at the very least, he may use a fac-simile
(define (for/list from to f)
(if (> from to) '()
(cons (f from)
(for/list (+ 1 from) to f))))
(define (id x) x)
(define (double n) (+ n n))
(define (fact n) (apply + (for/list 1 n id)))
(for/list 1 10 double)
(for/list 1 10 fact)
(for/list 1 10 (lambda (n) (cons n (fact (double n)))))
teach the kid fold and map too... ;)
On Fri, Apr 20, 2012 at 12:30 AM, John Clements
<cleme...@brinckerhoff.org>wrote:
> Is WeScheme pinned on beginner for a while? My son is interested in
> writing a simple turn-based RPG in WeScheme---something it seems admirably
> suited for, by and large--but I'm dying for things like for/list. Am I
> missing a simple switch that would allow me to use other language levels?
> The expansion-based structure of racket suggests that the full racket
> language could be hiding underneath. No?
>
> John
>
>
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