On Tue, 4 Apr 2017, Eliot Miranda wrote:

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> On Apr 4, 2017, at 7:02 AM, Bert Freudenberg <bert@freudenbergs.de> wrote:
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>       On Tue, Apr 4, 2017 at 3:47 PM, Eliot Miranda <eliot.miranda@gmail.com> wrote:
>             Hi Levente,
>
>             > On Apr 3, 2017, at 11:14 AM, Levente Uzonyi <leves@caesar.elte.hu> wrote:
>             >
>             >  The correct solution is:
>             >
>             > Array streamContents: [ :stream |
>             >    Smalltalk globals associationsDo: [ :binding |
>             >        binding class == Global ifTrue: [ stream nextPut: binding ] ] ].
>
>
> Or shorter 
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>     Smalltalk globals declarations select: #canAssign
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> maybe? Unlike class bindings, global vars are writable.
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>
> I don't like this.  I see writability as orthogonal.  I'm sure there's good uses for read-only globals that are not classes.  I like the tenseness though.  So
>     Smalltalk globals declarations reject: #isClassBinding
>
> with
> isClassBinding ^value isBehavior and: [key == value name]

Why not just ^true?
It's a ClassBinding even if it's not initialized properly. And that should
be the Environment's responibility.

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>        
>       Why not
>
>       Array streamContents: [ :stream |
>          Smalltalk globals associationsDo: [ :binding |
>              (binding class == Global
>              and: [ binding value isBehavior
>              and: [ binding key == binding value name ] ]) ifTrue:
>                   [ stream nextPut: binding ] ] ].
>
>
> Because we want to know the global *variables*, that is everything *but* the class bindings. So we look for instances of Global, not ClassBinding, no matter the value.
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> Forgive me; I missed a not in there.  But my point is that the classes in global are in bindings whose keys are == to their name.  Everything else is a global variable.

We have separate subclasses: ClassBinding and Global. We should use those.

Levente

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>       > The role of declarations and bindings is still not clear in Environments, therefore, as I wrote it before, unrelated to tool support, I still consider Environments to be incomplete.
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> I thought 'declarations' are the things owned by this environment (excluding imports), whereas 'bindings' are the things visible in this environment (including imports).
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> Is there a definition in text somewhere?  Colin?
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>       - Bert -
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>
>