Let's move on from text-representation of behaviour! (was:
Unstable Squeak - still too unstable)
stéphane ducasse
ducasse at iam.unibe.ch
Mon Sep 27 20:07:54 UTC 2004
But mark
You have to look at Monticello :). The idea is that a category is a
package then you have to mark class extension using *mycategory
then you can publish a package on a ftp, disk, http server and this is
really cool. Because you get all your code away from an image in a save
and
reproduceable environment. I can send you the extremely limited doc I
started to do for my students. (but this is really limited 3 pages).
Shout is really cool.
Squeaksource is just a repository, go a create an account for your
package
go to www.squeaksource.com
create an account and a project (after once you have created a
Squeakmap account) you can publish on SM with on click :)
Stef
On 27 sept. 04, at 20:39, Mark Guzdial wrote:
> Hi Stephane,
>
> No, we haven't. I'm finding it challenging to figure out all the new
> tools. For example, last week, I was intrigued by the discussion of
> Shout and wondered what it was. I searched the Squeak Swiki, then the
> mailing list archives, and finally Googled that it was a syntax
> highlighter. The new tools do sound very interesting (thank you, all,
> for the explanation of the new functionality being proposed wrt
> .sources and .changes) and we will consider adding the new tools to
> our course as we can.
>
> Best wishes,
> Mark
>
> On Sep 27, 2004, at 2:03 PM, stéphane ducasse wrote:
>
>> Hi Mark
>>
>> do you ask them to use Monticello because if they learn to publish
>> regularly on their disk but also on a place such as
>> www.squeaksource.com then you may have a better chance to teach them
>> a bit of software engineering practices (building, reproducability
>> of compositing an application out of components....)
>>
>> I will start a lecture here and we will use: shout, refactoring
>> browser, monticello and squeaksource and I will
>> ask them to regularly throw away their image and rebuild it from
>> scratch.
>>
>> Stef
>>
>>
>>
>>> I'm sorry that I missed the beginning of this thread, to better
>>> understand WHY we would want to do away with the .changes file. I
>>> do know how much we'd miss the .changes file here.
>>>
>>> Novices break Squeak, at a pretty deep level. We have at least 75
>>> students who take our second-year undergraduate required course EACH
>>> SEMESTER, and several of those do corrupt their images. (We
>>> recently had a case of a Ph.D. student here corrupting his image so
>>> deeply that it couldn't be saved, and we had to go bit-spelunking to
>>> retrieve code that he desperately needed from workspaces!) With the
>>> .changes file, these corruptions are no more than a minor annoyance
>>> -- you recollect your code from .changes, and plug it all into a new
>>> image. Without a .changes file, a crashed and corrupt image means
>>> restarting one's project. Since Murphy's Law requires that all such
>>> errors must occur 12 hours before the homework deadline, the
>>> .changes file is absolutely critical to our students.
>>>
>>> Mark
>>>
>>> On Sep 27, 2004, at 9:40 AM, Colin Putney wrote:
>>>
>>>> Quoting Diego Gomez Deck <DiegoGomezDeck at ConsultAr.com>:
>>>>
>>>>> This idea is the base for a lot of changes we need to do:
>>>>>
>>>>> - Store the sources *inside* the image. The string is also an
>>>>> object,
>>>>> isn't it?
>>>>>
>>>>> - Let use a .changes files ONLY to store the changes not present
>>>>> in the
>>>>> image. The .changes has to contains only the modifications made
>>>>> to the
>>>>> image but still not saved. That means, for instance, every time
>>>>> we save
>>>>> the image the .changes goes empty. Note that .changes concept don't
>>>>> implies text-format, the .changes can be a stream of serialized
>>>>> command
>>>>> to impact on the image. For example, all the changes made in the
>>>>> image
>>>>> but in browsers can be saved (like all the changes a normal user
>>>>> can
>>>>> make to an image just using the UI).
>>>>
>>>> Hi Diego,
>>>>
>>>> Actually I've done some work on this already, as part of a new
>>>> packaging system
>>>> for Squeak. The idea is to store behavior as parse nodes in the
>>>> image rather
>>>> than as text on disk. Then the .changes file would become a series
>>>> of
>>>> serialized SystemChangeNotifier events, and would be cleared when
>>>> the image is
>>>> saved. On start up we'd check the .changes file and automatically
>>>> bring up a
>>>> "recently logged changes" browser if it's not empty.
>>>>
>>>> The main trick is to do this without breaking the VersionsBrowser
>>>> or loosing
>>>> method history. I think Avi's Unstable Squeak experiment will help
>>>> in making
>>>> Monticello suitable for tracking source code evolution.
>>>>
>>>> Colin
>>>>
>>>>
>>>>
>>>>
>>>>
>>> __________
>>> Mark Guzdial : Georgia Tech : College of Computing/GVU
>>> Atlanta, GA 30332-0280
>>> Collaborative Software Lab, http://coweb.cc.gatech.edu/csl
>>> http://www.cc.gatech.edu/~mark.guzdial/
>>>
>>>
>>
>>
>>
> __________
> Mark Guzdial : Georgia Tech : College of Computing/GVU
> Atlanta, GA 30332-0280
> Collaborative Software Lab, http://coweb.cc.gatech.edu/csl
> http://www.cc.gatech.edu/~mark.guzdial/
>
>
>
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