RosettaCodeData/Task/Null-object/Oberon-2/null-object.oberon-2
2016-12-05 22:15:40 +01:00

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Text

MODULE Null;
IMPORT
Out;
TYPE
Object = POINTER TO ObjectDesc;
ObjectDesc = RECORD
END;
VAR
o: Object; (* default initialization to NIL *)
BEGIN
IF o = NIL THEN Out.String("o is NIL"); Out.Ln END
END Null.