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added universe-test

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This commit is contained in:
John Clements 2010-10-21 07:18:08 -07:00
parent 4577de0790
commit b37187da59
1 changed files with 11 additions and 0 deletions
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collects/tests/stepper/universe-test.rkt Normal file
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;; The first three lines of this file were inserted by DrRacket. They record metadata
;; about the language level of this file in a form that our tools can easily process.
#reader(lib "htdp-intermediate-reader.ss" "lang")((modname universe-test) (read-case-sensitive #t) (teachpacks ((lib "universe.ss" "teachpack" "2htdp") (lib "image.ss" "teachpack" "2htdp"))) (htdp-settings #(#t constructor repeating-decimal #f #t none #f ((lib "universe.ss" "teachpack" "2htdp") (lib "image.ss" "teachpack" "2htdp")))))
(define (zug state)
(overlay
(rectangle 100 state "solid" "blue")
(rectangle 100 200 "solid" "red")))
(big-bang 14
(on-tick add1)
(to-draw zug))