[racket] Rosetta Code

A few minutes ago, Danny Yoo wrote:
> Yup; I've been doing so a little bit, fixing up some of the code
> snippets so they work on sequences rather than just on lists, and
> using "raise-argument-error" in favor of just plain error, since the
> error messages are better.  For example:
> 
>     http://rosettacode.org/wiki/Dot_product#Racket
>     http://rosettacode.org/wiki/A%2BB#Racket

Two comments:

* IMO having complete #lang-ed files is much better, since people get
  a working template file rather than a repl demonstration.

* -1 for the pedantics of errors etc in the second example -- I think
  that the main goal of these things is for quick impressions, and for
  that second example, a half-line

    (+ (read) (read))

  is *much* better-looking.  For extras like error checking, I'd defer
  them for an additional extended example with more stuff in.  (But in
  the case of error checking, I'd probably still skip it.)

-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                    http://barzilay.org/                   Maze is Life!