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isalnum-isxdigit

isalnum, isalpha, isascii, isblank, iscntrl, isdigit, isgraph, islower, isprint, ispunct, isspace, isupper, isxdigit Functions

Ctalk does not support ctype.h macros portably. Use the corresponding method of class Character instead. See Character. 

Ctype.h Macro          Ctalk Method
-------------          ------------
isalnum                isAlNum
isalpha                isAlpha
isascii                isASCII
isblank                isBlank
iscntrl                isCntrl
isdigit                isDigit
isgraph                isGraph
islower                isLower
isprint                isPrint
ispunct                isPunct
isspace                isSpace
isupper                isUpper
isxdigit               isXDigit