On 25 May 2013 13:49, St�phane Ducasse <stephane.ducasse@inria.fr> wrote:

Hi guys

this is strange I cannot get rid of Spec based ui instances.
I tried many

LoggerUI allInstances do: [ :each |
       SystemAnnouncer uniqueInstance unsubscribe: each ]

LoggerUI allInstances do: #delete.

Smalltalk garbageCollect

Nothing changes. Each time I create and close it does not get garbage collected.
I remove all the announcement registration from my code but nothing changes.

That's why it is preferable to always use weak subscriptions:

announcer weak on: Foo send: #bar to: theGuyWhoWillBeHeldWeakly

then:
1. you don't have to unsubscribe
2. even if you still have memory leaks, you can exclude announcer from equation

Stef

--
Best regards,
Igor Stasenko.