2014-08-21 9:44 GMT+02:00 phil@highoctane.be <phil@highoctane.be>:

I had a look at dependents.

I see code in Object and Model which looks like quite close.

And also the comment in Model says: Provides a superclass for classes that function as models.  The only behavior provided is fast dependents maintenance, which bypasses the generic DependentsFields mechanism.  1/23/96 sw

Is there a place where I can read more about that and/or can someone provide a quick explanation?

From memory and use of other smalltalks (VisualWorks): Model provides an instance variable for storing dependents (which are then non-weak), Object instances use a global, weak array.

At least, this is how I use them.

I allways have worries about discarding objects with dependencies (Morphs, models) and creating memory leaks that way.

Thierry

 

TIA

Phil

On Thu, Aug 21, 2014 at 9:22 AM, Oscar Nierstrasz <oscar.nierstrasz@gmail.com> wrote:

Right.  I should have realized that.

I was looking for a replacement for:

        Transcript closeAllViews

which has disappeared in Pharo 3.0.  So this seems to work:

        (Transcript dependents select: #isSystemWindow) do: #close

Thanks,
Oscar

On 20 Aug 2014, at 17:59 , Camille Teruel <camille.teruel@gmail.com> wrote:

> Hi Oscar,
>
> It's because Transcript is only one instance of ThreadSafeTranscript.
> 'Transcript open' doesn't create a new instance but opens a new window on that instance.
>
> Camille
>
> On 20 août 2014, at 17:30, Oscar Nierstrasz (gmail) <oscar.nierstrasz@gmail.com> wrote:
>
>>
>> In the latest Pharo 3 for Mac:
>>
>> Transcript open.
>> Transcript open.
>> Transcript class allInstances inspect
>>
>> only shows one instance, not two.
>>
>> Why?
>>
>> Oscar
>>
>
>