[racket] Evaluating pict to string

A few minutes ago, Robby Findler wrote:
> Oh, I should point one thing that both Eli and I glossed over: there
> is some sharing between the sandboxed world and the outside world,
> roughly the racket/ base library. This is why, for example, when
> lists come out of the sandbox, they still appear to be
> lists. Overall, it is good to minimize such sharing, but being
> completely unshared is either inconvenient (for things like lists)
> and impossible (for things like the ability to connect to the
> underlying operating system -- this comes up more with the windowing
> portion of the GUI libraries, tho).

(To be even more pedantic: this kind of sharing is not really
specified as a default -- it's a result of lists being baked in as
primitive values that are shared among all instantiations and phases,
very much like prefab structs.)

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