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(assoc obj alist)
Given an associative list, returns the pair that has obj as a car or #f if no such pair exists.
The associative key to locate.
The associative list.
(assoc "a" (("a" "b") ("c" "d"))) returns ("a" "b")
Norman Walsh, <ndw@nwalsh.com>
(define (assoc obj alist) ;; Returns the association of an object in an associative list (let loop ((al alist)) (if (null? al) #f (if (equal? obj (car (car al))) (car al) (loop (cdr al))))))
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