Function: eieio-instance-tracker--eieio-childp

eieio-instance-tracker--eieio-childp is a byte-compiled function defined in eieio-base.el.gz.

Signature

(eieio-instance-tracker--eieio-childp OBJ)

Documentation

Return non-nil if OBJ is an object of type eieio-instance-tracker(var)/eieio-instance-tracker(fun) or a subclass.

Aliases

eieio-instance-tracker-child-p (obsolete since 25.1)

Source Code

;; Defined in /usr/src/emacs/lisp/emacs-lisp/eieio-base.el.gz
;;; eieio-instance-tracker
;;
;; Track all created instances of this class.
;; The class must initialize the `tracking-symbol' slot, and that
;; symbol is then used to contain these objects.
(defclass eieio-instance-tracker ()
  ((tracking-symbol :type symbol
		    :allocation :class
		    :documentation
		    "The symbol used to maintain a list of our instances.
The instance list is treated as a variable, with new instances added to it.")
   )
  "This special class enables instance tracking.
Inheritors from this class must overload `tracking-symbol' which is
a variable symbol used to store a list of all instances."
  :abstract t)