Actionscript (along with most other languages) has a concept of null, but CF
doesn't.  That's probably what you're running into.  Definitely something CF
needs, particularly now that we have CFCs.

Cheers,
barneyb

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of Nathan Dintenfass
> Sent: Wednesday, February 25, 2004 1:02 PM
> To: [EMAIL PROTECTED]
> Subject: RE: [CFCDev] Testing For [undefined struct element]
> 
> structKeyExists() and isDefined() should be false if it's 
> truly "undefined"
> (as in CFARGUMENT with no default), so there must be some 
> other state you
> are experiencing -- bummer that this is even more complicated than we
> thought.
> 
> 
> 
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > Behalf Of David Ross
> > Sent: Wednesday, February 25, 2004 11:23 AM
> > To: [EMAIL PROTECTED]
> > Subject: [CFCDev] Testing For [undefined struct element]
> >
> >
> > This is along the lines of the <cfargument> tag bug? thread 
> a few weeks
> > ago. I have come across a situation where I have a coldfusion struct
> > that has [undefined struct element] in some of it's values, 
> and I can't
> > figure out how to test for it.
> >
> > Basically what is happening is that my CF struct came from 
> flash, and
> > in certain cases flash assigned "undefined" to certain 
> object members.
> > Now my data is back in CF, and I need to test  for these "undefined"
> > values. It's pretty quirky the way CF is handling this 
> situation... it
> > passes the isDefined() and structKeyExists() tests, yet 
> trying to access
> > it throws and error, so I can't test it's value (I guess it 
> doesn't have
> > one anyways). Is try/catch my only option? I think I can 
> work around the
> > issue but was wondering if anyone has any insight...
> >
> > thanks,
> >
> > Dave
> 
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