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cl:functions:alpha-char-p [2019/06/15 02:00]
cl:functions:alpha-char-p [2020/07/02 17:00] (current)
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 +====== Function ALPHA-CHAR-P ======
 +  * **alpha-char-p** //​character//​ → //​generalized-boolean//​
 +====Arguments and Values====
 +  * //​character//​ - a //​[[CL:​Glossary:​character]]//​.
 +  * //​generalized-boolean//​ - a //​[[CL:​Glossary:​generalized boolean]]//​.
 +Returns true if //​character//​ is an //​[[CL:​Glossary:​alphabetic]]//​ //​[[CL:​Glossary:​character]]//;​ otherwise, returns false.
 +(alpha-char-p #\a) <​r>//​[[CL:​Glossary:​true]]//​ </r>
 +(alpha-char-p #\5) <​r>//​[[CL:​Glossary:​false]]//​ </r>
 +(alpha-char-p #\Newline) <​r>//​[[CL:​Glossary:​false]]//​ </r>
 +;; This next example presupposes an implementation in which #\alfa is a defined character. ​
 +(alpha-char-p #\alfa) <​r>//​[[CL:​Glossary:​implementation-dependent]]//</​r>​
 +====Affected By====
 +None. (In particular, the results of this predicate are independent of any special syntax which might have been enabled in the //​[[CL:​Glossary:​current readtable]]//​.)
 +====Exceptional Situations====
 +Should signal an error of type type-error if //​character//​ is not a //​[[CL:​Glossary:​character]]//​.
 +====See Also====
 +**[[CL:​Functions:​alphanumericp|Function ALPHANUMERICP]]**,​ {\secref\ImplementationDefinedScripts}