[Gambas-user] IsObject(NULL)

[Demosthenes Koptsis]

On Wed, 2010-11-24 at 21:57 +1030, Bruce Bruen wrote: 
> I really don't see a problem here.  
> Directly from the help:
> "IsObject 
> Returns TRUE if the vRef is an object or a null reference.
> IsObject(NULL) doesn't refer to the NULL constant being an object, it is 
> answering correctly that a vRef=NULL is a null reference!
> 

ok, may be Bruce is right here,

NULL can be a reference to a NULL object but also a Variant or a Dynamic
array or anything with a NULL reference.

So IsObject() cannot determine the reference to object but to a NULL
reference.

i was just thinking if there is a way the IsObject() can be more
accurate if something is NULL object or anything else.

I was thinking
if it was a NULL object, ok it is an object
If it was anything else NULL, is not an object

for example

DIM aStrings AS String[] 'is a null object
PRINT IsObject(aStrings) 'True

DIM v AS Variant = NULL
PRINT IsObject(v) 'here i expected false

i tried to determine this difference with TypeOf

DIM aStrings AS String[] 'is a null object
PRINT TypeOf(aStrings)  'but i get 15 NULL value

DIM v AS Variant = NULL
PRINT TypeOf(v)         'again 15 NULL value instead 11

so i think there is no way to make difference of objects or anything
else if they are NULL.


-- 
Regards,
Demosthenes