Labels:dialog box | sky | window OCR: Object- Oriented Programming Character Instance Protocol Instance Protocol Class Protocol isLetter ValuenInteger isDigit passed returns $A isAlphaNumeric digitValuanInteger isLowercase passed returns isUppercase isSe parator space tab cr. line -feed form- -feed isVowe] i.O.UAEIOU There is only one object for $A There are 256 pre- allocated instances of Character asUppercase All rej ferences point S ercase OK t use asciiValue Strings store bytes but passed $A returns 65 "str at returns pointer to $A digit passed $4 returns Porter 2001 Justance isAlpha Numeric isVowel references asLowercase digitValue Hart
