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class Types and Classes Dictionary structure-class
System Class

built-in-class

Class Precedence List

built-in-class, class, standard-object, t

Description

A built-in class is a class whose instances have restricted capabilities or special representations. Attempting to use defclass to define subclasses of a built-in class signals an error of type error. Calling make-instance to create an instance of a built-in class signals an error of type error. Calling slot-value on an instance of a built-in class signals an error of type error. Redefining a built-in class or using change-class to change the class of an instance to or from a built-in class signals an error of type error. However, built-in classes can be used as parameter specializers in methods.

Backlinks

Classes, Integrating Types and Classes, slot-boundp, slot-makunbound, slot-value, Standard Metaclasses, Symbols in the COMMON-LISP Package, Type Specifiers, Types and Classes Dictionary