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allocate-instance (Standard Generic Function)

— Generic Function: allocate-instance class &rest initargs &key &allow-other-keys new-instance
Method Signatures:

allocate-instance (class standard-class) &rest initargs

allocate-instance (class structure-class) &rest initargs

Arguments and Values:

class—a class.

initargs—a list of keyword/value pairs (initialization argument names and values).

new-instance—an object whose class is class.


The generic function allocate-instance creates and returns a new instance of the class, without initializing it. When the class is a standard class, this means that the slots are unbound; when the class is a structure class, this means the slots' values are unspecified.

The caller of allocate-instance is expected to have already checked the initialization arguments.

The generic function allocate-instance is called by make-instance, as described in Section 7.1 (Object Creation and Initialization).

See Also:

defclass, make-instance, class-of, Section 7.1 (Object Creation and Initialization)


The consequences of adding methods to allocate-instance is unspecified. This capability might be added by the Metaobject Protocol.