August 2018 - Pharo-users - lists.pharo.org

Project based learning and Dynabook
by Hilaire Aug. 29, 2018

Aug. 29, 2018

Hi, Some though on the topic http://blog.drgeo.eu/post/2018/Project-based-learning Hilaire -- Dr. Geo http://drgeo.eu

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How do I get ZeroMQ working?
by H. Hirzel Aug. 29, 2018

Aug. 29, 2018

Hello I installed JupyterTalk [1]. With it comes a ZeroMQ implementation [2]. This was done on Ubuntu 18.04.1 (Bionic Beaver, 64bit). However the ZeroMQ tests all fail. I assume there is something missing in the installation. How can I test that? Any other suggestions? Kind regards Hannes [1] JupyterTalk (https://github.com/jmari/JupyterTalk) is a Smalltalk kernel for the Jupyter notebook system: http://jupyter.org/ [2] ZeroMQ is a high-performance asynchronous messaging library, aimed at use in distributed or concurrent applications. It provides a message queue, but unlike message-oriented middleware, a ZeroMQ system can run without a dedicated message broker. https://en.wikipedia.org/wiki/ZeroMQ

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Dynabook and authentic learning pedagogy
by Hilaire Aug. 29, 2018

Aug. 29, 2018

Hi, A few notes on how Dynabook and authentic learning methodology could be related. http://blog.drgeo.eu/post/2018/Authentic-learning Hilaire -- Dr. Geo http://drgeo.eu

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Re: [Pharo-users] How best to cope with 2 editor/browser frameworks - Calypso and RubSmalltalkEditor
by Tim Mackinnon Aug. 29, 2018

Aug. 29, 2018

Denis - Iâve hopefully corruptly issues a PR on SystemCommands that shows how I approached this. I think its come out quite neat - but it will need the lower level Rubric based PR to be approved first (and then Calypso will have some useful jump to next keyword and intelligently widen selection commands). Tim > On 21 Aug 2018, at 20:12, Tim Mackinnon <tim(a)mackinnon.email> wrote: > > Thanks Denis - I figured that might be the case. As it turns out - the text selection protocol for the 2 editors is different so I can delegate that to a code block and put it in the > Code mode. > > Anyway Iâll figure it out and show you guys in a or (Iâm almost there) > > Tim > > Sent from my iPhone > > On 21 Aug 2018, at 17:16, Denis Kudriashov <dionisiydk(a)gmail.com <mailto:dionisiydk@gmail.com>> wrote: > >> Hi Tim. >> >> Currently commands are loaded after rubric. So RubSmalltalkEditor can't use them directly. >> >> 2018-08-21 13:03 GMT+01:00 Tim Mackinnon <tim(a)testit.works <mailto:tim@testit.works>>: >> AH - this makes sense then that SystemCommands is in its own Repo then (although all these tiny repos get quite difficult the track so you can understand where/how to contribute). >> >> This leads to another question - if I stick my commands for extend selection and jump to keyword in SystemCommands - is the load order such that RubSmalltalkEditor can safely access those commands (I know that for Calypso its ok, but can I reference those commands in the older RubSmalltalkEditor). Otherwise I will need to put the guts of my commands in the RubSmalltalkCodeMode which is shared by al editors (but it feels a bit too generic place for textMorph navigation stuff). >> >> Tim >> >> >> >>> On 21 Aug 2018, at 05:48, Esteban Lorenzano <estebanlm(a)gmail.com <mailto:estebanlm@gmail.com>> wrote: >>> >>> Hi, >>> >>>> On 20 Aug 2018, at 00:39, Denis Kudriashov <dionisiydk(a)gmail.com <mailto:dionisiydk@gmail.com>> wrote: >>>> >>>> >>>> 2018-08-19 23:12 GMT+01:00 Tim Mackinnon <tim(a)testit.works <mailto:tim@testit.works>>: >>>> Thanks Denis - I guess for now I can put the methods in RubSmalltalkEditor so that the playground can operate and then my Calypso plugins can also reference that code too (if class methods). >>>> >>>> Is the idea that playground will become part of Calypso too? >>>> >>>> No. >>>> What we can try to achieve is to reused Commander everywhere. So these SystemCommands will be reused by different tools. >>> >>> Yes, this is what we are targeting, to have a centralised command library that manages all system commands (so we do not need to duplicate code all around). >>> With enough time to implement, all tools will use same command mechanism. >>> >>> Esteban >>> >>>> >>>> If so, I can add the methods I need as an extension (although I guess this wonât work as the keyboard mapping for playground in one method and not extensible like Calypso which uses pragmas). >>>> >>>> Iâll do something as a pr and we can figure it out. >>>> >>>> Itâs worth saying, that for my Calypso plugins Iâve had to abuse your mechanism a bit as the simple #execute mechanism doesnât give me access to the text morph to control the cursor. I was able to do it though via the prompting mechanism (I just donât show any ui prompt). >>>> >>>> Tim >>>> >>>> Sent from my iPhone >>>> >>>> On 19 Aug 2018, at 14:28, Denis Kudriashov <dionisiydk(a)gmail.com <mailto:dionisiydk@gmail.com>> wrote: >>>> >>>>> Hi. >>>>> >>>>> I dont't know answer to your question. But for the note: >>>>> Calypso was needed to override existing way to spawn implementors/senders and so on. So I added subclass of RubSmalltalkEditor - ClyTextEditor which overrides required methods. >>>>> So if you will put new methods into the RubSmalltalkEditor then Calypso will be able to use them. >>>>> >>>>> 2018-08-19 16:55 GMT+01:00 Tim Mackinnon <tim(a)testit.works <mailto:tim@testit.works>>: >>>>> Hi Iâm trying to work out the best way to cope with the fact that we are in a hybrid place where the Playground is using an RubSmalltalkEditor but Calypso has its own mechanisms for editing code. >>>>> >>>>> I have commands that should/can work in both the playground as well as code method editor (in Calypso). >>>>> >>>>> Previously my code lived in RubSmalltalkEditor and Nautilus was using that too - but now Iâm not sure where to put some reusable methods that use RBParser and the AST to find the best place to position your cursor. >>>>> >>>>> I can make a class method on RubSmalltalkEditor and Calypso commands could reference that (but that feels wrong somehow). I could make some extension methods on RBParser and both places reference that - but then who should own the extension method (as I think RubSmalltalkEditor is lower level and Calypso is then loaded on top). >>>>> >>>>> Anyone have some good suggestions? >>>>> >>>>> Tim >>>>> >>>> >>> >> >>

