Function: ring-p

ring-p is an autoloaded and byte-compiled function defined in ring.el.gz.

Signature

(ring-p X)

Documentation

Return t if X is a ring; nil otherwise.

View in manual

Source Code

;; Defined in /usr/src/emacs/lisp/emacs-lisp/ring.el.gz
;;; User Functions:

;;;###autoload
(defun ring-p (x)
  "Return t if X is a ring; nil otherwise."
  (and (consp x) (integerp (car x))
       (consp (cdr x)) (integerp (cadr x))
       (vectorp (cddr x))))