Squeak-dev July 2007

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140 participants
214 discussions

[ANN] Slowly testing Nile in the image
by Damien Cassou 28 Jul '07

28 Jul '07

Hi, I've started replacing the Stream hierarchy by Nile, a complete reimplementation based on traits. The process I'm following is: 1) change SequenceableCollection>>readStream from: readStream ^ ReadStream on: self to: SequenceableCollection>>readStream ^ self nsReadStream #nsReadStream returns a Nile stream. 2) then, rewrite all methods which contain ... ReadStream on: @Expression... to ... @Expression readStream... To do this, I use ParseTreeRewriter. I have already changed Kernel, KernelTests, Collections, CollectionTests. All the tests passes. -- Damien Cassou

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RE: Message Eating Null - article
by J J 28 Jul '07

28 Jul '07

> Date: Wed, 25 Jul 2007 16:58:49 +0100> From: keith_hodges(a)yahoo.co.uk> To: squeak-dev(a)lists.squeakfoundation.org> Subject: Message Eating Null - article> > To contrast this, how then would you have to code it if nil has the > "exception throwing" behavior? You would do> it similar to this:> > | tmp |> tmp := person office.> tmp notNil ifTrue: [tmp := tmp phone].> tmp notNil ifTrue: [tmp := tmp lastNumberDialed].> tmp notNil ifTrue: [lastNumber := tmp asString].> widget setStringValue: lastNumber.> > Yuck...all those explicit tests for nil are really ugly! Of course, you > could have instead wrapped the original code> in an exception handler, and thus avoided the nil tests, something like > as follows:> > [lastNumber := person office phone lastNumberDialed asString.> widget setStringValue: lastNumber]> on: Object messageNotUnderstoodSignal do: [].> > This looks a bit simpler than the previous example, but even this > example contrasts poorly to the first example.> The first example of these three is much simpler! You just "do it", > without worrying about exceptions, exception> handlers, or explicit tests.Yuck, I wouldn't do either of those. I would do:widget setStringValue: #(office phone lastNumberDialed asString) inject: person into: [:obj :sel| o == nil ifTrue: [ nil ] ifFalse: [ obj sel ] ] _________________________________________________________________ Local listings, incredible imagery, and driving directions - all in one place! Find it! http://maps.live.com/?wip=69&FORM=MGAC01

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What is the meaning of numArgs
by nicolas cellier 28 Jul '07

28 Jul '07

"i can understand valid selectors:" "Unary:" #yourself numArgs = 0. "Binary:" #'**' numArgs = 1. "Keywords" #at: numArgs = 1. #at:put: numArgs = 2. "But does anyone knows what the following cases are meaning?" #'a:b:c' numArgs = 1. #'a::bc' numArgs = 1. #':abc:' numArgs = 0. #'::abc' numArgs = -1. #':abc' numArgs = -2. #':::' numArgs. "make your guess here" "Nicolas"

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[help] How can I get a current copy of the smallland image
by Jerome Peace 27 Jul '07

27 Jul '07

Hi Germán, Thanks for your reply. Can you say more about the status of the small_land project? If it is stopped how are you getting your needs met? Yours in curiosity and service, --Jerome Peace *** >Germán Arduino garduino at gmail.com >Fri Jul 27 11:39:14 UTC 2007 > >Unfortunately the project is almost stopped. > >But you can find all the work done here: >http://swiki.agro.uba.ar/small_land/ > >Cheers. > > >2007/7/23, Jerome Peace <peace_the_dreamer at yahoo.com>: >> >> Hi all, >> >> What is the best way to get a current image for >> smallland? >> >> And what is needed in general to keep up with >> smallland progress? >> *** ____________________________________________________________________________________ Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos & more. http://mobile.yahoo.com/go?refer=1GNXIC

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[ANN][Monticello2] First usable version
by Damien Cassou 27 Jul '07

27 Jul '07

As you may know, I'm working on Monticello2 to make it usable. Recently, I posted on the Summer of Squeak blog: http://blog.summer.squeak.org/2007/07/omnibrowser-based-ui-for-monticello2.…. On this post, you can find a link to a screencast showing how to use the Monticello2 browser I've developed. I have enhanced the version presented on the screencast and publish on the Universe. If you want to play with Monticello2, please load the package Monticello2 in the 'Group Development' category of the Universe. Take care, sometimes you will have to click in a list pane to refresh the browser (when you add a repository to a slice for the first time for example). The button 'Include' is a kind of 'Merge' (I guess), but 'include' is the term used by Avi and Colin in the model so I didn't change it. Please give me as much comment as possible. -- Damien Cassou

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Google SOC HTML Viewer Progress
by Todd Blanchard 27 Jul '07

