Frank Urbach wrote:
Hi David,
I was digging a little bit in the code of the MicroWorkspace. I saw
that Stef changed the behavior of the execution for the content of
this Workspace by clicking on the button. Every execution is bounded
with the execution of a block. This block forks. So I didn't see the
behavior of stepping in this morph but this would explain why the script
is still running after a halt.
I do not know enough to see why Stef did it in this way.
And after all I guess that the programming environment is not the goal
of the book and BotsInc.
The reason for the fork is simple (though the implementation is not):
Morphic is single threaded, while Stef wanted to allow multiple
independent programs written in straight Smalltalk for the purpose of
his book.
And he wanted to present things like loops and make it relatively
student-proof.
So the approach that he took was to fork each script and arrange for the
UI to be updated from time to time as the individual scripts are running.
-------- Original Message --------
Subject: Re: [Newbies] Stef, BotsInc problem... (24-Jan-2007 5:19)
From: David Mitchell <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
I downloaded the ReadyPC image from the SCGSmallWiki site and I am able
to repeat the problem.
I think it is something wrong with the Bot Workspace. I am able to
repeat your bug if I click the Do It or Do It All buttons in the Bot
Workspace.
The good news is you can workaround the problem (by not using the
buttons). Instead, press Alt+D or (Command+D on Mac) to invoke the do it
command. This is what I normally do and explains why I didn't notice the
problem when working through the book.
The Bot Workspace was added for the book. I bet the buttons worked at
one point and a code change broke them. Went unnoticed because a lot of
Squeakers already use the right-click context menus or the keyboard
shortcuts.
I'm running windows. Can someone test on Mac and/or Linux?
I downloaded the ReadyPC image from
Blake wrote:
On Mon, 22 Jan 2007 19:19:55 -0800, David Mitchell
<[EMAIL PROTECTED]> wrote:
That's true enough, but the stack you are debugging shouldn't continue.
Unfortunately, I can't think what might be wrong. I've gone through
Bots Inc without hitting this one.
I haven't had a chance to try this out but if it doesn't
work...reinstall?
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--
Ned Konz
[EMAIL PROTECTED]
http://bike-nomad.com
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