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What postcondition should we use?

What postcondition should we use?. (define drawing- munge (lambda (thingy) (drawing- h shift thingy (drawing-width thingy ))))) The result is the same width as thingy The result overlaps thingy The result is below thingy The result is immediately to the right of thingy

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What postcondition should we use?

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  1. What postcondition should we use? (define drawing-munge (lambda (thingy) (drawing-hshift thingy (drawing-width thingy))))) • The result is the same width as thingy • The result overlaps thingy • The result is below thingy • The result is immediately to the right of thingy • A and D

  2. What preconditions should we use? (define drawing-munge (lambda (amt thingy) (drawing-hshift (drawing-vscaleamt thingy) thingy))) • amtmust be a number • (real? amt) is #t • thingy must be a real number • (drawing? thingy) is #t • None of the above

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