On Tue 4. Apr 2017 at 19:05, Levente Uzonyi <leves at caesar.elte.hu> wrote:

> On Tue, 4 Apr 2017, Eliot Miranda wrote:
>
> >
> >
> > On Apr 4, 2017, at 7:02 AM, Bert Freudenberg <bert at freudenbergs.de>
> wrote:
> >
> >       On Tue, Apr 4, 2017 at 3:47 PM, Eliot Miranda <
> eliot.miranda at gmail.com> wrote:
> >             Hi Levente,
> >
> >             > On Apr 3, 2017, at 11:14 AM, Levente Uzonyi <
> leves at caesar.elte.hu> wrote:
> >             >
> >             >  The correct solution is:
> >             >
> >             > Array streamContents: [ :stream |
> >             >    Smalltalk globals associationsDo: [ :binding |
> >             >        binding class == Global ifTrue: [ stream nextPut:
> binding ] ] ].
> >
> >
> > Or shorter
> >
> >     Smalltalk globals declarations select: #canAssign
> >
> > maybe? Unlike class bindings, global vars are writable.
> >
> >
> > 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.
>
> >
> >
> >       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.
> >
> >
> > 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
>


Yep. Besides, with renaming on import the name of the class is not
necessarily the same as its binding key.

- Bert -


> >
> >
> >       > 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.
> >
> >
> > I thought 'declarations' are the things owned by this environment
> (excluding imports), whereas 'bindings' are the things visible in this
> environment (including imports).
> >
> >
> > Is there a definition in text somewhere?  Colin?
> >
> >       - Bert -
> >
> >
> >
>
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