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13 lines
307 B
13 lines
307 B
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Exercise 2.47: Here are two possible
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constructors for frames:
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(define (make-frame origin edge1 edge2)
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(list origin edge1 edge2))
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(define (make-frame origin edge1 edge2)
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(cons origin (cons edge1 edge2)))
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For each constructor supply the appropriate selectors to produce an
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implementation for frames.
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