I think the call to "values" is misplaced.

Here's a functioning version of foo, and a perhaps more concise alternative:

(define (foo . L)
  (let ([bar (string-join (build-list (length L) (λ (x) "~a")) "")])
    (apply format bar L)))

(define (my-foo . L)
  (string-join (map ~a L) ""))

On Fri, Jul 3, 2015 at 4:06 PM, mazert <[email protected]> wrote:
> Hello,
>
> To directly go to the essential : here is an example :
>
> (define (foo . L)
>   (let ([bar (string-join (build-list (length L) (λ (x) "~a")) "")])
>     (format bar (apply values L))))
>
> Globally, I want to use a function who has variable parameters within a
> function who has variable parameters too.
>
> It is possible ?
> Thanks in advance.
>
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