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Standard Generic Function

allocate-instance

Syntax

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

classa class.
initargsa list of keyword/value pairs (initialization argument names and values).
new-instancean object whose class is class.

Description

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 Object Creation and Initialization.

See Also

defclass, make-instance, class-of, Object Creation and Initialization

Notes

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

Backlinks

Declaring the Validity of Initialization Arguments, Definitions of Make-Instance and Initialize-Instance, Initialization Arguments, make-instance, make-load-form-saving-slots, make-load-form, Objects Dictionary, shared-initialize, Symbols in the COMMON-LISP Package