November 2016 - Pharo-users

doesNotUnderstand: infinit loop
by Hilaire March 17, 2017

March 17, 2017

Hi, My Pharo4.0 image is in a situation where each MNU exception throw from a DNU result in infinite loop, locking the image, even not breakable with alt+[.]. >From the doesNotUnderstand: message, the "exception reachedDefaultHandler" always returns true, and it results in the execution of the true block, sending again the original message to the original object, repeating a DNU and so on. Any idea how to fix that? Thanks Hilaire doesNotUnderstand: aMessage "Handle the fact that there was an attempt to send the given message to the receiver but the receiver does not understand this message (typically sent from the machine when a message is sent to the receiver and no method is defined for that selector)." "Testing: (3 activeProcess)" | exception resumeValue | (exception := MessageNotUnderstood new) message: aMessage; receiver: self. resumeValue := exception signal. ^exception reachedDefaultHandler ifTrue: [aMessage sentTo: self] ifFalse: [resumeValue] -- Dr. Geo http://drgeo.eu

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Moving from Slack to Discord
by Dimitris Chloupis March 9, 2017

March 9, 2017

I have been aware about Discord for some time now , but I never used it because both Pharo and Unreal channels are on Slack. From my small experience with it, it seemed much more superior to Slack with added bonus that is completely free (open source ) and with no restrictions unlike Slack. But something happened suddenly yesterday, I opened Unreal in Slack and it was gone with a notification that they moved to Discord. So I grabbed this opportunity to create a Pharo server you can join here https://discord.gg/F6nAd Discord works as web apps but also you can download as an app for Windows, Macos , iOS and Android. I will be around in Discord because I generally browser Unreal channels. The nice thing about Discord also is that it offers both audio and video chat for free which can work great for Pharo sprints. Anyway there is no harm on testing it.

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GitFileTree on Pharo 5.0
by Trussardi Dario Romano Feb. 26, 2017

Feb. 26, 2017

Ciao, i have a Pharo5.0 Latest update: #50763 image run on MacBook Pro with OS X 10.7.5. When i load the GitFileTree support the environment go in loop and i need to shut it. Considerations? Thanks, Dario

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Coding XPath as Smalltalk
by PBKResearch Feb. 20, 2017

Feb. 20, 2017

Hello I am using XPath as a way of dissecting web pages, especially from Wiktionary. Generally I get good results, but I could get useful extra flexibility by using the binary Smalltalk operators to represent XPath, as mentioned at the end of the class comment for XPath. However, the description there is very terse, and I am having difficulty seeing how to include more complex expressions, especially attribute tests. I have put some of my XPath expressions through the XPath compiler and looked at the output, and out of that I have found expressions which work but look very clumsy. As an example, I have used the fragment: document xPath: '//div[@id=''catlinks'']//li//text()' and found that an equivalent is: document //'div' ?? [:node :x :y|(node attributeAt: 'id') = 'catlinks']//'li'//[:n| n isStringNode]]. (I had to put two dummy arguments in the three-argument block to get it to work.) Is there a more extensive explanation of the use of these binary operators? If not, could some kind person show me the most concise translation of the sample XPath above, to give me a start in working out more complex cases? Many thanks for any help. Peter Kenny

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how to see methods implemented in super classes
by Sanjay Minni Jan. 24, 2017

Jan. 24, 2017

Hi is there a way to see in the browse all the methods implemented in the super classes as well, maybe in a different colour, i thought it was possible but am unable to find it regards Sanjay ----- --- Regards, Sanjay -- View this message in context: http://forum.world.st/how-to-see-methods-implemented-in-super-classes-tp482… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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A Suggested Promotion
by Richard Eng Jan. 1, 2017

Jan. 1, 2017

I have a suggestion for future Smalltalk advocates... The advent of Pi Zero last month is an interesting opportunity. This is a very, very cheap Raspberry Pi. Anyone can afford it. I'm thinking of kids, in particular. What if we could get kids to delve into Squeak or Pharo (Squeak is better optimized for Raspberry Pi) via the Pi Zero? A competition could be set up in various countries, such as Canada, Britain, Australia, Japan, etc., where the best student submission for a Smalltalk-based Pi Zero application would win a small scholarship prize (say, $500). A panel of judges in each country would decide the winner. The contest would be much less ambitious than my now-defunct Canadian Smalltalk Competition <https://www.kickstarter.com/projects/1520902870/canadian-smalltalk-competit…> (CSC). Less control (no real need to prevent cheating). Easier to raise the prize money. The nice thing is that it would be a multi-national promotion (it's tough getting a national school competition like CSC going in other countries). Of course, because it's less ambitious, we can expect to reach fewer kids. Instead of thousands, probably more like hundreds. I could be totally wrong on this; I could be totally surprised! I might even come out of retirement <https://medium.com/@richardeng/today-is-the-first-anniversary-of-smalltalk-…> to offer some creative services (eg, promotional graphics, websites, etc.). ð Anyway, it was just an interesting thought I had. Don't know if it stands up to scrutiny. Cheers, Richard

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[ANN] Pharo Association has a new Website!
by Marcus Denker Dec. 15, 2016

Dec. 15, 2016

Hello, We have changed the backend of the Pharo Association. https://association.pharo.org <https://association.pharo.org/> If you ever joined the association in the past, please consider to re-subscribe. We have added already all existing active members, in this case you should have already received a new password. For all questions, do not hesitate to contact assocation(a)pharo.org <mailto:assocations@pharo.org> Marcus

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NeoCSVWriter automatic quotes
by Peter Uhnak Dec. 5, 2016

Dec. 5, 2016

Hi, is it/would it be possible to modify NeoCSVWriter to add quotes only where necessary? So only if the written value contains the separator (is there any other case that would require the quotes?). Thanks, Peter

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Re: [Pharo-users] Pier3 with latest Pillar?
by stepharo Dec. 4, 2016

Dec. 4, 2016

Hi peter I do not know but I would love that it would work. I should find some time to do a new pass on pillar. On my first todo: - fix use of DNU instead of plain magritte methods. - extract object out of the command line. - document, document and document. Stef Le 10/11/16 Ã 22:34, Peter H. Meadows via Pharo-users a Ã©crit :

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BioSmalltalk win ...almost
by Serge Stinckwich Dec. 1, 2016

Dec. 1, 2016

Hi Hernan, apparently BioSmalltalk is the faster in the field of Bio* platforms (BioPerl, BioPython, BioJava, ...) and the more trendy: http://www.ijcseonline.org/spl_pub_paper/PID%2023.pdf I would love to believe in that ;-) But if you read carefully the paper, you will found that authors has made a dramatic mistake ... They think that Pharo was the name of BioSmalltalk ... and then they compare with Google Trends, Pharo against BioPerl, BioPython, ... Anyways the statement that BioSmalltalk is the faster is maybe true :-) Hernan did you know this paper ? Regards, -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

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