February 2019 - Pharo-users

Re: [Pharo-users] OSProcess / OSSubprocess / LibC uniqueInstance
by David T. Lewis Feb. 19, 2019

Feb. 19, 2019

On Tue, Feb 19, 2019 at 11:37:38AM +0100, Albrecht Baur via Pharo-users wrote: > From: Albrecht Baur <baur.albrecht(a)googlemail.com> > Subject: OSProcess / OSSubprocess / LibC uniqueInstance > To: pharo-users(a)lists.pharo.org > Date: Tue, 19 Feb 2019 11:37:38 +0100 > > I need to execute OS commands from within a x64 pharo 7.01 image on > centos7 (for example: 'zip -r 123.zip zipme/'). > > I found these 3 tools: OSProcess, OSSubprocess, LibC uniqueInstance > > But I did not find any docu on which one to use for which use case. > > * OSProcess is in the catalog browser but fails loading because of > ByteArray>>ifNotNilDo: > -> So OSProcess is not to be used with p7 ? Hi Albrecht, I am sorry that I cannot check it right now, but it may be that ConfigurationOfOSProcess needs to be updated. The #ifNotNilDo: problem was fixed by Thierry Goubier in July 2017, so perhaps you are using an out of date version. Hopefully someone else can give you a better answer, otherwise I will try to follow up in a day or two. Dave > > * OSSubprocess loads via catalog browser and the following snippet > works (even though 64 bit): > > OSSUnixSubprocess new > ?????? command: 'zip'; > ?????? arguments: #('-r' '123.zip' 'zipme'); > ?????? redirectStdout; > ?????? runAndWaitOnExitDo: [ :process :outString?? | > ?????? ?????? outString inspect > ?????? ] > > So is it ok to use OSSubprocess with 64 bit even though documented as 32 > bit only ? (here: > https://github.com/pharo-contributions/OSSubprocess#installation) > > * LibC uniqueInstance system: 'zip -r 123.zip zipme/' > ... works, but I don't know if its the right tool for this. > > Is there somewhere more info on which tool to use for which use case ? > > Thanks in advance! > > Albrecht > > PS.: I need to use zip as os process only because of this issue: > https://github.com/pharo-project/pharo/issues/2584 >

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Pier3 & content management
by Albrecht Baur Feb. 19, 2019

Feb. 19, 2019

Hey, what is the status of Pier3 + Pier3AddOns ? -> Seems to me that it is discontinued since Pharo 5, right ? I'm asking because I look around to see if there is a project usable as a starting point of a small web content management module for seaside (nothing too complicated / fancy). Is there something besides Pier that goes into this direction ? Thanks for hints, Albrecht

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OSProcess / OSSubprocess / LibC uniqueInstance
by Albrecht Baur Feb. 19, 2019

Feb. 19, 2019

I need to execute OS commands from within a x64 pharo 7.01 image on centos7 (for example: 'zip -r 123.zip zipme/'). I found these 3 tools: OSProcess, OSSubprocess, LibC uniqueInstance But I did not find any docu on which one to use for which use case. * OSProcess is in the catalog browser but fails loading because of ByteArray>>ifNotNilDo: -> So OSProcess is not to be used with p7 ? * OSSubprocess loads via catalog browser and the following snippet works (even though 64 bit): OSSUnixSubprocess new Â Â Â command: 'zip'; Â Â Â arguments: #('-r' '123.zip' 'zipme'); Â Â Â redirectStdout; Â Â Â runAndWaitOnExitDo: [ :process :outStringÂ | Â Â Â Â Â Â outString inspect Â Â Â ] So is it ok to use OSSubprocess with 64 bit even though documented as 32 bit only ? (here: https://github.com/pharo-contributions/OSSubprocess#installation) * LibC uniqueInstance system: 'zip -r 123.zip zipme/' ... works, but I don't know if its the right tool for this. Is there somewhere more info on which tool to use for which use case ? Thanks in advance! Albrecht PS.: I need to use zip as os process only because of this issue: https://github.com/pharo-project/pharo/issues/2584

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Re: [Pharo-users] [Pharo-dev] About Iceberg
by Damien Pollet Feb. 19, 2019

Feb. 19, 2019

ð On Tue, 19 Feb 2019 at 10:06, Hilaire <hilaire(a)drgeo.eu> wrote: > I join your thank you note, although I only use one half, the tonel > part, it is pleasant to be able to commit to file base repository and > use related tools. > > Le 19/02/2019 Ã 09:50, Sven Van Caekenberghe a Ã©crit : > > This is a thank you note about Iceberg. > > -- > Dr. Geo > http://drgeo.eu > > > > -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

