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Nonkeyword-listp

Recognize lists of non-keywords.

Signature
(nonkeyword-listp x) → std::bool

This is an ordinary std::deflist. It is "strict" in that it requires x to be a "properly" nil-terminated list.

Definitions and Theorems

Function: nonkeyword-listp

(defun nonkeyword-listp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'nonkeyword-listp))
    (declare (ignorable __function__))
    (if (consp x)
        (and (not (keywordp (car x)))
             (nonkeyword-listp (cdr x)))
      (null x))))

Subtopics

Nonkeyword-listp-basics: Basic theorems about nonkeyword-listp, generated by std::deflist.