially 
>for people who are trying to learn to program.
>
>-- Matthias
>
>
>On Jun 16, 2006, at 3:28 PM, wooks wooks wrote:
>
>>
>>I get the error below if I try to load the hangman.ss and draw.ss 
>>teachpacks simultaneously without any other code.
>>
>>The teachpack file C:\Program Files\PLT\teachpack\htdp\draw.ss did not 
>>load properly.
>>teachpack: export of stop from #<path:C:\Program 
>>Files\PLT\teachpack\htdp\draw.ss> conflicts with already existing 
>>definitions
>>
>>
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