December 2016 - Pharo-users

Adding our local hackerspace to Pharo Teachers page
by Offray Vladimir Luna CÃ¡rdenas April 7, 2017

April 7, 2017

Hi :-), We're teaching/learning Pharo in a consistent fashion in our local hackerspace, HackBo in BogotÃ¡, Colombia. Could you please add this line to the Pharo Teachers page: HackBo, Hackerspace en BogotÃ¡, Colombia. http://hackbo.co/ Thanks, Offray

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[ANN] Image saver with time tag
by phil＠highoctane.be March 18, 2017

March 18, 2017

I like to save images with a time tag and got tired of typing in the save window. So, there is HOImageSaver. https://github.com/Pharophile/HOImageSaver It works with Pharo 5. Load as follows: Metacello new githubUser: 'pharophile' project: 'HOSImageSaver' commitish: 'master' path: 'packages'; baseline: 'HOImageSaver'; onWarningLog; load Phil

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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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GitFileTree in Pharo 5
by sergio ruiz Feb. 13, 2017

Feb. 13, 2017

Hey, all. I am trying to install GitFileTree from the Catalog Browser. I get a warning that itâs not tested with Pharo 5. I go ahead anyway, and it just hangs. Has anyone else installed it on macOS? Is there a different package I should be using? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key:Â http://bit.ly/29z9fG0 #BitMessageÂ BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.Village-Buzz.com http://www.ThoseOptimizeGuys.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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Re: [Pharo-users] How to view hierarchy of multiple classes in a package?
by Henrik Nergaard Feb. 1, 2017

Feb. 1, 2017

Changing ClassWidget>>#showHierarchy to: showHierarchy: aBoolean | all | (showHierarchy := aBoolean) ifFalse: [ ^ self ]. all := IdentitySet new. model selectedPackageGroup asNautilusSelection classes do: [ :cls | all addAll: cls allSuperclasses; addAll: cls withAllSubclasses ]. self cachedHierarchy: (SortHierarchically buildHierarchyForClasses: all) Will make the hierarchy button show the tree for all classes in that package/tag. [cid:image001.png@01D26292.CA436F50] Best regards, Henrik From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of Tim Mackinnon Sent: Wednesday, December 28, 2016 5:24 PM To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Subject: Re: [Pharo-users] How to view hierarchy of multiple classes in a package? This seems to have generated a bit of conversation which has helped me quite a bit. Denis, your picture has made me realise that the System browser is a bit better than I realised. However the example I was looking at was a package that had a series of Announcement subclasses, AND what wasn't obvious was that they were all subclasses of the same parent "Announcement", as that isn't shown - you just get a series of classes not rooted under some parent (even if it was object). I'm guessing that just things that are subclasses of each other in the same package are shown? I was hoping that pane might show - Announcement + A + B + C I'm now wondering what it will show if you had a few different subclasses of the different collection classes (ok it's a bad idea to subclass them, but my point is if you had a few models at different points in a hierarchy)? I'm guessing you would see the same flat list - but I will go and try that to help me learn a bit more. Tim

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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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DNU on materializing a fueled out exception
by Holger Freyther Jan. 22, 2017

Jan. 22, 2017

Hi, I showed Pharo to a friend and wanted to show the nice feature of fueling out an exception and then using FLMaterializer class>>#materializeFromFileNamed: to load it back and get a debugger up. In Pharo5 I am presented a DNU instead. The DNU is on GTGenericStackDebugger as it doesn't understand the message Fuel is sending. What to fix, Fuel to use the new protocol or GTGenericStackDebugger to honor the old protocol? FueldOutStackDebugAction>>#serializeTestFailureContext: aContext toFileNamed: aFilename | serializer | serializer := FLSerializer newDefault. self encodeDebugInformationOn: serializer. serializer addPostMaterializationAction: [ :materialization | Smalltalk tools debugger openOn: Processor activeProcess context: materialization root label: 'External stack' contents: nil fullView: false ]. So it looks like now it should create a debug session first and then pass it to the debugger? I think loading new fuel in Pharo3.x is still possible so maybe it is best to re-add that protocol? comments? holger

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