[plt-scheme] Re: plt-scheme Digest, Vol 9, Issue 14

Ok,
I am getting an error:
require: unknown module: platonic-letter

The files are exactly as you typed and in the same
directory.  I ran the program in module.

Am I missing something?

Dan

--- Matthias Felleisen <matthias at ccs.neu.edu> wrote:

> 1. You must require the module.
> 2. You must export the structure definition.
> 
> (module platonic-letter mzscheme
>    (define-struct letter(instance))
>    (define letters
>        (map make-letter '(a b c d e f g)))
>    (provide (struct letter (instance)) letters)
> )
> 
> 
> (module slip mzscheme
>    (require platonic-letter)
>    (provide (all-from platonic-letter))
>    (map letter-instance letters))
> 
> -- Matthias
> 
> 
> On May 11, 2006, at 5:50 PM, geb a wrote:
> 
> > Hello...
> >
> > Can someone tell me why I can't use structure
> > accessors for letters in module slip?
> >
> > Thank you for your time.
> >
> > Sincerely,
> >
> > Dan
> >
> > (module platonic-letter mzscheme
> >   (define-struct letter(instance))
> >   (define letters
> >       (map make-letter '(a b c d e f g)))
> >   (provide letter letters)
> > )
> >
> >
> > (module slip mzscheme
> >   (provide (all-from "platonic-letter.ss"))
> >   (map letter-instance letters))
> >
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