The Lexical Class function returns the class number for char. If char is a string, this function uses the first character in the string. If char is a number, this function interprets it as the ASCII value of a character.
Usage
The class number is a number that corresponds to the lexical class. Refer to the ASCII Codes table for the numbers that correspond to each character.
Class Number
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Lexical Class
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0
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Extended characters (codes 128 through 255)
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1
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Non-displayable ASCII characters (codes 0 to 31 excluding 9 through 13)
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2
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White space characters: Space, Tab, Carriage Return, Form Feed, Newline, and Vertical Tab (codes 32, 9, 13, 12, 10, and 11, respectively)
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3
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Digits 0 through 9
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4
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Uppercase characters A through Z
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5
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Lowercase characters a through z
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6
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All printable ASCII non-alphanumeric characters
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History
Version
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Change(s)
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More info to come.
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See Also
External Links