"Andy" == Andy Burnett andy.burnett@knowinnovation.com writes:
Andy> Could some kind soul please explain what I am doing wrong here? Andy> I have a model, called Fspace, which I have created several instances of, Andy> whilst I was testing it.
Andy> Fspace allInstances size reports 9 instances.
Andy> When I run
Andy> Fspace allInstancesDo: Andy> [:each | Andy> each := nil. Andy> Transcript show: (each value); cr. Andy> Smalltalk garbageCollect]
Andy> The transcript shows that the values are set to nil. However, the instances Andy> don't go away. So, what am I doing wrong?
Setting "each" to "nil" there does nothing, since you aren't updating the object that was originally in "each".
You need to tell anyone still holding a reference to your objects to let go. Some advice can be found at http://wiki.squeak.org/squeak/2176