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Pharo 7: Problems with the new file chooser UI
by Offray Vladimir Luna CÃ¡rdenas Feb. 19, 2019

Feb. 19, 2019

Hi, While I'm migrating Grafoscopio to Pharo 7 I get a deprecation warning telling me that I need to change the previous code for choosing a file from the UI, but now when I proceed as advised (using |chooseExistingFileReference: title extensions: exts path: path|). It returns a |FileReference| but all the paths are referred to the place where the running image is located, instead of the place where the selected file is located. For example if you run: [1]~~~~ (FileLocator documents / 'test.ston') ensureCreateFileÂ writeStreamDo:Â [:stream | STON put: (Rectangle center: 10@10 extent: 100@50) onStream: stream ]. ~~~~ You will get a file on your Documents folder called test.ston, but If I choose that file using: [2]~~~~ file := UIManager default Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â chooseExistingFileReference:'Choose a file' Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â extensions: #('ston') Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â path: FileLocator documents. ~~~~ and I choose the "test.ston" file created at [1], Pharo tells me that the file is located in the same place as the running image, instead on my Documents folder. Am I missing something? Thanks, Offray

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Should epicea help me recover changes in a system crash?
by Tim Mackinnon Feb. 19, 2019

Feb. 19, 2019

Hi - Iâve got mixed experiences with epicea - having had a few image seg faults recently its presented some of my changes and let me recover them. However just now, I had been working for an hour and my whole laptop went black (and then had the apple logo). I took the opportunity to apply the latest HighSierra updates (it has been a while) - but when I relaunched my image - epicea detected missing code however what it shows me is nothing like the changes I had recently made - it just showed me a merge change? Is it possible that if Iâm on the wrong branch - it wonât show me changes I made recently? I find Iâm kind of missing the old changes text file (which we say we are getting rid of) as at least it let me see an historic account of what I had done - as now things are a bit all of over the place (do-its you have to find in the playground history) and epicea is supposed to show the rest - execpt it doesnât appear to do so? Tim

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Measuring memory usage
by sergio ruiz Feb. 18, 2019

Feb. 18, 2019

Wondering if my image is dying due to memory usage. How would I go about getting a realistic measurement? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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Calypso documentation? Or understanding menu building
by Tim Mackinnon Feb. 18, 2019

Feb. 18, 2019

Is there any documentation on Calypso application contexts? I am trying to add a menu item to a package tag (the bit underneath a package - which I often call a sub-package). Iâve specified: ^CmdContextMenuActivation byItemOf: ClyQueryMenuGroup for: RPackage asCalypsoItemContext But that puts my menu on the package and not the tag - and if I use the inspect extra menu in calypso, I get what looks to be something that could help me determine what I want but Iâm struggling to understand what ClyTaggedClassGroup does, and what a context is all about. Has anyone else played around with this at all? Ideally I want to have a menu appear on all the tags underneath a particular package - and possibly including that package (or maybe not - I havenât decided as I want to try it in the wild). While Iâm at it - I have quite understood how to create submenuâs either - as Iâd like to have several commands all as sub items of a menu item âExercismâ. Tim

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[PharoRemote] View remote Transcript
by sergio ruiz Feb. 18, 2019

Feb. 18, 2019

Hi, all.. Is it possible to use PharoRemote to watch the remote siteâs Transcript? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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Pharo Image with Seaside dies without any clues
by sergio ruiz Feb. 18, 2019

Feb. 18, 2019

Hi, all. My seaside image seems to run for an indeterminate amount of time here and there, then just stops running without writing to PharoDebug. How do I go about debugging the application crash? Is there another log somewhere? It looks like there are other (path) issues when the the image starts up, though.. the initial error log looks like: https://gist.github.com/sergio101/8ac04fe5db4786c36fa3bf795807da9a Iâm not sure these errors are related to the image just randomly crashing here and there. Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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Aggregation framework in MongoTalk?
by phil＠highoctane.be Feb. 18, 2019

Feb. 18, 2019

Is there anyone using the aggregation framework of MongDb through MongoTalk? It uses the aggregate() command, so I was wondering if this could be supported out of the box or if there is a need for an additional Operation. TIA Phil

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[TelePharo] Error in remote playground..
by sergio ruiz Feb. 18, 2019

Feb. 18, 2019

Hey, all.. I am now able to connect to my remote image, but I am having one more issue. When opening a remote playground and trying to manipulate objects, i am getting: ideas? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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Bloc Tutorial
by Richard Kenneth Eng Feb. 18, 2019

Feb. 18, 2019

I'm following the tutorial in the MemoryGame booklet. When I run the game and click on any square, I get: The method BlBaseAnimation>>#startOn: called from MgCardElement>>#onFlippedFace has been deprecated. Use BlElement>>#addAnimation: The tutorial is out of sync. How can I proceed? Is there another way to learn how to use Bloc?

