Common Lisp the Language, 2nd Edition


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28.1.12.1. Customizing Reinitialization

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Methods for the generic function reinitialize-instance may be defined to specify actions to be taken when an instance is updated. If only :after methods for reinitialize-instance are defined, they will be run after the system-supplied primary method for initialization and therefore will not interfere with the default behavior of reinitialize-instance.

Methods for shared-initialize may be defined to customize class redefinition (see section 28.1.9.5).
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