V4MD Noob: VOID instead of Vset with zero records?

[Bart Pietercil]

Hi Marc,

well it has been a few years since I left behind Director (or did it  
left me behind?) but the case you are describing seems to be something  
along the lines of
-- pseudocode
myVSet  = BuildVSet()
if not objectP(myVSet) (or if VoidP(myVSet)) then
   --return an empty VSet
  myVSet =  new VSet() --zero records set
end if
return myVSet

or maybe I am missing your point ?

hth

Bart Pietercil

On 22-apr-08, at 01:27, Sean Wilson wrote:

>
>> But, just to clarify my point of view: Let's say you manipulate a  
>> string and the resulted string would have zero characters in it,  
>> would you expect that this result becomes an 'undefined' object and  
>> had lost all its string-functionality? And then you would have to  
>> substitute this undefined object everytime with a handmade empty  
>> string?
>
> Absolutely not. I, too, would be horrified.
> Perhaps you should post a code snippet. From your original post it  
> sounded as though you were calling an xtra function that returned a  
> value that you *expected* was going to be a list but was VOID. All I  
> was trying to say - and it sounds like you agree - is that if you  
> call an "external" function that returns data to you and you are  
> relying on this data to be of a particular type before proceeding,  
> then it's incumbent on you to type-check. Lingo is a loosely typed  
> language and so permits all kinds of slop.
>
> Cheers,
> -Sean.
>
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