May 2014 - Pharo-users - lists.pharo.org

Class definition changes in change log
by Arturo Zambrano May 25, 2014

May 25, 2014

Hi All, Trying to recover lost changes from another (broken) image I noticed that only method definition and do-it are saved. I'm in a middle of a refactoring where I changed hierarchies, renamed classes and inst vars. When trying to recover the changes, class name changes are not there, so most of the method changes are not applicable. I don't know if I am missing something important regarding how to recover changes. I just dragged the old changes file onto my new image and then browse the changes (where I can only see methods and do-its) As a work around I manually did all the class definition changes (superclass, class name, inst var names), and re run all the changes from the "Recent Changes" window. As a result I recovered most of the work of the last night :) (but I lost some time trying to figure out the problem) Is it OK that my changes file has not class definition changes? Am I missing sth? This is the expected behavior when recovering the changes from another image? thanks best regards arturo

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Downloading tweets
by Arturo Zambrano May 24, 2014

May 24, 2014

Hi All, you can now download some code for downloading tweets using REST and Streaming Twitter APIs. It is far from complete but do the job we need for now. Besides tweets downloading you can also: - get users information. - retrieve the profile picture of users. - ask for the relationship of the two users Please find attached some info regarding dependencies (no metacello config for now), and manual login procedure for the first time you connect to twitter. We will work on tests, completion and more practical documentation soon. At the same time, when the visualization part of our Twitter thing is ready, we will communicate it. Thanks Rosario for her help, and Sven for advice on the streaming feature of Zinc. regards art

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MNU PREyeInspector>>elements for PRDocument with EyeTreeInspector
by Ben Coman May 24, 2014

May 24, 2014

I was looking at PRAnnotatedParagraphTest>>testParseBasic and Inspected the result of the following... | wiki text tree | wiki := '@@foo bar zork'. text := 'bar zork'. tree := PRDocument new add: (PRAnnotatedParagraph new annotation: 'foo'; add: (PRText content: 'bar zork'); yourself); yourself. The Inspector comes up okay using PREyeItemInspector to show PRDocument. However when I change to EyeTreeInspector I get the error "MNU: PREyeItemInspector>>elements" I tried digging into this but its beyond my current understanding. In particular, PREyeInspector seems to have two potential sources of elements: * ivar /tree/ holding a TreeModel that might return roots and/or children * ivar /object/ holding a NewValueHolder holding a PRDocument that might return its children. Is there somewhere I should log a case for Pillar? cheers -ben

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Pillar annotations for Latex
by Ben Coman May 24, 2014

May 24, 2014

The Pillar documentation [1] says... "An annotated paragraph starts a line with @@ followed by either todo or note. For example, @@note this is a note annotation. generates Note: this is a note annotation. And, @@todo this is a todo annotation generates a todo annotation that is not visible in the output." However this does not work when rendering to LaTex. * The notes do not start with "Note:" * The todos are visible This seemed to be handled by... PRMarkdownWriter>>visitAnnotatedParagraph: anAnnotatedParagraph "Pier seams to lack consistensy here ..." needsABreak ifTrue: [ canvas addInvisibleSeparator ]. anAnnotatedParagraph annotation asLowercase = 'todo' ifTrue: [ ^ self visitCommentedLine: anAnnotatedParagraph ]. self nest: [ :brush | brush name: '' with: [ :nestedStream | self writeRawDuring: [ nestedStream << 'Note: '. nestedStream << anAnnotatedParagraph text trimBoth ] ] ]. needsABreak := true. but that there is no equivalent PRLaTexWriter>>visitAnnotatedParagraph: and the following is used by default... PRVisitor>>visitAnnotatedParagraph: aDocument self visitParagraph: aDocument In seeking to fix this for LaTex I found... * /needsABreak/ is an ivar of PRMarkdown and I guess not applicable to LaTex * #nest: and the /nest/ ivar it references belong to PRMarkdown, and I'm not sure of their purpose. So I cut those out, which left the following... PRLaTexWriter>>visitAnnotatedParagraph anAnnotatedParagraph annotation asLowercase = 'todo' ifTrue: [ ^ self visitCommentedLine: anAnnotatedParagraph ]. self writeRawDuring: [ nestedStream << 'Note: '. nestedStream << anAnnotatedParagraph text trimBoth ]. ...which works well enough for the usage I see so far in PharoLaserGameTutorial. [2] Now is there any important function missing, or is there a better way to do this? I also want add an annotation type, which I'll describe in a following post. cheers -ben [1] https://github.com/pillar-markup/pillar-documentation [2] https://github.com/bencoman/PharoLaserGameTutorial

