Squeak-dev August 2008

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103 participants
139 discussions

Help: Keeping in-image class schema version + persistent data version consistent
by itsme213 20 Aug '08

20 Aug '08

Looking for best-practice suggestions on this, with a goal of simplicity: My image (specifically, the class schema in my monticello) evolves. I have multiple repositories with snapshots of object graphs persisted, each from some version of the image. At any time I want to be working with the latest version of the image, across all snapshots. What kind of version-related information should I save with (a) the image (b) the persisted snapshots? What policy to use to keep these in sync? Would some Squeak equivalent of Rails/migrations be relevant, and what might it look like? Thanks! Sophie

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[Squeak-dev Images] Stats and charts about downloads
by Damien Cassou 20 Aug '08

20 Aug '08

Hi, I've created a new application on dabbledb.com to understand better what is downloaded by users of the dev-images (both dev and web, both Squeak and Pharo). I designed 2 charts and 2 table: http://damiencassou.dabbledb.com/publish/dev-imagesdownloads Please have a look at them and give me feedback: - other possible charts or tables? - conclusions? - any comment? -- Damien Cassou Peter von der Ahé: «I'm beginning to see why Gilad wished us good luck». (http://blogs.sun.com/ahe/entry/override_snafu)

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FFI problem: "could not coerce arguments"
by Mariano Martinez Peck 19 Aug '08

19 Aug '08

sorry...now it goes in English... I have a problem trying to invoke a function through FFI. I have bee using FFI y some functions with no problem but now I have "could not coerce arguments". This is the first time I have a void* parameter, so I believe that could be the problem. The function definition is: int *odbx_set_option*( odbx_t* *handle*, unsigned int *option*, void* *value* ) Here is an example that shows how to use it in C: option = ODBX_TLS_ALWAYS; if( ( err = odbx_set_option( handle, ODBX_OPT_TLS, (void*) &option ) ) < 0 ) { fprintf( stderr, "odbx_set_option(): %s\n", odbx_error( handle, err ) ); odbx_finish( handle ); return err; } This is my method that map that function with FFI: apiSetOption: handle option: anOption value: aValue "int odbx_unbind(odbx_t*)" <cdecl: long 'odbx_set_option' (ulong ulong void*) module: 'opendbx' > ^self externalCallFailed I proobed void*, void, ulong y ulong* but I had that error in all cases. Here is how my method is used: err := OpenDBX apiSetOption: self option:32 value:1. So, can someone help me? thanks, mariano

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Clearing the changes file
by Thomas Kowark 18 Aug '08

18 Aug '08

Hi all, I am currently developing an application that continuously creates and deletes methods on its own. This, however, leads to the changes file exceeding the limits of what Squeak can handle. The error message tells me to take "some actions", but unfortunately I'm not quite sure, what to do now. I have renamed the changes file as a first fix, but this leads to errors upon startup. So does anybody know what might be the best solution here? Secondly, I wanted to ask if it is possible to prevent changes of methods that match certain naming patterns from being written to the changes file? kind regards, Thomas Kowark -- GMX Kostenlose Spiele: Einfach online spielen und Spaß haben mit Pastry Passion! http://games.entertainment.gmx.net/de/entertainment/games/free/puzzle/61691…

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D-Bus on Windows
by Stéphane Rollandin 18 Aug '08

18 Aug '08

hello list, what is the status of D-Bus support in Windows system ? Stef

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The Weekly Squeak Summary No. 19: May 4 - Aug 16, 2008
by Michael Haupt 18 Aug '08

