Squeak-dev May 2007

squeak-dev@lists.squeakfoundation.org

150 participants
233 discussions

Re: error signal
by Alan Knight 07 May '07

07 May '07

The exception can resume, which is the only way the comparison would run. And it might not be resumed with a boolean, thus the = true test. At 10:26 AM 5/7/2007, Damien Cassou wrote: >Hi Norbert, > >2007/5/7, Norbert Hartl <norbert(a)hartl.name>: >> error signal = true >> ifTrue: >> [self reset. >> self logout. >> self reLogin. >> exception restart] >> >>This code comes from VW. Is the signal method implemented >>differently under VW. In squeak the "error signal" itself >>throws the error so there is no ifTrue: evaluation, right? > >Are you sure that 'error' is an instance of Exception or one of its >subclasses? Maybe it's something else. > >Moreover, I don't see the point of 'something = true ifTrue:'. Why >not: 'something ifTrue:'? > >-- >Damien Cassou -- Alan Knight [|], Cincom Smalltalk Development knight(a)acm.org aknight(a)cincom.com http://www.cincom.com/smalltalk "The Static Typing Philosophy: Make it fast. Make it right. Make it run." - Niall Ross

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error signal
by Norbert Hartl 07 May '07

07 May '07

Hi, I found a peace of code I don't understand: It's in the Glorp code. error signal = true ifTrue: [self reset. self logout. self reLogin. exception restart] This code comes from VW. Is the signal method implemented differently under VW. In squeak the "error signal" itself throws the error so there is no ifTrue: evaluation, right? thanks, Norbert

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[ANN] Documentation for Omnibrowser
by Bergel, Alexandre 07 May '07

07 May '07

Dear Squeakers, Our paper on Omnibrowser has been published finally. http://www.iam.unibe.ch/~scg/Archive/Papers/Berg07cOmnibrowser.pdf Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.software-artist.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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[ANN] FreeType Plus release
by Andrew Tween 07 May '07

07 May '07

This is an official announcement that the FreeType Plus packages are now released. You can download from SqueakMap, or via the Package Universe within a developer Squeak (squeak-dev) image. I will be documenting various aspects of this on the wiki; at present you can view some screenshots, and read some preliminary descriptions, at http://wiki.squeak.org/squeak/5984 It will work, to varying degrees, on Windows (98, 2000, XP, & Vista); Linux (OpenSUSE, Fedora, Ubuntu, etc.); and Mac OS X. It requires an FT2Plugin, which is shipped with the Mac VM, and is available for Windows/Linux via the FreeType Plus (plugins installer) package. To enable sub-pixel anti-aliasing, the optional, and separate, FreeType Plus (sub-pixel anti-aliasing) package must be installed. This requires a modified BitBltPlugin. This is currently available for Windows/Linux only, and is installed via the FreeType Plus (plugins installer) package. If anybody wishes to attempt compile it for Macs, then please let me know. Rather than try to describe everything, and anticipate every question in advance, I would rather wait to see how people get on with installing/using it, and then update and improve the documentation accordingly. So, if you have problems, then please let me know; and if you have success then that would be nice to hear about too :) Cheers, Andy

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Towards 3.9.1 . Away from What?
by Jerome Peace 07 May '07

