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structure-class

structure-class System Class

Class Precedence List:

structure-class, class, standard-object, t

Description:

All classes defined by means of defstruct are instances of the class structure-class.

Expanded Reference: structure-class​

The structure-class Metaclass​

structure-class is the metaclass of classes created by defstruct (when no :type option is used).

(defstruct color r g b)
=> COLOR

(typep (find-class 'color) 'structure-class)
=> T

Distinguishing from standard-class​

(defclass my-object () ())
==> #<STANDARD-CLASS MY-OBJECT>

(typep (find-class 'my-object) 'structure-class)
=> NIL

(typep (find-class 'color) 'standard-class)
;; => NIL