[plt-scheme] Newbie map question

You got it. :)

Robby

At Sat, 1 Jan 2005 21:35:55 +0100, Francisco Jesús Martínez Serrano wrote:
> Ok, silly me.
> 
> (define map+
>   (lambda vecs
>     (apply map + vecs)))
> 
> Many thanks.
> 
> On Thu, 30 Dec 2004 08:11:02 -0600, Robby Findler <robby at cs.uchicago.edu> wrote:
> > (map +) is not what you want. That means "apply map to one argument,
> > +". But map doesn't take just one argument (as the error message
> > informs you).
> > 
> > Apply takes two arguments (well, it takes more in truth, but you can
> > ignore that). The first argument is a function you want to apply and
> > the second is a list of arguments you want to apply it to. In your
> > case, I think you want map to be the first argument and you need to
> > build a list of the arguments to map.
> > 
> > After you get that working, I'd suggest going to read the manual on
> > what apply's other arguments do.
> > 
> > Robby
> >