You can also use for/string to make a pretty compact version. Robby
On Sun, Aug 28, 2011 at 5:18 AM, Eli Barzilay <e...@barzilay.org> wrote: > 40 minutes ago, Joan Arnaldich wrote: >> level 2 will always be ugly without the Python maketrans function. I >> used a hash: https://gist.github.com/3151724e7ac74264c52e. > > Here's another: > > (define (translate str) > (define A (char->integer #\a)) > (define (rotate x) (+ A (modulo (- x A -2) 26))) > (regexp-replace* #rx#"[a-z]" str (λ (m) (bytes (rotate (bytes-ref m 0)))))) > > In any case, it's easy to write some tr-style utility, the question is > whether it has any practical use. (I've seen a number, they were all > from such toys.) > > -- > ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: > http://barzilay.org/ Maze is Life! > > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