07 May '07

Towards 3.9.1 . Away from What? Hi Keith, Thanks for your reply. > Keith Hodges keith_hodges at yahoo.co.uk > Mon May 7 01:34:35 UTC 2007 > > > > > Towards 3.9.1 . Away from What? > > > > I watch all of Keith's efforts with wonder and some > > trepidation. > > > > > wonder I like! Your welcome. You have earned it. > > He has very bold plans and when kept after (by others) > > may do an reasonable job of coding. > > > > He is also off acting on his own on what he thinks is > > needed. > > > Not really true, someone said 3.10 is about process, > not features. The > 'process' element of 3.10 has had no discussion, > specification or > roadmapping! 3.10 Itself has been progressing under > Edgars 'expert, but > manual' direction, which I have been monitoring and > supporting. Cool. < some stuff clipped here to keep the topic on protocol> > > I see what he is doing as undermining the efforts of > > the 3.10 team. And I wonder why this is. > > > > > Undermining 3.10? I didn't say you were not contributing. I merely stated a personal perception. As simon pointed out the question pertains as much to the perception as to the undermining. <snip> > > Is the November revolution happening in May? > > > > > What november revolution, is there a plan? Sorry. Squeak lore. Search the squeak-dev archives for the folklore. For a while gokr was fond of them. > > When did 3.8.1 come out? Just after 3.9 if I recall. I > might be wrong > about that though. 3.8.1 is a branch owned and maintained by squeakland folk AFAIK. Some changes from it were folded back into 3.9. The point is it has an offical entity that maintains it. > > What he is proposing is creating a branch of Squeak > > under his release control and to his taste. > > > > > Actually I have been talking with Stephane all along > about all sorts of > aspects of this process. Stephane has held back, in > order to let 3.10 > roll. But if he would like to take the opportunity to > help put some > icing on his 3.9 cake then why not. Steph is part of the board. And he is not the whole board. Something offical should be said about your efforts and formalities should be observered if necessary. > > He is appropriating the version number 3.9.1. Which > > portrays an intention for his release to be a > > successor to 3.9 but close to it. > > > > Now I question whether an independent developer of > > relatively short standing in the squeak community > > should have the right to give an official sounding > > designation to his release. > > > > > Question away: the way I see it is I have no more or > less right than > anyone else, until someone objects and it goes > political, or someone > else has a better idea. > > Shouldn't the version numbers of squeak belong to the > > squeak foundation and squeak board? > > In other words it comes close to trademark > > infringement. > > > Read the website it says, "This is the site for > collaborating on the > specification for 3.9.1 (Pending objections, this is > the de-facto 3.9.1, > the future of squeak 3.9)" > > First, please note the word COLLABORATING, its not > about what I want in > 3.9.1. It is and always has been something I have > attempted to > facilitate the community to engage in. The fact that > few others have > actually engaged in it, (and I have invited them) is > not my fault, nor > does it make me a loner at heart, just a loner by > default. > > The "Essential Fixes" page are some of what I need to > support this > process that is used to generate 3.9.1 itself from this > website. > > You may think I am being rather forward in saying "this > is the de-facto > 3.9.1", but this bug fixed version has been sitting on > that website for > 2/3 months now and nothing has been happening to make > it happen. It > needs eaither a) Someone to push it through, to do it > and make it > official, or b) Somone to object and can the idea > altogether so that it > becomes a mini-fork. Yes, Exactly. I left both options open in the > above statement. I > am being more forward now to provike action one way or > the other. > > So far we have a) Stephane and b) Jerome > > Keith has the power to do what he will. But calling > > it 3.9.1 implies a blessing for his actions that he > > has not formally asked for nor formally received. Some > > > I have never called it 3.9.1 without adding a caveat > "proposed" , > "experimental", or "unofficial" > > controls should be put on what he calls it less his > > efforts be taken (by those outside) as authorized and > > encourgaged by the offical board. > > > > Or he should be given that authorization by the board > > to go ahead. Right now the situation is like having a > > loose cannon aboard a ship. And people should look at > > it in that manner. > > > I find that insulting actually. Emails may seem to more insulting than they were intended. My intention is to provoke to board to action so that the status of things become clear. You are not the situation you are Keith. I know the difference. :-) The name and whether it is wise for the community to let you use it is what needs to be tied down. I don't make that judgement. I just point out that one is needed. My perception is clouded by distance and ignorance and I may be wrong about the loose cannon. Still when one percieves something like that it is best to act before its proven correct or not. > > The fact is that I dont have a project I am working on > or any hidden > agenda. I am aiming to serve the squeak community by > developing some > stuff that is needed. > > In general I am an initiating, ideas sort of person, > and I value and > need support from finishing, relentless checking type > of people such as > yourself. > > It would be helpful if those finishing relentless > checking, dotting i's > and crossing t's sort of people contributed to helping > me where I am > weak, rather than shooting me down. It would be helpful if initiating, ideas sort of people slowed down long enough to check and finish what they initiate. Self funded time of others must be used considerately. Thanks for the stimulating reply. Yours in curiosity and service, --Jerome Peace (Bug Tracker) P.S. If your talking to Steph you are deeply involved in the politics. :-) Cheers, -Jer __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Difference of Rectangles
by Jerome Peace 07 May '07

