[Squeakland] When to define a local variable

[Laurence Rozier]

Hi,
Sorry for the delayed response ... I'm not on a Windows machine at the
moment but have applied available fixes to OpenGL problems which you can
find on the Croquet list. I've not seen the security error you mention.

Laurence
On 5/7/07, Eric Eisaman <eric.eisaman at gmail.com> wrote:
>
> Hello,
>
> You mention Croquet as offering alternatives. I have been trying to run
> Croquet on several different computers but always receive the "Failed to
> Initiate OpenGL" error however, I recently installed the latest OpenGL on
> all my computers. Do you know how to deal with this? Also, I get a security
> error saying my Win32 platform has no good source of entropy. How can I cope
> with this? If you have any advice I would greatly appreciate it.
>
> Eric Eisaman
>
>
> On 4/1/07, Laurence Rozier <laurence.rozier at gmail.com> wrote:
>
> >
> > On 3/31/07, Young-Jin Lee < youngjin.michael at gmail.com> wrote:
> > >
> > > Hi,
> > >
> > > I am a newbie trying to learn Squeak.
> > > The squeak book and tutorials says that I need to define a local
> > > variable using a pipe like below:
> > >
> > > | someMuppet |
> > > someMuppet := Muppet new.
> > > someMuppet name: 'Elmo'.
> > > someMuppet greet.
> > >
> > > But when I tried the same code without defining a local variable shown
> > >
> > > below, I got the expected results, which makes me wonder when I should
> > > define a local variable.
> > >
> > > anotherMuppet := Muppet new.
> > > anotherMuppet name: 'Gookie Monster'.
> > > anotherMuppet greet.
> > >
> > > My guess is that I need not define a local variable if my code is
> > > being executed within a Workspace because all variables such as
> > > anotherMuppet will have "Workspace" scope.
> >
> >
> > On the surface this is correct, but the language has no explicit notion
> > of "Workspace" scope. If you take a look at the comment in the Class
> > Workspace you can get a sense of how Workspaces end up with this and other
> > interesting/useful behavior as a result of having the ide written in the
> > language.  Smalltalk/Squeak is more than the grammar, it is an environment -
> > the whole is greater than the sum of the parts. Often we do type source code
> > into text editors as with other languages but eToys, Connectors, Croquetand other tools offer alternatives. Depending on what language background
> > you're coming from this may be a subtle but very liberating observation. You
> > may not need to dig into this but if it seems interesting to you, as you use
> > different code editing tools in the environment, try your code above or
> > evaluate the word self.
> >
> > Enjoy!
> >
> > Laurence
> >
> > Can anyone please explain in more detail about variable scopes?
> >
> > Thanks in advance.
> > >
> > > Young-Jin Lee
> > > _______________________________________________
> > > Squeakland mailing list
> > > Squeakland at squeakland.org
> > > http://squeakland.org/mailman/listinfo/squeakland
> > >
> >
> >
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> >
> >
>
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