[racket] Implementing an equal? method for a class

A few minutes ago, Matthias Felleisen wrote:
> 
> For 81 slots, I'd actually use a (define b (make-vector 81 0))
> instead and use an access polynomial. I am almost certain that it is
> faster.

(+1; I forgot to say that keeping the vector-of-vectors private will
make such a change easy...)

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