May 2016 - Pharo-users - lists.pharo.org

Call for feedbacks: Enterprise Pharo ePub version
by Thibault ARLOING May 31, 2016

May 31, 2016

Hi, I created an ePub version of the book Enterprise Pharo for electronic readers. It would be great if you could test it and give me feedbacks on everything that shocks you. You can downlod the file here<http://files.pharo.org/books-ressources/entreprise-pharo/>. Thanks, Thibault

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Mongo-BSON OID LargePositiveInteger increase
by Holger Freyther May 31, 2016

May 31, 2016

Hi, I tried to reach the author for several weeks but he doesn't seem to respond so I am trying to reach a wider audience to either confirm my suspicion or to be corrected. In http://smalltalkhub.com/#!/~MongoTalkTeam/mongotalk/diff/Mongo-BSON-HenrikS… the following change is done: + "digitAdd: wraps around to 0 when result would overflow" + ^ counter := counter + ifNil:[self newCounter] + ifNotNil:[counter digitAdd: 1]! - ^ counter := (counter + 1) \\ 16rFFFFFF! The old code has overflow checking, the new code makes a statement I don't think is true. counter is LargePositiveInteger new: 3 to use three bytes. So given the above code and the experiment (yes I could just add a bigger number) | id | id := LargePositiveInteger. 1 to: (16777215 + 50) do: [:each | id := id digitAdd: 1]. id. Given the comment it should overflow and the value be 50? This is not what the result is. So shall the truncation be added again or at least the comment be updated? The code will go from LargePositiveInteger to SmallInteger when overflowing from three to four bytes but luckily >>#value ... replaceFrom: 1 to: 3 with: self class counterNext startingAt: 1 will even work when counterNext returns a SmallInteger. But given the old code and the comment in the new code this is does not seem to function as intended? kind regards holger PS: The other part is that >>#newCounter doesn't seem to be ever executed. On first load >>#initialize will call >>#reset and on >>#shutDown: calls reset. So the code to "randomize" the initial counter doesn't seem to work.

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Create PNG (from pdf?)
by Sabine Manaa May 31, 2016

May 31, 2016

Hi, in my online application, I create pdf reports with artefact. Works great. Now, I want to show small previews of those reports with real data. I want them to be images (png). I am searching for ideas how to solve this. I have a list of advantages/disadvantages of various ways but no final idea/decision. I am very interested in ideas of the community. Perhaps someone had a similar problem? How did you solve this? Regards Sabine -- View this message in context: http://forum.world.st/Create-PNG-from-pdf-tp4898103.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Re: [Pharo-users] [ANN] New Pharo Glorp version and Book chapter
by Esteban A. Maringolo May 31, 2016

May 31, 2016

Thanks all. There were several people that helped me along this endeavor and I thank again the Pharo Consortium for pushing this. 2016-05-30 5:04 GMT-03:00 Denis Kudriashov <dionisiydk(a)gmail.com>: > Good job, Esteban. > Now we need good Garage drivers for databases which not lock image. Does > anyone plan to work on Oracle and SQLServer backends? The Garage drivers got hurt by the changes in the FFI API (UFFI), but there are some people working on getting them back for Pharo 5. This is really important, and for those RDBMS you mention in particular, according to a survey [1] I did at the end of last year. We'll get there. Those willing to discuss issues or collaborate on these topics can always use this mailing list, but there is an active community of developers in the Pharo Project Slack team, we have one channel dedicated to database discussion [2]. Also, I copied the latest commit from the SmalltalkHub repo to GitHub in order to use its issue tracker [3] for bug reporting. Regards! [1] https://medium.com/@emaringolo/pharo-rdbms-support-survey-results-9c8f64087… [2] https://pharoproject.slack.com/messages/databases/ [3] https://github.com/DBXTalk/Glorp/issues

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[ANN] LibnotifyBinding: a binding to libnotify 0.7.6 for Pharo
by Julien Delplanque May 30, 2016

May 30, 2016

Hello, I took the libnotify [0] binding for Squeak [1], adapted it to use the Pharo UFFI API and enhanced it. It is available here [2] and seems to work well (see attached image). It does not cover all libnotify possibilities (see the README on github) but it is already usable to display notifications with eventually icons, set urgency, set timeout, etc... It was great to try UFFI, it is really easy to use. Thanks a lot for it! :-) Regards, Julien Links: [0]: https://developer.gnome.org/libnotify/ [1]: http://www.squeaksource.com/libnotify.html [2]: https://github.com/juliendelplanque/LibnotifyBinding

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[ANN] OSSubprocess Bugfix release
by Mariano Martinez Peck May 30, 2016

May 30, 2016

Dear all, I have just released a new bugfix release v0.2.3 for OSSubprocess as you can see in [1]. I recommend everyone to move to this release. Cheers, [1] https://github.com/marianopeck/OSSubprocess/releases/tag/v0.2.3 -- Mariano http://marianopeck.wordpress.com

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Unified FFI: pointer of String as function parameter
by Julien Delplanque May 30, 2016

May 30, 2016

Hello everyone, I have a C function to call from Pharo that looks like this: int my_function(char ** parameter); This function fill the pointer on the String given as parameter. How can I use this from pharo Unified FFI? I mean, how to get a pharo String filled by this function? Thanks in advance, Julien

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[ANN] New Pharo Glorp version and Book chapter
by Esteban A. Maringolo May 30, 2016

May 30, 2016

Hello all, During the first part of the year, and sponsored by the Pharo Consortium, I started a new port of Glorp, the Object-Relational mapper, based on the latest version available in VW 8.0.1. This latest port was done from scratch in Pharo and brings features and bugfixes that were accumulated in the VW port during more than 5 years (previous Pharo port) and weren't available until now; and it uses the Garage database drivers (but not limited to them). During the last couple of months, and also by request of the Consortium, I wrote a chapter for one of the Pharo books describing Glorp as much as possible, with tutorials and key concepts. The chapter ended up being the longest in text and pages of all written; the domain is so broad and deep that I'm considering taking it to a whole book, who knows... The book is available at <https://ci.inria.fr/pharo-contribution/job/PharoBookWorkInProgress/lastSucc…>, and I will welcome suggestions and corrections as pull requests to <https://github.com/SquareBracketAssociates/PharoInProgress> The Glorp repository is the same as the previous one (http://www.smalltalkhub.com/#!/~DBXTalk/Glorp) and the current Metacello configs will load the previous version for Pharo 4 and the new version for Pharo 5. For the foreseeable future I'll continue maintaining Glorp, but the code is MIT and I'm open to contributions (I'll set up a Github repo in the next days). Also I've been running production software based on Glorp for a few years now, so my experience with it cover most of its features and usage patterns, so if you have particular questions not covered by the book chapter or any other material feel free to ask me, this mailing list or to the Glorp mailing list at <glorp-group(a)googlegroups.com>. Best regards! Esteban A. Maringolo

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(no subject)
by Franklin Mike May 29, 2016

May 29, 2016

Hi ! I'm new on pharo and I realy like its vision. To learn more about the system I decide to write a package that handle Webcam. The package should be able to : - start webcam - take photo - record a video. The wonderfull thing is that I don't know where to start, Every advice is welcome. Thanks! .

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QCMagritte & Voyage?
by Udo Schneider May 29, 2016

May 29, 2016

All, I'm currently trying to wrap my head around QCMagritte. So far it seems to include most of what I need. I'm not sure though how/where to integrate a persistency layer (i.e. Voyage in this case). I'm either missing some place to activly take control and do saving/upgrading or any callback when objects/collections have been changed. Any pointers or sample code? Thanks, Udo

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