Class

Package

clos

Superclasses

function
standard-object

Subclasses

generic-function

Description

The metaclass funcallable-standard-object provides the default :direct-superclasses for instances of funcallable-standard-class and its subclasses.

funcallable-standard-object is implemented as described in AMOP except for a different order in the class precedence list.

In AMOP the class precedence list is

(funcallable-standard-object standard-object function t)

whereas in LispWorks the class precedence list is

(funcallable-standard-object function standard-object t)

LispWorks is like this to be compliant with the rules in the ANSI Common Lisp Standard.

The AMOP class precedence list implies a class precedence for generic-function which violates the last sentence in ANSI Common Lisp 4.2.2 Type Relationships. See www.lispworks.com/reference/HyperSpec/Body/04_bb.htm.