13.2.7 characterp [Function]

characterp object ⇒ generalized-boolean

Arguments and Values::

object—an object.

generalized-boolean—a generalized boolean.

Description::

Returns true if object is of type character; otherwise, returns false.

Examples::

      (characterp #\a) ⇒  true
      (characterp 'a) ⇒  false
      (characterp "a") ⇒  false
      (characterp 65.) ⇒  false
      (characterp #\Newline) ⇒  true
      ;; This next example presupposes an implementation
      ;; in which #\Rubout is an implementation-defined character.
      (characterp #\Rubout) ⇒  true

See Also::

character (type and function), typep

Notes::

      (characterp object) == (typep object 'character)