07 May '07

Difference of Rectangles Hi JIm, The following is some workspace code (copy into a workspace. Select and do all of it. Then recolor and move the rectangles around. And select and do the last bit. note: #flipRotated: is new as of 3.9. I don't know how people got along without it. aLessB := [ :a :b | | overlap | overlap := a intersect: b . overlap area = 0 ifTrue: [ a corners ] ifFalse: [ overlap area < a area ifFalse: [ a corners ] ifTrue: [oCorners := overlap corners . verts := OrderedCollection new . a corners withIndexDo: [ :each :eachIndex | ((oCorners at: eachIndex) dist: each) < 1 ifTrue: [ verts addAll: ( oCorners flipRotated: eachIndex negated * 2 + 1) allButLast ] ifFalse: [ verts add: each ] ] . verts ] ] ]. aRect := RectangleMorph new openCenteredInWorld . bRect := RectangleMorph new openCenteredInWorld . poly := PolygonMorph new openCenteredInWorld . polyVerts := aLessB value: aRect bounds value: bRect bounds . poly setVertices: polyVerts; changed . I had done something similar for puzzle pieces. And I had fun working this one out. Yours in curiosity and service, --Jerome Peace > Jim Rosenberg jr at amanue.com > Sun May 6 20:12:03 UTC 2007 > > Consider two rectangles, a and b. The only constraint I > will put on them is > that neither contains the other. I wish to create a > PolygonMorph > programmatically consisting of a merge: b with b > removed but all of a > retained in the case a and b overlap. I think I see my > way to how to do > this, but if anyone knows of any code I can look at > where something like > this is already implemented I'd be much obliged. > > My idea for how to go about this is to use "turtle > logic" more or less as > follows: Start with the first vertex of a merge: b > which is not inside of > b. Proceed clockwise along the bounds of a merge: b; if > you hit b turn > left, if you hit a turn right. But this may be doing > things the hard way. > > -Thanks, Jim ____________________________________________________________________________________ The fish are biting. Get more visitors on your site using Yahoo! Search Marketing. http://searchmarketing.yahoo.com/arp/sponsoredsearch_v2.php

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The Weekly Squeak Summary No. 12: Mar 18 - May 5, 2007
by Michael Haupt 07 May '07

07 May '07

Dear Squeakers, welcome to the The WeeklySqueakSummary, an irregular traffic-dependent report on what's going on in the world of Squeak based on the WeeklySqueak blog. Highlights of the past weeks: Two software "releases" can be celebrated: Croquet 1.0 is there [2], and Plopp [3] is available for free download (a serial number is required, though, for full functionality). The Squeak projects for this year's Google Summer of Code are out [10]. Five projects have been selected, supporting both the more developer-oriented (compiler, package model, and collaborative development) and user-oriented (Wiki, and a HTML/CSS viewer) sides of Squeak. There also are some remarks on comments in Squeak code [11] that are definitely worth reading. Smalltalk Solutions is over, and the Squeak booth at the conference has been a success [14], also regarding fund raising [5]. ESUG 2007 calls for contributions [13]. Finally, there is going to be a meeting of the German Squeak association in Potsdam, Germany, this coming Saturday [9]. You are invited. Yes, you. ;-) The past weeks' news items: [1] SqueakFest '07 at Columbia College Chicago http://weeklysqueak.wordpress.com/2007/03/22/squeakfest-07-at-columbia-coll… [2] Croquet SDK 1.0 released http://weeklysqueak.wordpress.com/2007/03/27/croquet-sdk-10-released/ [3] Plopp, The Cool 3D Painting Tool is now available for download http://weeklysqueak.wordpress.com/2007/03/28/plopp-the-cool-3d-painting-too… [4] OLPC for ME? http://weeklysqueak.wordpress.com/2007/04/01/olpc-for-me/ [5] From the Press Room: Squeak Badge Fund Raiser Campaign http://weeklysqueak.wordpress.com/2007/04/06/from-the-press-room-squeak-bad… [6] From the Press Room: Squeak At 2007 Smalltalk Solutions Conference http://weeklysqueak.wordpress.com/2007/04/06/from-the-press-room-squeak-at-… [7] Thot talks about Squeak, Etoys and V-Toys http://weeklysqueak.wordpress.com/2007/04/11/thot-talks-about-squeak-etoys-… [8] Help improving the Smalltalk experience on the OLPC machine http://weeklysqueak.wordpress.com/2007/04/11/help-improving-the-smalltalk-e… [9] Squeak meeting in Potsdam, Germany http://weeklysqueak.wordpress.com/2007/04/11/squeak-meeting-in-potsdam-germ… [10] Google Summer Of Code - Squeak'n style http://weeklysqueak.wordpress.com/2007/04/16/google-summer-of-code-squeakn-… [11] What's in a Comment? http://weeklysqueak.wordpress.com/2007/04/16/whats-in-a-comment/ [12] Don't Miss Smalltalk Solutions - April 30th - May 2nd 2007 http://weeklysqueak.wordpress.com/2007/04/28/dont-miss-smalltalk-solutions-… [13] ESUG 2007 Call for Contributions http://weeklysqueak.wordpress.com/2007/04/28/esug-2007-call-for-contributio… [14] A report from Squeak's booth @ Smalltalk Solutions 2007 http://weeklysqueak.wordpress.com/2007/05/03/a-report-from-squeaks-booth-sm… You can find this and much more on The WeeklySqueak blog, the newsblog dedicated to the world of Squeak:http://news.squeak.org/ Subscribe to the WeeklySqueak RSS feed: http://news.squeak.org/feed/ Happy squeaking, Michael

