[Glass] Weird problem with class instance variable

[Richard Sargent via Glass]

GLASS mailing list wrote
> Hi guys,
> 
> I define a classInstVars: called 'Instances' to keep track of new
> persistent instances in my class FaBackgroundProcess. Of course, I
> implement #new to add those there.
> 
> But I am having a very strange issue now. I have this accessor:
> 
> FaBackgroundProccess class >> instances
> ^ Instances ifNil: [ Instances := OrderedCollection new ]
> If I execute:
> 
> FaBackgroundProcess instances ->>>>>  anOrderedCollection( )
> 
> I get an empty collection (which is what I expect). However, if I inspect
> the class FaBackgroundProcess and see the slot for 'Instances' I see lots
> of instances of FaBackgroundProcess! (when I expect to see same as the
> answer of #instances, that is, empty) And those instances are really alive
> as they prevent GC of other objects.
> 
> So...what is going on????  I attach an screenshot with all the pieces. Any
> help is really welcome since I am lost.

Mariano, one possibility comes to mind. I'm not sure how you could have
created the scenario, but it may be worth checking. See if you have a global
definition of Instances somewhere other than the class variable. If the
method was compiled with a reference to an association in UserGlobals, for
example, you might be playing with two different associations. Browse the
reference paths to the two collections.


> Thanks in advance,
> 
> -- 
> Mariano
> http://marianopeck.wordpress.com
> 
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> 
> 
> Screen Shot 2015-08-25 at 5.02.48 PM.png (432K)
> <http://forum.world.st/attachment/4845738/0/Screen%20Shot%202015-08-25%20at%205.02.48%20PM.png>





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