[racket] How can I speed up this code?

On Mon, Jan 14, 2013 at 3:59 PM, Danny Yoo <dyoo at hashcollision.org> wrote:
>
> 1.  First, pull all the content of the input port into a string port.
> This cut down the runtime from 52 seconds to 45 seconds.  (15%
> improvement)

I find it hard to believe that this is a good idea.  In particular, it
vastly increases the memory use required to parse, as well as
requiring two passes over the input, whereas previously only one was
required.

Sam