initialize-instance (instance standard-object
) &rest initargs
instance—an object.
initargs—a defaulted initialization argument list.
Called by make-instance
to initialize a newly created instance.
The generic function is called with the new instance
and the defaulted initialization argument list.
The system-supplied primary method on initialize-instance
initializes the slots of the instance with values according
to the initargs and the :initform forms of the slots.
It does this by calling the generic function shared-initialize
with the following arguments: the instance, t
(this indicates
that all slots for which no initialization arguments are provided
should be initialized according to their :initform forms), and
the initargs.
Programmers can define methods for initialize-instance
to
specify actions to be taken when an instance is initialized. If only
after methods are defined, they will be run after the
system-supplied primary method for initialization and therefore will
not interfere with the default behavior of initialize-instance
.
shared-initialize (Standard Generic Function), make-instance, slot-boundp, slot-makunbound, Section 7.1 (Object Creation and Initialization), Section 7.1.4 (Rules for Initialization Arguments), Section 7.1.2 (Declaring the Validity of Initialization Arguments)