On Wed, Nov 10, 2010 at 12:13 AM, John Clements <cleme...@brinckerhoff.org> wrote: > ;; NOW I'M A STUDENT: > > ;; only-long-strings : (listof string) -> (listof string) > ;; return a list containing the strings longer than 2 chars > (define/noloop (only-long-strings l) > (cond [(empty? l) empty] > [else (cond [(< 2 (string-length (first l))) > (cons (first l) > (only-long-strings (rest l)))] > [else (only-long-strings l)])]))
gosh, students do suck. I guess you teach them to use cond because it's a generalized if. But then they proceed to use it just like if: always two conditions per (verbose) cond! :p then again, may be someone who had previous exposure to lesser languages... _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
