D Documentation  
* Constants
char[] hexdigits  = "0123456789ABCDEF";
char[] digits     = "0123456789"
char[] octdigits  = "01234567"
char[] lowercase  = "abcdefghijklmnopqrstuvwxyz"
char[] uppercase  = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
char[] letters    = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
char[] whitespace = " \t\v\r\n\f"

See also:
StringException
Created using PHP docwiki written by Markus Dangl. Best viewed with Mozilla Firefox.