June 2011 - Pharo-users - lists.pharo.org

printOn: vs printString
by Alan Rodas June 25, 2011

June 25, 2011

Hello folks I was wondering why does Smalltlak prefer the printOn: aStream method over the printString method. As I work with Java and C# all the time, I'm used to define a printString like method where you return a string representing the object, and, today, having to do the same in smalltlak I unconsciously redefined the printString method. As soon as I realize that my collections were using printOn: instead of my redefined printSrting method for printing their contents, I wondered: Why was this decision taken? I mean, every other language seems more simple (from the end user point of view, as it does not require the user to understand streams at all), In the other hand, printOn: seems more versatile. Pointless question, I know, but I'm quite curious and I cannot seem to find anything about this, and I though that you guys may know. Cheers -- Alan Rodas Bonjour

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[COTDC] 77 - LazyMorphTreeMorph
by laurent laffont June 24, 2011

June 24, 2011

Today: LazyMorphTreeMorph Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest Laurent

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Parsing XML into sorted elements
by Sean P. DeNigris June 23, 2011

June 23, 2011

I want to sort nodes of a certain parent node as they are parsed by XMLDOMParser. The following is what I tried so far. It causes the image to hang and CPU to sweat. I've put half a day in - before I continue, what's the best way to do this? Am I on the right path? It seems very complicated ( I almost feel like I'm working with Morphic ;-) ) The parent node is XMLPageElement which is a subclass of XMLElement, in which I overrode #nodesClass to return XMLSortedList. XMLSortedList is a subclass of XMLNodeList with the following overrides: initialize self nodes sortBlock: self sortBlock. sortBlock ^ [ :a :b | a < b ]. species ^ super XMLSortedList. There is also XMLSortedList class>>collectionClass ^ SortedCollection. The above overrides XMLOrderedList's use of OrderedCollection. I refactored XMLOrderedList by pulling all references to OrderedCollection into this method. Thanks. Sean -- View this message in context: http://forum.world.st/Parsing-XML-into-sorted-elements-tp3615867p3615867.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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[COTDC] 75 - MorphTreeNavigationBar
by laurent laffont June 23, 2011

June 23, 2011

Today: MorphTreeNavigationBar Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest Laurent

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Re: [Pharo-users] [COTDC] 68#2 MultiTextComposer
by Alain Plantec June 23, 2011

June 23, 2011

For TextComposer first ---------------------- Class intention I compose a collection of lines to fit the size of a physical container (especially according to the paragraph contrainer height, width and position). The result of my computation is a collection of TextLine that is ready to be managed by a paragraph to be drawn on a canvas in a particular screen area. Class collaborations I collaborate with a CompositionScanners for character measurement and with a TextContainer which holds the text to be composed Class main API #composeLinesFrom: argStart to: argStop delta: argDelta into: argLinesCollection priorLines: argPriorLines atY: argStartY textStyle: argTextStyle text: argText container: argContainer wantsColumnBreaks: argWantsColumnBreaks It is my main public method which returns the collection of TextLines (as the first element of an array) ---------------------- and then for MultiTextComposer ---------------------- See TextComposer comments first. I'm a specialization for the management of complex text (internationalized text). TextComposer and MultiTextComposer shoukl be merged in a near futur ----------------------

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Fwd: Faster That light
by StÃ©phane Ducasse June 23, 2011

June 23, 2011

Olivier should not be shy :) I think that lot of people can be interested by FTL (faster than light) Stef Begin forwarded message: > From: Olivier Auverlot <olivier.auverlot(a)gmail.com> > Date: June 23, 2011 2:15:33 PM GMT+02:00 > To: Mariano Martinez Peck <marianopeck(a)gmail.com> > Cc: StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > Subject: Faster That light > > Hi Mariano, > > I have worked the last days on a generic connection pool for Pharo. The objective is to improve performances for an application that uses a network data source (databases, LDAP, etc.). > > My work is now stable and the gain of performances is good. For exemple, I have a benchmark that uses a SqueakDBX/PostgreSQL database and a LDAP directory. Without the pool, the test take 6,61s, with the pool, only 0,367s :-) > > I have made many stress tests for testing the fiability. This morning, the connection pools has processed 270000 requests without problems. > > I think that my project can interest you. I don't know if the code is ready for production. > > The projet is on squeaksource and I have added your account (and Stef also) as Guest. > MCHttpRepository > location: 'http://www.squeaksource.com/FasterThatLight' > user: '' > password: '' > Thanks for remarks and critics. > > Best regards > Olivier

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Slides of my BSUG Talks
by Sven Van Caekenberghe June 23, 2011

June 23, 2011

Hi, I've put PDF slides online of the 2 talks that I gave at the last BSUG (Belgian Smalltalk Users Group) meeting: Pharo - The new kid on the block http://homepage.mac.com/svc/Slides/pharo-the-new-kid-on-the-block.pdf Zinc HTTP Components - Introduction and overview http://homepage.mac.com/svc/Slides/zinc-http-components-overview.pdf We had nice and productive discussions during and after these talks, so I think it was a success. Sven

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Browser Panes (or is it Pains??)
by Tony Giaccone June 23, 2011

June 23, 2011

I downloaded squeak to try out the UI Generator created by the Haso Plattner Institiute. When I did that I noticed that the squeak system browser has a feature that solves one of my constant annoyances in pharo. The panes of the browser are re-sizeable in the x direction. I can make different panels different sizes. Is there a setting or someway to easily add this capability to the Pharo System Browser? Tony Giaccone

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Anyone knows why Sophie was migrated from Squeak/Smalltalk to Java?
by Offray Vladimir Luna CÃ¡rdenas June 22, 2011

June 22, 2011

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all, I'm searching for inspiration about my Pharo project (I want to make something like Prezi[1]). So I was revisiting the Sophie project pages and an old question came back: Why Sophie was migrated from Squeak/Smalltalk to Java? Anyone could help me with the answers? [1] http://prezi.com/ Cheers, Offray -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJOAhfmAAoJEGiex2828ICwausH/1BU6G4KBT9XDp4CjH46ONTA kMsWx8i+/sVVA1Q9mJhHLa+Gz5D6/LszfLTuaRZDTBBYNxEN/SQb3ELsdBui+CjV IDkLsLqP7aDK3gG9di+7wESrO54s8klDCAn1NCUhzJ7K1gaUqSDHd506yyzsq0Vx 5XzfIXDqB7UW6dU6cpESTcWaLmv0gSaOtDNOD4NnLWovqKKf0Ucup6Y5zqkt+X0I tHEQbYnAwF6O9bi4hv61sgXq8NdMqrlc47tDswydMiLG31WWlPKGAihdftLvCv3S wHD1tLCWTSf03u8uvvuauLt1cpV8P+CwE1sihhUn91u39ClXcYA3Ya+SQQ350/g= =6WQt -----END PGP SIGNATURE-----

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[COTDC] 74 - MorphTreeNodeMorph
by laurent laffont June 22, 2011

June 22, 2011

Today: MorphTreeNodeMorph Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest Laurent

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