Squeak-dev February 2007

squeak-dev@lists.squeakfoundation.org

161 participants
240 discussions

Enhancing squeak base classes
by Damien Cassou 10 Mar '07

10 Mar '07

Hi, I'm currently working on documenting, testing and bug fixing squeak base classes. http://www.squeaksource.com/SqueakBaseClasses.html I already wrote a lot of tests for the compiler, the integer class, the collections... If you want to help, the repository can be accessed by everyone. We may use this repository as a place to store fixes and their tests. If you know of a bug with its tests and its fix, please commit or tell me. I don't know if this work will be included in 3.10 but I hope so. Please join -- Damien Cassou

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Very strange bug on Streams and probably compiler
by Damien Cassou 07 Mar '07

07 Mar '07

Execute the following piece of code: "-------------------------------------------------------------------" |stream stream2| stream := WriteStream with: 'a test '. stream reset. stream nextPutAll: 'to test'. self assert: [stream contents = 'to test']. "On the following line, you can remove 'copy'" "the problem is present without. It's here to prevent" " the streams from using the same collection" "because the compiler tries to avoid creating 2 identical" "strings" stream2 := WriteStream with: 'a test ' copy. stream2 nextPutAll: 'to test'. "This assert passes but this is abnormal" self assert: [stream2 contents = 'to testto test']. "This assert pass and this is abnormal too" "because the strings MUST be equal !!" self assert: [stream2 contents ~= 'a test to test'] "-------------------------------------------------------------------" On my image, all the 3 tests pass. This is completely abnormal in my opinion. In the second test, where does 'to testto test' come from ??? VM: Squeak VM version: 3.9-8 #2 Tue Oct 10 21:41:34 PDT 2006 gcc 4.0.1 Built from: Squeak3.9alpha of 4 July 2005 [latest update: #7021] Build host: Darwin margaux 8.8.0 Darwin Kernel Version 8.8.0: Fri Sep 8 17:18:57 PDT 2006; root:xnu-792.12.6.obj~1/RELEASE_PPC Power Macintosh powerpc default plugin location: /usr/local/lib/squeak/3.9-8/*.so Image: squeak-dev-76 I will try with other images and the new compiler and let you know. Can you test with your system please and let us know? Bye -- Damien Cassou

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Access to wiki.squeak.org : there are problems while using proxy
by Michael Nedzelsky 07 Mar '07

07 Mar '07

Hi, I am behind a firewall and I get the following for http://wiki.squeak.org --------------------------------------------------------------------------------------------------------------------------- Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /. Reason: Error reading from remote server --------------------------------------------------------------------------------------------------------------------------- Regards, Michael Nedzelsky

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"Inteligent" Shrink?
by Giuseppe Luigi Punzi 06 Mar '07

06 Mar '07

Imagine this. You select one or various categories and "Intelligent Shrink" browse all the image searching all the objects thath the selected categories uses. If a categorie is not use or not will use it for our selected categories then erase it. Example: I create a "set" of objects, and use objects from Kernel, Morphic etc.. But no object uses Monticello. Then, "Intelligent Shrink" may delete all Monticello's class not used. Is this possible on Squeak? Cheers. -- Giuseppe Luigi Punzi - Consultor :: ZYO Consulting :: email: glpunzi(a)zyoconsulting.com tlfno: +34 675 145 912 web: http://www.zyoconsulting.co

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Way of indicating an error
by Damien Cassou 06 Mar '07

06 Mar '07

Hi, if a method should compute and return a value. If this method detects an error in its process what is the best way to indicate it: - returning nil instead of the computed value - raise a specific error Bye -- Damien Cassou

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PositionnableStream>>peekFor: not standard
by Damien Cassou 06 Mar '07

06 Mar '07

Hi, the method PositionnableStream>>peekFor: does not conform to ANSI. In fact, this method should just test the following element in the stream and verify if it equals the parameter. However, the squeak version go forward in the stream if the objects equals. The comment in squeak is clear about this. So, do we choose to conform to ansi or to keep compatibility ? If I'm implementing a new stream hierarchy that may replace the current one, do I need to keep compatibility or be standard ? Bye -- Damien Cassou

