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How do I provide reference counting with copy-on-write semantics for a hierarchy of classes?

April 26, 2017classes copy-on-write counting hierarchy Reference semantics

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How do I provide reference counting with copy-on-write semantics for a hierarchy of classes?

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The previous FAQ presented a reference counting scheme that provided users with reference semantics, but did so for a single class rather than for a hierarchy of classes. This FAQ extends the previous technique to allow for a hierarchy of classes.