18 Aug '08

Dear Squeakers, welcome to this edition of The WeeklySqueakSummary, an irregular traffic-dependent report on what's going on in the world of Squeak based on the WeeklySqueak blog. It's been a rather long time since the last issue because I've been on parental leave for two months... anyway, here we go again with a slightly longer e-mail than usual. Highlights of the past weeks: First, some updates. Monticello 2 is out [36], and so is Swazoo 2.2 [32]. The former is essentially a complete re-write with an all-new core versioning mechanism. The latter especially features faster uploads. The popular "Squeak by Example" book has also been updated - updated to be available in another language: French [4]! Some interesting new projects have emerged: at Qwaq, Eliot Miranda is building an improved Squeak VM called Cog [14]; and what started as a coursework assignment at HPI to improve some of the functionality of JSqueak [20] has been turned into a SourceForge-hosted project called Potato [25]: a Squeak VM implemented in Java. Also an, albeit different, VM, MagLev supports Ruby on top of GemStone/S [12]. SandstoneDB [28] is a simple OODBMS based on ideas from ActiveRecord and Prevayler. Algernon [2] helps navigating the Squeak image. The native widgets side of the universe has interesting news. After a long time, wxSqueak has been updated [27] - let's hope it's come fully back to life! SeasideXUL [5] uses the Firefox XULRunner to support building GUIs, and one of this year's Squeak-related GSoC projects [26] is SqueakGTK. Squeak has been ported to two more platforms: the iPhone [16], and WiFiBots [7]. Last but certainly not least, congratulations to the CMSBox team for winning an UI usability award [35]! The past weeks' news items: [1] Seaside: your next web framework http://news.squeak.org/2008/05/05/seaside-your-next-web-framework/ [2] Algernon: your personal assistant for Squeak http://news.squeak.org/2008/05/07/algernon-your-personal-assistant-for-sque… [3] Squeak Etoys - Students Build Their Own Games In Four Days http://news.squeak.org/2008/05/09/squeak-etoys-students-build-their-own-gam… [4] Squeak by Example now available in French http://news.squeak.org/2008/05/11/squeak-by-example-now-available-in-french/ [5] Native look and feel apps with Firefox XULRunner http://news.squeak.org/2008/05/13/native-look-and-feel-apps-with-firefox-xu… [6] 16th International Smalltalk Joint Conference - Call for Contributions http://news.squeak.org/2008/05/16/16th-international-smalltalk-joint-confer… [7] Driving WifiBots with Squeak http://news.squeak.org/2008/05/18/driving-wifibots-with-squeak/ [8] S3 Highlights: Lively, COLA, Huemul, Squeak on Python and more http://news.squeak.org/2008/05/20/s3-highlights-lively-cola-and-more/ [9] German Squeak Association Meeting: Demos http://news.squeak.org/2008/05/22/german-squeak-association-meeting-demos/ [10] New Yorkers' chance to see Squeak-based education tools http://news.squeak.org/2008/05/24/new-yorkers-chance-to-see-squeak-based-ed… [11] Dan Ingalls Interview on FLOSS Weekly http://news.squeak.org/2008/05/29/dan-ingalls-interview-on-floss-weekly/ [12] Gemstone's MagLev presented at RubyConf http://news.squeak.org/2008/06/03/gemstones-maglev-presented-at-rubyconf/ [13] Smalltalk Solutions 2008 - two weeks to go! http://news.squeak.org/2008/06/05/smalltalk-solutions-2008-two-weeks-to-go/ [14] Qwaq developing new fast Smalltalk VM http://news.squeak.org/2008/06/07/qwaq-developing-new-fast-smalltalk-vm/ [15] Randal Schwartz to join Smalltalk podcast (warning, some recursion involved) http://news.squeak.org/2008/06/09/randal_schwartz_podcast/ [16] Squeak on the iPhone! http://news.squeak.org/2008/06/11/squeak-on-the-iphone/ [17] Conference News: Smalltalks 2008 in Buenos Aires http://news.squeak.org/2008/06/13/conference-news-smalltalks-2008-in-buenos… [18] Conference news: C5-09 in Kyoto http://news.squeak.org/2008/06/16/conference-news-c5-09-in-kyoto/ [19] ESUG Awards for innovative software http://news.squeak.org/2008/06/18/esug-awards-for-innovative-software/ [20] JSqueak - Smalltalk interpreter written in Java http://news.squeak.org/2008/06/21/jsqueak-smalltalk-interpreter-written-in-… [21] Conference News - Libre Software Meeting, 1-5 July, France http://news.squeak.org/2008/06/24/conference-news-libre-software-meeting-1-… [22] One stop shop for Smalltalk jobs http://news.squeak.org/2008/06/28/one-stop-shop-for-smalltalk-jobs/ [23] Smalltalk Solutions 2008 - slides now available http://news.squeak.org/2008/07/01/smalltalk-solutions-2008-slides-now-avail… [24] Conference news: ESUG 2008 - more information http://news.squeak.org/2008/07/04/conference-news-esug-2008-more-informatio… [25] Potato - version of JSqueak from HPI http://news.squeak.org/2008/07/07/potato-version-of-jsqueak-from-hpi/ [26] Squeak's Google Summer of Code projects http://news.squeak.org/2008/07/10/squeaks-google-summer-of-code-projects/ [27] WxSqueak reaches 0.5 http://news.squeak.org/2008/07/14/wxsqueak-reaches-05/ [28] SandstoneDb - Simple ActiveRecord-style persistence in Squeak http://news.squeak.org/2008/07/16/sandstonedb-simple-activerecord-style-per… [29] Get recording your Squeak videos now! http://news.squeak.org/2008/07/19/get-recording-your-squeak-videos-now/ [30] Plopp featured in MacWorld http://news.squeak.org/2008/07/23/plopp-featured-in-macworld/ [31] Avi Bryant Interview http://news.squeak.org/2008/07/28/avi-bryant-interview/ [32] Swazoo 2.2 beta with fast file upload released http://news.squeak.org/2008/08/01/swazoo-22-beta-with-fast-file-upload-rele… [33] Volunteers wanted for Squeak project http://news.squeak.org/2008/08/06/volunteers-wanted-for-squeak-project/ [34] New Video Tutorial - Squeak Bug/Fix Reporting http://news.squeak.org/2008/08/11/new-video-tutorial-squeak-bugfix-reportin… [35] CMSBox wins top usability awards http://news.squeak.org/2008/08/13/cmsbox-wins-top-usability-awards/ [36] All new Monticello 2 http://news.squeak.org/2008/08/15/all-new-monticello-2/ 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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Curl
by Steven W Riggins 18 Aug '08

