Objects + Tests = Magic
08_katapotter
08_katapotter
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is empty => 0.0<br />
Let discounts = {d ∈ Discount | d can be applied to b}<br />
discounts is empty => |books|b * PRICE<br />
Let candidates = { p ∈ R | d ∈ discounts, p = compute(b,d) }<br />
=> min(candidates)<br />
Let local price = d applied to b<br />
Let remaining = clone of b without the books used in d<br />
=> local price + compute(remaining)
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