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dtrang
Member
posted
Hi,

I am trying to write my own function to perform some task.
Why does the following code not work?
DEFINE FUNCTION SUBTRACT (VAL1/D8, VAL2/D8)
SUBTRACT/D8.2 = VAL1 - VAL2;
END

-SET &myvar=SUBTRACT(3,1);

I could successfully use the subtract function in a statement such as:
...
PRINT
EVENT_TYPE_EN AND COMPUTE PROFIT/D8.2 = SUBTRACT(3,1);
...

So why can I not do:
-SET &myvar=SUBTRACT(3,1);

Thank you for your assistance.

-Daniel.,
 
Posts: 20 | Registered: April 05, 2006Report This Post
dhagen
Virtuoso
posted Hide Post
The define function is for "Focus" based code only. Therefore, it will not work with Dialog Manager (any line that starts with a '-' as in -SET). That means that you can use the function with defines and computes - not so sure about whens.


"There is no limit to what you can achieve ... if you don’t care who gets the credit." Roger Abbott
 
Posts: 1102 | Location: Toronto, Ontario | Registered: May 26, 2004Report This Post
Tony A
Expert
posted Hide Post
Really? then how does this code function?
DEFINE FUNCTION ELAPSED(X/A1)
DAY/YYMD = HDATE(TODAY('A10'),'YYMD');
DATE/A6YMD = DAY;
BEGTIME/A8 = EDIT('&TOD.EVAL', '99$:99$:99');
ENDTIME/A8 = EDIT(HHMMSS('A8'), '99$:99$:99');
BEGAN/A20 = DATE | ' ' | BEGTIME;
ENDED/A20 = DATE | ' ' | ENDTIME;
-* Convert to time stamps
DATE_TIME1/HYYMDSA=HINPUT(20,BEGAN,10,'HYYMDS');
DATE_TIME2/HYYMDSA=HINPUT(20,ENDED,10,'HYYMDS');
-*Subtract the two time stamps, getting difference in seconds
ELAPSED/D12.2=HDIFF(DATE_TIME2, DATE_TIME1, 'SECOND', 'D12.2');
END
-RUN

-* Find elapsed time
-SET &ELAPSED = ELAPSED('X');

-TYPE Elapsed Time (in seconds): &ELAPSED
-RUN


The answer is that you need to ensure the function SUBTRACT is loaded into memory by issuing a -RUN after the END statement
DEFINE FUNCTION SUBTRACT (VAL1/D8, VAL2/D8)
SUBTRACT/D8.2 = VAL1 - VAL2;
END
-RUN
-SET &myvar=SUBTRACT(3,1);


T


In FOCUS
since 1986		WebFOCUS Server 8.2.01M, thru 8.2.07 on Windows Svr 2008 R2  
WebFOCUS App Studio 8.2.06 standalone on Windows 10 
 
Posts: 5694 | Location: United Kingdom | Registered: April 08, 2004Report This Post
dtrang
Member
posted Hide Post
Thanks Tony that worked!
 
Posts: 20 | Registered: April 05, 2006Report This Post
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