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Monticello diff between image and tonel repo
by Hilaire Feb. 18, 2019

Feb. 18, 2019

Hi, I think I already report it but I still see this issue. From Monticello when I request changes between image and my tonel repo I got wrong diff report.Â It is a bit scarry. Will code be lost? You are not sure about what really change. Or do I misunderstand something? See screenshot Hilaire -- Dr. Geo http://drgeo.eu

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Working VM for OS X for Pharo 7
by Hilaire Feb. 17, 2019

Feb. 17, 2019

Hi, Where is it possible to get a working OS X VM for Pharo7 ? Accoring to my test, the VM linked at http://pharo.org/download as error with a libgit plugin (same for linux VM btw) Thanks Hilaire -- Dr. Geo http://drgeo.eu

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Pragma "only for place of definition", is there one?
by Herby VojÄÃk Feb. 16, 2019

Feb. 16, 2019

Hi! I'd just like to know if there is some pragma (eg. <onlyForMe>) which would say to a (class-level) method only to use the code in the case self is method definition class, otherwise just delegate to super. I only see it useful in class-side `initialize` method, as in: Foo class >> initialize self == Foo ifTrue: [ registry := Dictionary new ]. ^ super initialize would be Foo class >> initialize <onlyForMe> registry := Dictionary new Asking because I look for a way to easily subclass JS classes in Amber and such pragma would be useful in such cases, and since Amber treats Pharo as a reference, asking for the name of the pragma if there is one. Thanks, Herby

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How do I find the RPackageTag of a class?
by Tim Mackinnon Feb. 16, 2019

Feb. 16, 2019

Iâm trying to understand how RPackage and RPackageTag work in Pharo7? It seems different than Pharo6 at least with Nautilus (vs Calypso) - as previously the Nautilus UI gave me the RPacakgeTag, and I could just work with that. Calypso doesnât seem to give me the tag object, but if I have a known class and I want to know its RPackageTag I canât see how you do it? It all seems rather messyâ¦. I can ask a class for its category - which just gives me a symbol of the form âmypackage-tagnameâ, and if I ask a class for its package, it will give me an RPackage(myPackage) - but that RPackage has a set of RPackageTags which just use the tagname (so not prefixed with "mypackage-â)? So am I really supposed to split the category name on â-â myself, and then select the correct RPackageTag? If I look at the RPackageTag tests - they all seem to use hard coded values and so donât really show you how you deal with the question above? It really seems quite messy? I naively thought that if I wanted a browser extension to deal with a selected package tag - and file out some classes in that tag (for exercism) - I could easily get the RPackageTag from any class and then use it? Tim

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Quality assistant
by Hilaire Feb. 16, 2019

Feb. 16, 2019

Hi How to turn off the quality assitant in the calypso browser? I don't find anymore the option in the settings browser. Hilaire -- Dr. Geo http://drgeo.eu

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Stability of Pharo 7 vs 6?
by Tim Mackinnon Feb. 15, 2019

Feb. 15, 2019

Iâm not sure if this is born out by others - but Iâm finding that Pharo 7 is a bit less stable than Pharo 6 - Iâm seeing quite a few seg-faults where the vm dies and terminates - both when the image is left running for a while, but also in fresh images where I do an Iceberg load of my projects. Iâve also seen a lot of weird things like corrupted fonts and keyboard focus/cursor keys not working properly. >From memory - I saw a lot less of this in Pharo 6 when I first moved to it. Possibly my usage is a bit different (although Iâm not sure) - but in all the cases above Iâm using OSX (HighSierra - so the same Mac OS as Pharo 6) - with the 64bit vm and running full screen. One thing that seems to help (but this is an early empirical observation) - if I save my image to a new name - this seems to help. So Iâm wondering if there might be something in the build process that has changed and is causing some sort of instability? I havenât done this long enough to really comment - but from all of the above, having a Pharo.1.image seemed to stop my problems. Possibly Iâve been unlucky - but of 7 images Iâve used in the last 2 weeks - 5 of them have had issues. I did notice that half of these images were the rc1 build 1436 setup (as I hadnât noticed that the blessed 7.0 stable image has a different version number (previously, the last builds in PL Pharo 7 development - was the stable version - unless work then went forward for a Pharo 7.1. I liked to nab the dev version so that I know the build number to report it. I now see the about Pharo in the image also lists this number). Also some of my images were retrieved via zeroConf in the terminal (again, not sure if this makes a difference - but did that a lot with P6 too). This isnât a complaint per se - as we need to move the platform forward and forge new approaches. So I really mention it to try and help diagnose the issues - or possibly understand if Iâm doing something weird. Tim

