[plt-scheme] cannot get mapping over procedures (procedure applications) to work

Hi Jon, Hi Will,

thanks a lot for the ultra-quick help!  It's clear now.

Ciao,
Sigrid




Am 27.04.2009 um 17:21 schrieb Jon Zeppieri:

>
>
> On Mon, Apr 27, 2009 at 11:16 AM, keydana at gmx.de <keydana at gmx.de>  
> wrote:
> Hi all,
>
> this seems like a horribly stupid thing to ask, but I have problems  
> to map over procedures (in order to apply them). When I try
>
> (map (lambda (fun) (fun 1 2)) '(* +))
>
> I get
>
> "procedure application: expected procedure, given: *; arguments  
> were: 1 2"
>
>
> The problem here is that '(* +) is a list containing the symbols *  
> and +, not the functions.  You want (list * +) or `(,* ,+).
>
>

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