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Lisp Control and Data Structures

Lisp Control and Data Structures. CIS 479/579 Bruce R. Maxim UM-Dearborn. and. (and nil t t) nil > (and t nil t) nil > (and 1 2 3) 3 > (defun sign (a b) (and (oddp a) (oddp b) 'both-odd) ) sign > (sign 2 3) nil > (sign 3 5) both-odd. or. > (or t nil t) t > (or 1 2 3) 1

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