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Towards 3.9.1 . Away from What?
by Jerome Peace 07 May '07

07 May '07

Towards 3.9.1 . Away from What? Hi Keith, Thanks for your reply. I've nothing further to add. Yours in curiosity and service, --Jeorme Peace *** > > > It would be helpful if initiating, ideas sort of > > people slowed down long enough to check and finish > > what they initiate. Self funded time of others > > must be used considerately. > > > > > > Appreciated. *** ____________________________________________________________________________________ It's here! Your new message! Get new email alerts with the free Yahoo! Toolbar. http://tools.search.yahoo.com/toolbar/features/mail/

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The OLPC laptop in a Nigerian classroom
by Giovanni Corriga 07 May '07

07 May '07

Hi all, while surfing the web I stumbled upon this picture that I'd like to share with you: http://news.com.com/2300-1041_3-6175025-4.html?tag=ne.gall.pg Kudos to all the OLPC hackers, thinkers and revolutionaries. Giovanni

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Towards 3.9.1 What's going on here?
by Jerome Peace 06 May '07

06 May '07

Towards 3.9.1 What's going on here? Hi Edgar. How long does it take you to do one iteration of a release? How often did you run into situations where you had to redo a release? Of these what percent were due to problems in creating the release? And what percent were due to problems with the submitted fixes not working correctly once they were in the release? How long after doing a release step did it take for you to become aware of these problems? (Answer a range of times shortest and longest) *** > Edgar J. De Cleene edgardec2001 at yahoo.com.ar > Sun May 6 20:14:26 UTC 2007 > > > El 5/6/07 4:18 PM, "Jerome Peace" <peace_the_dreamer at > yahoo.com> escribió: > > >2) Is there a simple and faster way to do release > steps? > I always said what old style change sets, but is not > what we agree use on > 3.10. > Steph said what is the only way what all could discover > shortcomings in > Monticello. > So the release team has chosen to both be responsible for the release and a test bed for Monticello limitations? Ouch. > One more time, in Mantis I have fixes/enhancements what > could go into 3.10 > via cs but no via Monticello. Fixes to both changesets and Monticello so that they can interoperate are of the utmost priority. Especially since release teams are being saddled with the extra burden of doing everything through Monticello. > > No need of a complete release for solve this. > Only what need is take 3.10, modify Installer mantis > createRBforBug: 6089 You lost me here. What code do I need to look at to follow what you are saying? And once you get the fixes in you could then save monticello package(s) that encapsulate the sequence of changes you made with changeset? Or would that be impossible? > > When have a .mcz with the change what 3.10 could load > via Monticello > Browser, I do a motion for give a medal to winner. Bronze star or Purple heart? :-) Yours in curiosity and service, --Jerome Peace P.S. As always thanks for keeping it fun. -Jer ____________________________________________________________________________________ The fish are biting. Get more visitors on your site using Yahoo! Search Marketing. http://searchmarketing.yahoo.com/arp/sponsoredsearch_v2.php

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