AlNumP

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Data Structure Primitives

Predicates

circularP

AlphaP

AlNumP achar
AlNum? achar


outputs true if the input is a character in the subset of alphanumeric characters.

Examples:

alnum? "a ;true ;-) alnum? "A ;true ;-) alnum? "1 ;true ;-) alnum? 1 ;false ;-) alnum? "ü ;true ;-) alnum? "! ;false ;-)

circularP

AlphaP