abstract class $IS_NIL


Descendants
$NIL RECTANGLE RAT $STRINGS
$FSTRINGS $FSTRING{_} $FTEXT_STRING{_} $FTEXT_STRING{_,_,_}
FSTR FRUNES FBINSTR $SEARCH{_,_}
$STRING{_,_,_} BINSTR $TEXT_STRING{_,_,_} RUNES
HEX_STR STR $STRING{_} $TEXT_STRING{_}
TOKEN $ENUMS{_} NUM_SIGNS MAP_MODES
MONETARY_UNITS DATE_SUFFICES UNIT_KINDS FILE_KINDS
SALUTATIONS DIRECTIONS CONVERSION_RESULTS CAL_DISPLAY_ORDERS
DATE_FORMS CURSOR_ERRORS NAME_CODES TIME_SUFFIX
INFO_KINDS CHAR_MAPPINGS PHONE_CODES FLUSH_CMDS
FILE_MODES WEEKDAYS SYMBOLS ERE_ERROR_KINDS
CONDITIONALS ADDRESS_KEYS PATH_KINDS DT_CODES
UNITS ACCESS_CODES CATEGORIES TRI_STATE
MAP_PARTS ADDRESS_CODES ERE_LEX_TOKENS MONTHS
MON_SPACING SYS_CHANS PERMISSIONS SYS_EXCEPT
SIGN_POSITIONS CODE_KINDS FILE_LOCS VERSION_KEYS
CAT_STANDARDS CHAR_CLASS SCRIPTS $VALUE{_}
$ORDERED{_} ELAPSED ANGLE TIMES
CHAR_CODE UNICODE TIME_STAMP ANGLED
$CHAR{_} RUNE CHAR ORDER_WEIGHT
$DATES{_} DATES ERA_DATES $NFE{_}
MONEY $WHOLE_NUM{_} $CARDINAL{_} $INTEGER{_}
INT FIELD CARD INTI
$ARITHMETIC{_} $RATIONAL{_} $REAL{_} FLT
FLTD $COMPLEX{_,_} CPXD CPX
$SIMPLE_NUM{_}



Public


Features
is_nil : BOOL ;

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