Definitions

Instances

In CLOS, there is a clear distinction between classes and instances. CLOS is not a prototype-based object system.

: An instance is a Common Lisp object, one of a group of zero or more instances of a class. An instance may have a default state derived from the class definition, or may have its own particular state.
An instance may use a method defined on its class or on one of the class's superclasses, or may have its own method. See the next section for the definition of methods.
Every Common Lisp object, including class objects, is an instance of some class.
: An instance may use a method defined on its class or on one of the class's superclasses, or may have its own method. See the next section for the definition of methods.
Every Common Lisp object, including class objects, is an instance of some class.
: Every Common Lisp object, including class objects, is an instance of some class.

Gettmg Started with MCL - 19 OCT 1996