goloroden/gist:bb3204e721ac5af32c3a

Created April 19, 2015 19:16

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Countdown with (do)

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gistfile1.lisp

	(defun launch (n)
	(do ((cnt n (- cnt 1)))
	((zerop cnt) (format t "Blast off!"))
	(format t "~S..." cnt)))

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