8 lines
169 B
Racket
8 lines
169 B
Racket
#lang racket
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(require 2htdp/universe 2htdp/image)
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(big-bang 0
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(on-tick add1 1/28 3)
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(to-draw (lambda (w) (circle (- 100 w) 'solid 'red))))
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