27 Jul '07

Jerome is making great progress on CSS box model layout. He is very close to passing Acid1. Check out his blog entry. http://jeromechauveau.free.fr/blogsoc/?p=18 -Todd Blanchard

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Asking again
by Hilaire Fernandes 27 Jul '07

27 Jul '07

So, are there any reason the download link at the top right should not point to the squeak-dev regularly-updated and useful-for-developer image? After all, if we want the Squeak community to grow with developer, we also want to make Squeak more appealing for developer, don't you? Or are there any reason to not do so? And for educative use, people should just be pointed to SqueakLand, right? Hilaire

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[help] How can I get a current copy of the smallland image
by Jerome Peace 27 Jul '07

27 Jul '07

Hi all, What is the best way to get a current image for smallland? And what is needed in general to keep up with smallland progress? ---------------- Background: If you are following the progress of 3.10 you will see that it has hit a hitch due to fonts and font tests. See: 0005309: [Bug][Fix] Under certain conditions returning from a MVC project will hang indefinitely. http://bugs.squeak.org/view.php?id=5309 and follow the references from there. The meta problem comes from the history. 3.9 included both 3.8 updates and smallland updates. There were, of course, no resources to check or reconcile the two. A bug was found. A serious bug. I made an attempt to contact the codes author (no response). I fixed things using the bugs code as a guide. And I wrote a test to prove the fix worked. Of course with no understanding of fonts and only broken code to look at the patch was way off the mark. The test was a good one because it helped cause nothing but problems until Ralph had to give it a good look. And pull Andreas into the problem. Andreas's knowledge was enough to show us less knowledgable the error of our ways. And he suggested a fix. But didn't 3.8 and oplc also have the problem? The original bug was from their coders. So I have looked at a recent oplc image and the offending method had indeed been fixed. So now I am curious, how did smallland avoid the problem? Unspoken is the meta-problem: How do we reconcile and use the fixes from the branches and forks of squeak? Thank you for your help. Yours in curiousity and service, --Jerome Peace ____________________________________________________________________________________ Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out. http://answers.yahoo.com/dir/?link=list&sid=396545469

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Re: Linux install - dumb questions
by Bill Schwab 27 Jul '07

27 Jul '07

Thanks for the prompt replies. They have helped some already, and will likely help more as I continue to digest the content. Subbu mentioned packages. I am not above that, but want to be able to do a good job of installing the latest. If I can turn the archives into packages and load them, that would be fine by me. Any pointers? I am not in any rush. This is all part of a gradual move away from dependence on Windows. Whether or not I exercise the resulting options is a separate line of thought. For now, I am simply doing my homework with Linux (typing this into Firefox on Ubuntu) and Smalltalks thereon. To be intellectually honest, I have to think about how I would do everything w/o running back to Redmond when the going gets tough. That includes installing hot fixes to any development systems I might use. Bill Wilhelm K. Schwab, Ph.D. University of Florida Department of Anesthesiology PO Box 100254 Gainesville, FL 32610-0254 Email: bschwab(a)anest.ufl.edu Tel: (352) 846-1285 FAX: (352) 392-7029

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A couple of simple ergonomic adjustments
by Sebastian Sastre 27 Jul '07

27 Jul '07

Hi there, I wanted to share a couple of simple and cheap customizations I've made on my daily Squeak image that I feel improves (phisical) ergonomy. I suggest those guys that make that customized images take a look and ofcourse the official Squeak to see if, triviality aside, this is cool enough. To install, 1) evaluate in a workspace the code in Preferences.text attached file and 2) install the ListItemColorPreferences.1.cs changeset file. The changeset with 2 method modifications that make the lists use the preferences instead of harcoded colors for highlighting. The preferences code is in the other attached file. Criteria was: minimalism, a better Fitts law score and better contrast. Minimalism. No splitter handlers and pollute the windows with scrolls only when rigorously necessary. Fitts. Make the scrolls wider to reduce the time aiming the pointer device (mouse or whatever) before the click. Contrast. Take care on contrast making it better for items selected in a list. I encourage to use better contrast for highlighting in selected list items. Try to read from 1 meter of the screen with the default red over lightgray (low contrast) and then customize it to a better contrasted version. I liked the readability of cyan over dark blue but is so different from the main theme that I choosed a not that radical one (like the one I've put in the preferences file). As developers parsing the low contrast symbols hundred of times a day ofen for hours at that low contrast can wastely "raise the temp of our graphic cards", this is, unecessary visual stress. Who knows.. everything to save a couple of headaches :) all the best, Sebastian Sastre PD: when I had some more time for this I plan to make a preference of opening menues and submenues with a click (like it is now) or only with a mouse over. This can save hundreds of clicks a week and so the clicker finger join.

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