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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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17
Task/Null-object/Component-Pascal/null-object.pas Normal file
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MODULE ObjectNil;
IMPORT StdLog;
TYPE
Object = POINTER TO ObjectDesc;
ObjectDesc = RECORD
END;
VAR
x: Object; (* default initialization to NIL *)
PROCEDURE DoIt*;
BEGIN
IF x = NIL THEN
StdLog.String("x is NIL");StdLog.Ln
END
END DoIt;
END ObjectNil.