reinitialize-instance (Standard Generic Function)

Syntax:

Method Signatures:

reinitialize-instance (instance standard-object) &rest initargs

Arguments and Values:

instance—an object.

initargs—an initialization argument list.

Description:

The generic function reinitialize-instance can be used to change the values of local slots of an instance according to initargs. This generic function can be called by users.

The system-supplied primary method for reinitialize-instance checks the validity of initargs and signals an error if an initarg is supplied that is not declared as valid. The method then calls the generic function shared-initialize with the following arguments: the instance, nil (which means no slots should be initialized according to their initforms), and the initargs it received.

Side Effects:

The generic function reinitialize-instance changes the values of local slots.

Exceptional Situations:

The system-supplied primary method for reinitialize-instance signals an error if an initarg is supplied that is not declared as valid.

See Also:

initialize-instance (Standard Generic Function), shared-initialize (Standard Generic Function), update-instance-for-redefined-class, update-instance-for-different-class, slot-boundp, slot-makunbound, Section 7.3 (Reinitializing an Instance), Section 7.1.4 (Rules for Initialization Arguments), Section 7.1.2 (Declaring the Validity of Initialization Arguments)

Notes:

Initargs are declared as valid by using the :initarg option to defclass, or by defining methods for reinitialize-instance or shared-initialize. The keyword name of each keyword parameter specifier in the lambda list of any method defined on reinitialize-instance or shared-initialize is declared as a valid initialization argument name for all classes for which that method is applicable.