exam9.5.8

366阅读 0评论2011-11-18 maunix
分类:LINUX

  1. ;; mht created on Nov 15, 2011

  2. ;; draw-circles : posn list-of-numbers -> boolean
  3. (define (draw-circles center a-list-of-nums)
  4.   (cond
  5.     [(empty? a-list-of-nums) false]
  6.     [else
  7.      (and
  8.       (draw-circle center (first a-list-of-nums)
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