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Array Problem
Message
De
21/08/2013 10:30:45
Mike Yearwood
Toronto, Ontario, Canada
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Versions des environnements
Visual FoxPro:
VFP 9 SP1
OS:
Windows XP SP3
Network:
Windows 2003 Server
Database:
Visual FoxPro
Application:
Desktop
Divers
Thread ID:
01580886
Message ID:
01580891
Vues:
67
>Hi Gang!
>
>My fellow colleague at work has this problem. He has this in some code
>
>
>PROCEDURE getArrayElement
>      PARAMETERS lnElement
>      pcTheData = laWarnLbl[lnElement]
>      RETURN pcTheData
>ENDPROC
>
>
>The above snippet of code is giving me the “invalid subscript reference” error on the “pcTheData = laWarnLbl[lnElement] line.
>
>The value of lnElement at this point is 1.
>
>And laWrnLbl is dimensioned to 6.
>
>Thanks

If you have a field called lnElement in the active table, and it has a value greater than 6, you will get this error. I strongly advise you to alter this routine so that it uses LPARAMETERS. It should receive the array as a parameter too. It should declare pcTheData LOCAL or not even use pcTheData at all. I'd write it this way.
getArrayElement.prg
LPARAMETERS lnElement,taArray
EXTERNAL ARRAY taArray && prevents compiler error.
RETURN taArray[m.lnElement]
and I'd call it like this
?GetArrayElement(5,@laWarnLbl)
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