[GemStone-Smalltalk] Variables and block closure

[James Foster via GemStone-Smalltalk]

The simple reproducible case is as follows:

| a |
[ | b |
a := [a].
b := [b].
a value -> b value.
] value.	"anExecBlock0->nil"

By the way, 3.3 is expected to be released this year, but nothing much more specific is available.


> On Mar 17, 2015, at 12:02 PM, Pierre CHANSON <chans.pierre at gmail.com <mailto:chans.pierre at gmail.com>> wrote:
> 
> Thanks James,
> 
> ok I am working on an older version, not even the last one. So here is a very good reason I should upgrade to the last version as soon as it is released. That will be some work.
> 
> by the way my previous code example did not had any sense. This is the good one (if someone read it) and it is the same problem:
> 
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> [| traversal array result| 
> traversal := nil.
> result := OrderedCollection new.
> traversal := [ :a :r | 
>     |rtemp| 
>     a do: [ :e | (e isArray) ifTrue: [ rtemp := OrderedCollection new. r add: rtemp. traversal value: e value: rtemp] ifFalse: [ r add: e asString ] ] ].
> array :=  Array with: (Array with: 1 with: 4) with: #ok with: (Array with: #henry).
> traversal value: array value: result.
> result.
> ] on: Error do: [:evt | evt asString]
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> 
> Cheers,
> 
> Pierre
> 
> 2015-03-17 15:52 GMT-03:00 James Foster <james.foster at gemtalksystems.com <mailto:james.foster at gemtalksystems.com>>:
> There are some bugs in the way blocks handle variables in GemStone/S 64-bit 3.2.x (and possibly earlier; you don’t mention your version) that will be fixed in 3.3 (but probably not before; this is described internally with bug #45059).
> 
> James
> 
> > On Mar 17, 2015, at 11:17 AM, Pierre CHANSON via GemStone-Smalltalk <gemstone-smalltalk at lists.gemtalksystems.com <mailto:gemstone-smalltalk at lists.gemtalksystems.com>> wrote:
> >
> > Hi everyone,
> >
> > I wonder why is that two expressions are not evaluated similarly by Gemstone, but they are by Pharo ?
> >
> > The second one is the one I would like to be working like the first one is, in Gemstone.
> >
> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> > [ | traversal array|
> > traversal := [ :a | a do: [ :e | (e isArray) ifTrue: [ traversal value: e ] ifFalse: [ e asString ] ] ].
> > array := Array with: (Array with: 1 with: 4) with: #ok with: (Array with: #henry).
> > traversal value: array.
> > ] on: Error do: [:evt | evt asString]
> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> >
> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> > | traversal array|
> > [ traversal := [ :a | a do: [ :e | (e isArray) ifTrue: [ traversal value: e ] ifFalse: [ e asString ] ] ].
> > array := Array with: (Array with: 1 with: 4) with: #ok with: (Array with: #henry).
> > traversal value: array.
> > ] on: Error do: [:evt | evt asString]
> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> >
> > Thank you,
> >
> > Pierre
> >
> > _______________________________________________
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> > GemStone-Smalltalk at lists.gemtalksystems.com <mailto:GemStone-Smalltalk at lists.gemtalksystems.com>
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> 
> 

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