Re: [PATCH] Re: Creating books with Scheme

[Nicolas Sceaux]

Le 30 août 09 à 03:20, Carl Sorensen a écrit :

> On 8/29/09 7:01 PM, "Reinhold Kainhofer" <address@hidden>  
> wrote:
>
>
> > You mean something like this patch:
> >   http://codereview.appspot.com/112044
>
> LGTM.
>
> Just a question.  In your regression test, you first define (add-one- 
> score
> #f), then you set! it to a lambda function.
>
> Is that solely so that you can have pitch defined in the lexical  
> scope but
> outside of add-one-score?  Or is there more going on that I haven't  
> figured
> out?

Yes, that's to build a closure.
Now, as there is only one function using pitch, it can be simplied to
(define add-one-score
   (let ((pitch 0))
     (lambda (parser) ...)))