Caché ObjectScript Reference - InterSystems Documentation

System and Other FunctionsExampleThe following example tests the null subscript mode. If null subscripts are enabled for thecurrent process, it creates some.NullSubsTestSET b=$ZUTIL(68,1)IF b=1 {WRITE !,"null subscripts enabled locally",!UseNullSubsSET ^x("")=99,^x(0)=0,^x(1)=1ZWRITE ^xQUIT }ELSE {WRITE !,"will enable null subscripts"SET y=$ZUTIL(68,1,1) ; enable for current processWRITE !,"null subscripts now enabled locally"GOTO UseNullSubs}QUITSee Also• $ZUTIL(69,1) — Null Subscript Mode System Default function$ZUTIL(68,2)Sets sequential file open mode for the current process.$ZUTIL(68,2,n)$ZU(68,2,n)ParametersnThe boolean value that specifies the process-specific default mode for sequentialfiles on OPEN.DescriptionThe $ZUTIL(68,2) function specifies the open mode for sequential files opened by the currentprocess. When the current process issues an OPEN command for a sequential file, that fileis opened either in read-only mode (R) or read/write mode (RW). Calling $ZUTIL(68,2)specifies this open mode for the current process, overriding the system-wide default setting.On VMS systems, the default value is 1. On all other platforms, the default value is 0.Invoking $ZUTIL(68,2) without specifying n returns the current switch setting.600 Caché ObjectScript Reference