Returns true if character is an alphabetic character or a numeric character; otherwise, returns false.
(alphanumericp #\Z)
→(alphanumericp #\9)
→(alphanumericp #\Newline)
→(alphanumericp #\#)
→
None. (In particular, the results of this predicate are independent of any special syntax which might have been enabled in the current readtable.)
Should signal an error of type type-error if character is not a character.
Alphanumeric characters are graphic as defined by graphic-char-p. The alphanumeric characters are a subset of the graphic characters.
The standard characters A
through Z
, a
through z
, and 0
through 9
are alphanumeric characters.
(alphanumericp x) ≡ (or (alpha-char-p x) (not (null (digit-char-p x))))