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Re: election details *PLEASE READ*
by Todd Blanchard 05 Mar '07

05 Mar '07

On Feb 20, 2007, at 11:57 PM, Alan Lovejoy wrote: > Your comment made me think of the difference in attitude between > French > speakers and English Speakers. I don't find this analogy particularly compelling. I don't think people are really trying to keep Smalltalk 'pure'. I think they're trying to find ways to improve it. Lots of things have been tried - multiple inheritance, prototype based vs class based models, access control wrappers, etc... The cool thing is you can make it what you want already. The trick is getting your nifty thing adopted into the standard package. > Other programming languages have been stealing from Smalltalk for > decades. > It's time we returned the favor. I'm in favor of that - but honestly, there hasn't been a lot worth stealing from the mainstream. I have been looking at erlang recently and find some of the parallel/ process/queue constructs interesting and would love to try to bring some of that over and try building a high performance web server based on those patterns. And then, of course, there are interesting technologies that have nothing to do with the language but would make a great addition to the platform. Like Supple http://www.cs.washington.edu/ai/supple/ - a really nifty demo I saw last year. So there is lots of great stuff to steal - but not much of it from the mainstream languages - they mostly seem to ape the last generation and then take a little lunge in the direction of Smalltalk. -Todd Blanchard

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2 references to class with the same name
by Brad Fuller 05 Mar '07

05 Mar '07

I searched for the answer to this, but mostly found how to deal with instances and obsolete classes. Somehow, I ended up with 2 two classes with the same name, and the class is not obsolete. If I look at the hierarchy of it's (their) superclass (PRStructuresWidget) there are two classes shown: PRSearchWidget #('searchText' 'items') PRSearchWidget #('searchText') PRSearchWidget #('searchText' 'items') is the current "real" class. Somehow PRSearchWidget #('searchText') got in there, which I don't want. I don't know how to get rid of it. Anyone point me to the right documentation on this? Maybe if I file out the current one, then remove the class? thanks, brad -- brad fuller www.bradfuller.com +1 (408) 799-6124

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How to store live objects in Monticello?
by Milan Zimmermann 04 Mar '07

04 Mar '07

Hi, I am trying to do something like this: I have a class LoadProjectTest that is essentially a singleton and the LoadProjectTest class is in category eToys-Tests. I'd like to do something like this: In the image where this class originates, I am creating the instance, and setting one instance variable with some value from a local file. I'd like the instance to be stored in Monticello, when I "save" the category. Then, when the MCZ is loaded into another image, the instance would be there, filled with the value as created in the originating image. However, when I load the MCZ into another image, the instance is null; although I was assuming otherwise, that makes sense as the Monticello repository stores code not live objects. Is it possible to, somehow, to make Monticello to keep the instance, so it is deserialized from the MCZ when the MCZ is loaded into the target image? Thanks Milan

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[OT] Help with Apple Smalltalk 0.4
by Eric Scharff 03 Mar '07

03 Mar '07

This isn't strictly Squeak related, but I wanted to play with the Smalltalk-80 implementation that spawned Squeak in the first place. I recently dug through my archives, and found original floppies for the 4 800K floppies that Apple Smalltalk 0.4 ships with. Unfortunately, I do not have Mac that still has a working floppy drive! I'm reluctant to part with the floppies, but if someone would be willing to transfer these floppies to disk images, so I could use them in an emulator, I would be happy to mail you the disks. Or, if someone might have this version of smalltalk lying around and would be willing to share (as I said, i can prove I have the original disks) that would also be greatly appreciated. BTW: Is this the version of Smalltalk-80 that Squeak central used for bootstrapping the Smalltalk-to-C translator and the Squeak virtual machine? TIA, -Eric ____________________________________________________________________________________ No need to miss a message. Get email on-the-go with Yahoo! Mail for Mobile. Get started. http://mobile.yahoo.com/mail

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