Wow, this is amazing! Thanks a lot Christian!

Jinsong

On Thu, Jul 14, 2016 at 3:05 AM, Christian Kellermann <[email protected]>
wrote:

> * Jinsong Liang <[email protected]> [160714 04:26]:
> > Hi,
> >
> > I want to do nested loops over three lists like the following pseudo
> code:
> >
> > for i in '(1 2 3)
> >     for j in '(4 5 6)
> >         for k in '(7 8 9)
> >           //do calculation using i, j, and k. The three lists are not
> > related.
> >         end
> >     end
> > end
> >
> > What is the best way to do this in Chicken? I can use (for-each ...) or
> (do
> > ...) but it seems neither is straightforward.
>
> Without knowing the purpose of this it's hard to say.  However scheme
> is flexible enough to allow an almost verbatim translation using
> foof-loop:
>
> (use foof-loop)
>
> (loop ((for i (in-list '(1 2 3))))
>       (loop ((for j (in-list '(4 5 6))))
>                   (loop ((for k (in-list '(7 8 9))))
>                                     (print "Magic " i "+" j "+" k " = " (+
> i j k)))))
>
> HTH,
>
> Christian
>
> --
> May you be peaceful, may you live in safety, may you be free from
> suffering, and may you live with ease.
>
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