Beginners February 2008

beginners@lists.squeakfoundation.org

56 participants
54 discussions

More Morphic Fun
by Jeffrey Straszheim 20 Feb '08

20 Feb '08

I want to create a container -- a panel -- that will contain other Morphs, but within which I can drag the morphs around. If the more were dragged out from the container it should be deleted. What is the most straightforward way to do this? Drag and drop? -- Jeffrey Straszheim http://straszheim.50megs.com

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How to empty a collection?
by itsme213 20 Feb '08

20 Feb '08

I want to clear its contents (size goes back to zero), and can't seem to find something like #clear or #empty. Cannot use a new collection as there are shared references to it. Thanks - Sophie

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[Election 2008] Nominations soon ended - presentations and Q&A coming up!
by goran＠krampe.se 19 Feb '08

19 Feb '08

Hi all! Ok, we have 11 candidates so far! Perfect. Now the first phase - Nominations - ends on the 22nd and then the campaigning period starts: 22nd to 25th: Candidates present themselves and their candidacy, preferrably by posting an article on SqP: http://people.squeakfoundation.org During this period I also urge you to look at the 10 questions we have cooked up for the candidates at: http://wiki.squeak.org/squeak/6029 ...and if you feel some important question is missing - email me in private and I will (if I think it is a good thing) put it in the last 5 "open slots". First 5 served, then it is full! Deadline for sending me extra questions is the 24th. 25th to 29th: Candidates will answer (or not!) the questions by posting to squeak-dev. Feel free to discuss at length of course, the posts from the candidates will be added by me to the Swiki page so that all answers can be seen in one place. As always, election details are at: http://wiki.squeak.org/squeak/6025 regards, Göran PS. IMPORTANT: In order to vote - be sure to confirm that you have an account on people.squeakfoundation.org and that your email address is up to date. If you are not already registered on the site do so as soon as possible. Include information about your participation in the Squeak community to aid everyone in determining your appropriate certification. If you have misplaced your people.squeakfoundation.org password there is a link on the login page to allow you to reset it. When the voting period starts all voters will receive an email with instructions and a link to the voting website.

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Re: [Squeak 0006937]: removeAll: aCollection doesn't do what we expect if aCollection==self
by Klaus D. Witzel 19 Feb '08

19 Feb '08

Hi nicolas, in your "counter" example you have forgotten that this bug is about failure of removal, but your example does not fail, instead it removes all elements (in Squeak 3.9, where MappedCollection still exists). Can you tell us why? And please only add code to bug reports which does what you claim; things which don't work can be discussed here :) /Klaus On Tue, 19 Feb 2008 21:28:25 +0100 a NOTE has been added to this issue: > ====================================================================== > http://bugs.squeak.org/view.php?id=6937 > ====================================================================== > Reported By: cdrick > Assigned To: > ====================================================================== > Project: Squeak > Issue ID: 6937 > Category: Collections > Reproducibility: always > Severity: minor > Priority: normal > Status: new > ====================================================================== > Date Submitted: 02-19-2008 18:12 UTC > Last Modified: 02-19-2008 20:28 UTC > ====================================================================== > Summary: removeAll: aCollection doesn't do what we > expect if > aCollection==self > Description: > This known error has had a revival originating from a mail of Sophie in > the > beginnner list... and I ended up opening a bug report... > > The problem is: > > col := #(1 2 3) asOrderedCollection. > col removeAll: col. > ^col returns an OrderedCollection(2) instead of an empty one as we > would > expect... > ====================================================================== > > ---------------------------------------------------------------------- > kwl - 02-19-08 18:51 > ---------------------------------------------------------------------- > OrderedCollection-removeAll-kwl-6937.st tested with the 441 cases in the > CollectionTests category, all green. > > ---------------------------------------------------------------------- > nicolas cellier - 02-19-08 20:28 > ---------------------------------------------------------------------- > "As posted in beginners list, self == aCollection does not handle case > when > aCollection is just a wrapper on self... > So the change won't removeAll problems... > in a 3.9 image try this:" > > | collec1 collec2 | > collec1 := OrderedCollection with: 'a' with: 'b' with: 'c'. > collec2 := MappedCollection collection: collec1 map: (3 to: 1 by: -1). > collec1 removeAll: collec2. > collec1 inspect > > "Agree, yet, the problem lies in super... > Note: MappedCollection was removed from 3.10, but in spirit there can be > other wrapper collections (i used some myself)." > > Issue History > Date Modified Username Field Change > ====================================================================== > 02-19-08 18:12 cdrick New Issue > 02-19-08 18:51 kwl File Added: > OrderedCollection-removeAll-kwl-6937.st > 02-19-08 18:51 kwl Note Added: 0011843 > 02-19-08 20:28 nicolas cellierNote Added: 0011846 > ====================================================================== >

