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  ANSI Common Lisp   13 Characters   13.2 Dictionary of Characters

13.2.8 alpha-char-p Function

alpha-char-p character    generalized-boolean

Arguments and Values:
character - a character.

generalized-boolean - a generalized boolean.

Returns true if character is an alphabetic1 character; otherwise, returns false.

 (alpha-char-p #\a)  true
 (alpha-char-p #\5)  false
 (alpha-char-p #\Newline)  false
 ;; This next example presupposes an implementation
 ;; in which #\\alfa is a defined character.
 (alpha-char-p #\\alfa)  implementation-dependent

Affected By:
None. (In particular, the results of this predicate are independent of any special syntax which might have been enabled in the current readtable.)

Exceptional Situations:
Should signal an error of type type-error if character is not a character.

See Also:
alphanumericp, Section 13.1.10 Documentation of Implementation-Defined Scripts

Allegro CL Implementation Details:

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