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@ -4406,7 +4406,7 @@ You need a reason (use cases) for using a hierarchy.
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Point1 p12 {p11}; // a copy
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auto p21 = make_unique<Point2>(1, 2); // make an object on the free store
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auto p22 = p21.clone(); // make a copy
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auto p22 = p21->clone(); // make a copy
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// ...
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}
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