[plt-scheme] Using eval in modules

This works because you are calling (eval-string-with-1 "abc") from outside
the module - but it doesn't when the function is called from the inside the
module. For instance :

(module foo mzscheme
  (define  (abc x)
    (display "foo")
    (newline))

  (define  (eval-string-with-1 string)
    ((eval (string->symbol string)) 1))


  (eval-string-with-1 "abc")

  (provide eval-string-with-1
           abc))

(require foo)

Doesn't work. And that's what I need to do :/

On 6/23/07, Richard Cleis <rcleis at mac.com> wrote:
>
> A workaround depends on what you are trying to do.  For example, providing
> a function to evaluate a string works, but you also have to provide any
> function you intend to use.
> (module foo mzscheme
>   (define  (abc x)
>     (display "foo")
>     (newline))
>
>   (define  (eval-string-with-1 string)
>     ((eval (string->symbol string)) 1))
>
>   (provide eval-string-with-1
>            abc)
>   )
>
> (require foo)
>
> (eval-string-with-1 "abc")
>
> rac
>
>
>
>
> On Jun 23, 2007, at 8:56 AM, Jean-Pierre Lozi wrote:
>
> Hi all,
>
> How can I use eval in a module definition? For instance,
>
> (define (abc x)
>  (display "foo")
>  (newline))
>
> ((eval (string->symbol "abc")) 1)
>
> works, whereas
>
> (module foo mzxcheme
>  (define (abc x)
>   (display "foo")
>   (newline))
>
>   ((eval (string->symbol "abc")) 1))
>
> (require foo)
>
> doesn't. Eval appears too look for the abc function in the global
> namespace. Does anyone know a workaround?
>
> Thanks,
>
>
> --
> Jean-Pierre Lozi
> http://www.lozi.org
> mailto:jean-pierre at lozi.org
> _________________________________________________
>   For list-related administrative tasks:
>   http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>
>
>


-- 
Jean-Pierre Lozi
http://www.lozi.org
mailto:jean-pierre at lozi.org
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