Re: [Pharo-dev] Announcer problem :)

Aug. 4, 2013


      So igor is thinking about ephemerons and object formats.
Because we are going over all the weak on:do: and rewriting the ones we can.


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
		on: ValueChanged
		do: block


On Aug 4, 2013, at 4:16 PM, StÃ©phane Ducasse <Stephane.Ducasse@inria.fr> wrote:
...
addDependent: anObject
self announcer 
      on: MorphChanged
      do: [ :ann | anObject update: ann selector ].
self announcer 
      on: MorphChangedWithArguments
      do: [ :ann | anObject update: ann selector with: ann arguments ].
^ anObject
is an example of the problem because addDependent: was holding also weakly its dependent and now
we cannot use weak with blocks.
Stef