[Pharo-dev] a weak on:do:/when:do:

Stéphane Ducasse stephane.ducasse at inria.fr
Wed Aug 28 09:40:44 EDT 2013


The mail was more that I would prefer to have less block inside block and cull:


On Aug 28, 2013, at 1:14 PM, Tudor Girba <tudor at tudorgirba.com> wrote:

> That is what I knew, too. I asked because the mail seemed to suggest that it would work :).
> 
> Doru
> 
> 
> On Wed, Aug 28, 2013 at 12:54 PM, Esteban Lorenzano <estebanlm at gmail.com> wrote:
> no, it is not. 
> that will keep the registry forever because it acts over a block (no ephemerons, remember)
> 
> Esteban
> 
> On Aug 28, 2013, at 11:56 AM, Tudor Girba <tudor at tudorgirba.com> wrote:
> 
>> Does this work?
>> 
>> Doru
>> 
>> 
>> On Wed, Aug 28, 2013 at 11:54 AM, Stéphane Ducasse <stephane.ducasse at inria.fr> wrote:
>> whenListChanged: aBlock
>>         "Specify a block to value after the contents of the list has changed"
>> 
>>         "Basically when you set a new list of items"
>> 
>>         <api: #event>
>>         | block |
>>         block := [ :announcement :ann |
>>         aBlock
>>                 cull: announcement newContents
>>                 cull: announcement oldContents
>>                 cull: announcement
>>                 cull: ann ].
>>         listAnnouncer weak
>>                 when: ValueChanged
>>                 do: block
>> 
>> 
>> 
>> 
>> -- 
>> www.tudorgirba.com
>> 
>> "Every thing has its own flow"
> 
> 
> 
> 
> -- 
> www.tudorgirba.com
> 
> "Every thing has its own flow"

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