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Initializing a class with a Dictionary
by sergio_101 May 23, 2014

May 23, 2014

is it possible to initialize a class with a dictionary? my first thought would be to create a method like: intializeWithDictionary: aDictionary then, loop through the elements and do something like: instVarNamed: key put: value but the book says: Caveat: Although these methods are useful for building development tools, using them to develop conventional applications is a bad idea: these reflective methods break the encapsulation boundary of your objects and can there- fore make your code much harder to understand and maintain.-- should i avoid this? ---- peace, sergio photographer, journalist, visionary #BitMessage BM-2D8VWUJSS41RFKh1ec83preVabHrnniExa http://www.Village-Buzz.com http://www.ThoseOptimizeGuys.com http://www.CodingForHire.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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[ANN] Pharo VM packaging for Ubuntu
by Damien Cassou May 23, 2014

May 23, 2014

Hi, I'm happy to announce a brand new packaging of the Pharo VM. The packaging works with all officially supported Ubuntu releases, both 32 and 64bits (see this list of Ubuntu support dates: http://en.wikipedia.org/wiki/Ubuntu_%28operating_system%29#Releases) I pushed these new packages to a different PPA so I can test without impacting current users : https://launchpad.net/~pharo/+archive/unstable/+packages If you are using an old version of Ubuntu (e.g., Precise 12.04 or even Lucid 10.04), you should try with this new PPA. Please report problems by email to me directly. An advantage of this new packaging is that it should become much easier to create Ubuntu packages for your own Pharo projects. I will talk about that later as I try these new packaging mechanism on the Launcher, Pillar and Phratch projects. -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

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[ESUG 2014] Student Volunteer Program - Cambridge, England 18-22 August
by Damien Cassou May 23, 2014

May 23, 2014

Student Volunteer Program ------------------------------------------------------------------------ If you are a student wanting to attend ESUG at Cambridge this summer, have you considered being a student volunteer? Student volunteers help keep the conference running smoothly; in return, they have free accommodations, while still having time to enjoy the conference. More information at http://www.esug.org/Conferences/2014 http://www.esug.org/Conferences/2014/StudentVolunteers -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

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TWM keybindings
by Matthew Chadwick May 23, 2014

May 23, 2014

hi, I installed version 3.0.1 of TWM for Pharo3, but the keybindings don't work in OSX - any idea what I need to do to make them work ? Cheers.

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Ghost Proxy
by FranÃ§ois Stephany May 22, 2014

May 22, 2014

What is the best way to load Ghost in Pharo 3.0? Is there a configuration somewhere? Is anyone using it? Voyage does seem to use the ProtoObject+dnu+becomeForward trick. Is there any reason for that?

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A possible problem coming from Zinc?
by Usman Bhatti May 21, 2014

May 21, 2014

Hi, When turning on ZincFileLogger on a Zinc server, after some time (1h or so) I get the FileWrite error (see screenshot). I browsed through the bugs related to Zinc in the Fogbugz but couldn't find any bug related to my problem. I get the problem both on Mac (local machine) and Ubuntu (DigitalOcean instance) on Pharo 3.0 (release). This is my code to register logging on the server events: server := ZnMultiThreadedServer startOn: 4001. logger := ZnFileLogger onFileNamed: 'server-log.txt'. server log addListener: logger. Any pointers? tx. Usman [image: Inline image 1]

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