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[ANN] P3 version 1.2
by Sven Van Caekenberghe Feb. 14, 2019

Feb. 14, 2019

Hi, There is a new release of P3, the modern, lean and mean PostgreSQL client for Pharo. https://github.com/svenvc/P3 Version 1.2 contains the following changes: - P3PreparedStatement is now joined by a polymorphic P3FormattedStatement working client side on text strings - P3PreparedStatement & P3FormattedStatement now share the same double dispatch mechanism to process argument binding - Added convenience methods #listDatabases #listSchemas & #listTablesInSchema: to P3Client - Added convenience methods #firstColumnData & #firstFieldOfFirstRecord to P3Result - Added dynamic ENUM support via #loadEnums in P3Client - Add support for the 7 geometric types POINT, CIRCLE, LINE, LSEG, POLYGON & PATH with corresponding objects P3Point, P3Circle, P3Line, P3LineSegment, P3Polygon & P3Path - Add support for the INTERVAL type with P3Interval object - Added P3Client>>#serverVersion accessor - Add support for BIT & VARBIT types with P3FixedBitString & P3BitString objects - Add TIMETZ support - Organised P3 package with tags - More & better documentation & unit tests https://github.com/svenvc/P3/releases/tag/v1.2 The quality of open source software is determined by it being alive, supported and maintained. The first way to help is to simply use P3 in your projects and report back about your successes and the issues that you encounter. You can ask questions on the Pharo mailing lists. Enjoy, Sven -- Sven Van Caekenberghe Proudly supporting Pharo http://pharo.org http://association.pharo.org http://consortium.pharo.org

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Status of XML Support's move to GitHub
by Sven Van Caekenberghe Feb. 14, 2019

Feb. 14, 2019

Hi, What is the status of XML Support's move to GitHub ? Many people were pro, has anything been done ? It would be very nice. Sven

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pathSegments of workingDirectory?
by David Richards Feb. 14, 2019

Feb. 14, 2019

Hi community, Consider: | file | file := FileLocator workingDirectory . file fullName . "==> '/Users/dr/Documents/Pharo/images/Study (Pharo 7.0 - 64bit stable)'" file pathSegments . "==> #()" How do we obtain path segments for the working directory? Is this an edge case where pathSegments does not return a semantically consistent value? Thanks David

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Traits for class methods?
by Konrad Hinsen Feb. 14, 2019

Feb. 14, 2019

Hi everyone, A quick question: is it possible to use traits to define class methods? For example, could the popular singleton pattern consisting of the three class methods #uniqueInstance, #new, and #reset plus the instance variable uniqueInstance be packaged as a trait? Konrad.

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Boostrap for seaside : incorrect JQuery version
by Dominique Dartois Feb. 13, 2019

Feb. 13, 2019

Hi all I installed seaside + Bootstrap from the Â« Catalog Browser Â», following the tips at http://smalltalkhub.com/#!/~TorstenBergmann/ I run Pharo 7 64bits on MacOS. The demo doesnât react to the mouse clicks. In fact Firefox debugger showed an incompatibility between Bootstrap and JQuery versions : The JQuery Pharo library is 3.3.1 : Is it possible to correct this just by using an older library of JQuery (if I can find one)? Thank you --- Dominique Dartois

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Running test
by Hilaire Feb. 13, 2019

Feb. 13, 2019

Hi, I need some testing on Mac OS and Windows, Linux should be fine, of a new bundle for drgeo. It is there https://www.dropbox.com/s/z2acnw1yi77q4ps/DrGeo.app-19.03a.zip?dl=0 I just need to know if it running or not. Thanks Hilaire -- Dr. Geo http://drgeo.eu

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