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Re: [Seaside] Re: More Election nominations please!
by merlyn＠stonehenge.com 19 Feb '08

19 Feb '08

>>>>> "tim" == tim Rowledge <tim(a)rowledge.org> writes: tim> I'll second that. We need to see more *serious* interest in running this tim> community or it will fade into moribundity. I'd be happy to throw my hat into the ring, but I'm afraid of being laughed at for not having much more to contribute than 25 years of smalltalk experience and having followed squeak as an interested user since its first announcement. I also have a lot of experience promoting and supporting Perl, and I imagine that this might be useful to a Squeak board. So, would people consider my contributions useful? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 <merlyn(a)stonehenge.com> <URL:http://www.stonehenge.com/merlyn/> Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!

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Loading Rome SVG package
by Marcin Tustin 19 Feb '08

19 Feb '08

I can load the following packages out of the squeaksource repository: Rome-Balloon Rome-Base Rome-PluginCanvas Rome-SVG Rome-Strike Rome-Tests Rome-Reference Rome-BalloonCanvas The rest give me errors about lacking other classes, which I reproduce below. Are the packages that load enough to be useful, or am I going to be stuffed when playing around with Rome? If so, where should I get the dependencies? Also, there's a lack of class comments. Is there documentation elsewhere? Is Rome even ready to be used at all? Rome-Demo also gives me a syntax error: fontFor: aCanvas family: aFamily style: aStyle has a full stop after the comment. After fixing this it gives me an error because RomeFreetypeCanvas is not recognised. Thanks all! Rome-Tweak depends on: This package depends on the following classes: CMatrixTransform CBitmapFill CTransformCanvas CDisplayTransform CCostumeFill CGraphicsFill CNoFill CIdentityTransform CProjectBuilder CSolidFill CGradientFill COffsetTransform Rome-FontManager: This package depends on the following classes: FreetypeFontFace FreetypeFont Rome-Plugin: This package depends on the following classes: SmartSyntaxInterpreterPlugin CCodeGenerator TSendNode

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1-way #become: ?
by itsme213 19 Feb '08

19 Feb '08

#become: apparently (effectively) swaps object ids. Is there anything like x oneWayBecome: y that would pass this test: testOneWayBecome: x to: y | a b | a := x. b := y. x oneWayBecome: y. self assert: [x == y]. self assert: [a == y]. self assert: [b == y]. (Not related to my earlier collection empty question) Thanks - Sophie

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Re: More Election nominations please!
by Matthew Fulmer 19 Feb '08

19 Feb '08

On Mon, Feb 18, 2008 at 03:51:39PM -0800, tim Rowledge wrote: > I'll second that. We need to see more *serious* interest in running this > community or it will fade into moribundity. I love this community. I'll run for board. The biggest thing I want to make happen is serious compatibility between croquet and the squeak release. I also want a lot more communication between the board and the wider community. I can do that. So, I'll volunteer as a board candidate -- Matthew Fulmer -- http://mtfulmer.wordpress.com/ Help improve Squeak Documentation: http://wiki.squeak.org/squeak/808

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More Election nominations please!
by goran＠krampe.se 18 Feb '08

18 Feb '08

Hi all! I am getting stressed out here, please don't do this to me! :) We only have 3 more days until the nomination period is over and only 5 candidates so far - and only already sitting candidates too! It is high time to step up to the plate fellas! Remember: - The board is still very non formal, how it operates and which role it takes is very much up to itself and its members! So don't think you don't fit because of how it has been operating until now. - The current board members are all "old timers", but that is just a very good reason to make a difference! Details: http://wiki.squeak.org/squeak/6025 regards, Göran PS. IMPORTANT: In order to vote - be sure to confirm that you have an account on people.squeakfoundation.org and that your email address is up to date. If you are not already registered on the site do so as soon as possible. Include information about your participation in the Squeak community to aid everyone in determining your appropriate certification. If you have misplaced your people.squeakfoundation.org password there is a link on the login page to allow you to reset it. When the voting period starts all voters will receive an email with instructions and a link to the voting website.

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Questions about primitives - how to avoid one ?
by cdrick 18 Feb '08

18 Feb '08

For whatever reasons, I want sometimes to experiment some smalltalk code by avoiding a primitive call, like in Float>>=, which start by <primitive:47>. Only commenting doesn't work. So, is it possible ? and if the primitive fail, is the smalltalk code evaluated ? Out of curiosity, where can we find the "primitive 47" code ? I imagine in the source of the VM... but if someone can give me some insights :) Thanks again Cédrick

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Beginners February 2008