On Fri, Jun 14, 2019 at 10:45 AM Sanjeev Sharma <[email protected]> wrote:
> within this for loop is there any way to access different pieces of the
> description and amt? car-ing and cdr-ing for example?
>
I'm not entirely clear on what you're looking for, but maybe this helps?
(define lst '(a b c))
(for ([(val idx) (in-indexed lst)])
(displayln (cons val idx))
(when (< idx (sub1 (length lst)))
(displayln (format "\tnext val: ~a" (list-ref lst (add1 idx))))))
Output:
(a . 0)
next val: b
(b . 1)
next val: c
(c . 2)
> Or move the identifier definitions into the let*, and pass those to for in
> some way?
>
> (let*((ratio 9/12))
> (for((description(list "this" "that"))
> (amt(list 4467.61 2428.37)))
> (printf"~a ~a: changed values\n"
> description
> (cat(* amt ratio) -2.))))
>
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