abstract class $IS_NIL


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



Public


Features
is_nil : BOOL ;

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