Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!wuarchive!uunet!munnari.oz.au!uniwa!fennel.cc.uwa.oz.au!a_dent
From: a_dent@fennel.cc.uwa.oz.au
Newsgroups: comp.databases
Subject: Re: Repost: FOXbase+/mac UDFS ??
Message-ID: <1991Jan3.213418.2733@fennel.cc.uwa.oz.au>
Date: 3 Jan 91 13:34:18 GMT
References: <52155@eerie.acsu.Buffalo.EDU> <52505@eerie.acsu.Buffalo.EDU>
Organization: University of Western Australia
Lines: 33

In article <52505@eerie.acsu.Buffalo.EDU>, cjohnson@acsu.buffalo.edu (charles johnson) writes:
> 
> I am having problems with passing values back from UDFS
> the following is an example

You didn't include quite enough information for me to be sure but I would try
the following two changes:
1) include the line "PRIVATE ans"
2) assign some value to ans before the GET

Note, something that may help you understand UDFs is the following note from
some of our research into how FoxBASE+/Mac works...

"
If we pass an expression, the PARAMETER variable is PRIVATE.  However, if we
pass a variable, the value of the PARAMETER variable is copied back to the
caller, even if they are different names!  So, in Pascal terms, passing an
expression gives you Call-by-value and passing a variable gives you
Call-by-reference.
"
> 
> thanks
No problem.  (Sorry I can't mail direct...)

> 
> -- 
> Charles Johnson        Database Programmer  cjohnson@acsu.buffalo.edu
> School of Dental Medicine    716 834 2057 ext 28
> Advanced Educational Technologies Lab  342 Squire Hall
Andy Dent                     A.D. Software phone 09 249 2719
Mac & VAX programmer          94 Bermuda Dve, Ballajura
a_dent@fennel.cc.uwa.oz       Western Australia  6066     
a_dent@fennel.cc.uwa.oz.AU (international)