18 Aug '08

Is anyone using the curl plugin from: http://wiki.squeak.org/squeak/5865 I am trying to do a post to a site that redirects, but I see two anomalies: 1) the contents remain in the contents buffer, so that tells me I am doing posts incorrectly 2) I just get the http page back, not the results of the post I tried this with another form and it posted ok, but I did get the post in the contents buffer as well. The following command to curl works as desired: curl -d "q=title:help&fmt=xml&rows=50&fl=identifier&xmlsearch=Search" http://www.archive.org/advancedsearch.php/searchresults.php but: c := Curl new. c url: 'http://www.archive.org/advancedsearch.php/searchresults.php' c clearContents; contents: 'q=title:dodgers&fmt=xml&rows=50&fl=identifier&indent=&xmlsearch=Search' c post returns: 'q=title %3Adodgers&fmt=xml&rows=50&fl=identifier&indent=&xmlsearch=Search' ie, the post failed. Steve

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looking for PhD candidates with Smalltalk background -- Software Composition Group in Bern
by Oscar Nierstrasz 18 Aug '08

18 Aug '08

Hi, I am looking for PhD candidates with strong background in OOP, dynamic languages, and especially Smalltalk. Candidates should have research interests in some of the following topics: - software evolution - software models - model-driven-engineering - reverse engineering - domain specific languages - dynamic analysis - integrated development environments - programming languages design - virtual machine technology Have a look at the following web pages for descriptions of current research projects and possible PhD topics. http://scg.unibe.ch/Research/SNF08/ http://scg.unibe.ch/Research/Hasler07/ I will be at ESUG 08 in Amsterdam -- in case you are attending, you can also meet me there to discuss it. Kind regards, Oscar Nierstrasz --- Prof. Dr. O. Nierstrasz -- Oscar.Nierstrasz(a)iam.unibe.ch Software Composition Group -- http://www.iam.unibe.ch/~scg University of Bern -- Tel/Fax +41 31 631.4618/3355 vcard: http://www.iam.unibe.ch/~oscar/oscarNierstrasz.vcf

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How to really make portion of code optional
by cdrick 18 Aug '08

18 Aug '08

Hi, I'm looking for a way to hide/show portion of code depending on if it's in development or production mode. First idea is to wrap the code in question around a global productionMode var. But I was wondering if there is a better way. Somethink to really hide these portions of code for efficiency. I know this is not a big deal (for my project) but I'm quite sure something may exist maybe at the VM level, so ... Thanks in advance, Cédrick

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Equivalent to VW's Assets?
by Antony Blakey 18 Aug '08

18 Aug '08

Hi, I'm porting some L&F code from VW. In VW I use the Assets package to store graphic resources in the image. Is there an equivalent for Squeak? If not, what's the current best practice for that? Thanks, Antony Blakey ------------- CTO, Linkuistics Pty Ltd Ph: 0438 840 787 It is no measure of health to be well adjusted to a profoundly sick society. -- Jiddu Krishnamurti

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