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(define (make-table)
(list '*table*))
(define (key-assoc key records)
(cond
[(null? records) #f]
[(equal? key (caar records)) (car records)]
[else (key-assoc key (cdr records))]))
(define (lookup key table)
(let ([r (key-assoc key (cdr table))])
(if r
(cdr r)
#f)))
(define (table-insert! key value table)
(let ([r (key-assoc key (cdr table))])
(if r
(set-cdr! r value)
(set-cdr! table (cons (cons key value)
(cdr table))))))
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