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Re: [Pharo-users] [Moose-dev] Re: Centering edges over composites
by HernÃ¡n Morales Durand Aug. 29, 2018

Aug. 29, 2018

Hi Chris, I attached a screenshot of the desired result. It seems to me the problem is not where the arrow is connected, but the Tree Layout, which is positioning the "Test" label as if it would be the root of a tree with the svg figures as their leaves. I still don't get how to apply a vertical layout (not tree) to a RTCompositeShape, assuming that could be a reasonable solution. Cheers, HernÃ¡n 2018-08-28 18:25 GMT-03:00 Chris Cunningham <cunningham.cb(a)gmail.com>: > Hi, > I looks like the arrow is still centered on the shapes; it is just that the > 'shapes' are now composite shapes consisting of the text 'Test' and the > drawn/filled shape. > > What I think you want is a way to connect the arrows between the SVG > sub-shapes, correct? I am not sure (at all) how to do that. > > -cbc > > On Tue, Aug 28, 2018 at 12:04 PM HernÃ¡n Morales Durand > <hernan.morales(a)gmail.com> wrote: >> >> Attached screenshots just in case someone has a clue. >> Cheers, >> >> HernÃ¡n >> >> >> 2018-08-23 14:31 GMT-03:00 HernÃ¡n Morales Durand >> <hernan.morales(a)gmail.com>: >> > Hi, >> > >> > When connecting two composite shapes with RTEdgeBuilder, the connector >> > position loose its center over the connecting shapes. >> > >> > It's easier to explain with two scripts: >> > >> > This one looks good, the connector (RTArrowedLine) is centered: >> > >> > | view shapes myElems | >> > view := RTView new. >> > myElems := 1 to: 2. >> > shapes := (RTSVGPath new >> > path: 'm 3.96875,9.2604167 h 31.75 V 25.135417 C 22.489583,23.8125 >> > 17.197917,34.395833 3.96875,27.78125 Z'; >> > fillColor: Color red; >> > borderColor: Color black; >> > borderWidth: 1.2; >> > scale: 1.4) elementsOn: myElems. >> > view addAll: shapes. >> > RTEdgeBuilder new >> > view: view; >> > shape: (RTArrowedLine new >> > color: Color white; >> > yourself); >> > elements: shapes; >> > connectFrom: 1 to: 2. >> > RTTreeLayout new >> > verticalGap: 30; >> > horizontalGap: 30; >> > applyOn: shapes. >> > view inspect. >> > >> > However when adding a label in a composite, both label and arrow looks >> > shifted: >> > >> > | view shape shapes myElems | >> > view := RTView new. >> > myElems := 1 to: 2. >> > shape := RTCompositeShape new >> > add: (RTLabel new text: 'Test'); >> > add: (RTSVGPath new >> > path: 'm 3.96875,9.2604167 h 31.75 V 25.135417 C >> > 22.489583,23.8125 17.197917,34.395833 3.96875,27.78125 Z'; >> > fillColor: Color red; >> > borderColor: Color black; >> > borderWidth: 1.2; >> > scale: 1.4); >> > vertical; >> > yourself. >> > shapes := shape elementsOn: myElems. >> > view addAll: shapes. >> > RTEdgeBuilder new >> > view: view; >> > shape: (RTArrowedLine new >> > color: Color white; >> > yourself); >> > elements: shapes; >> > connectFrom: 1 to: 2. >> > RTTreeLayout new >> > verticalGap: 30; >> > horizontalGap: 30; >> > applyOn: shapes. >> > view inspect. >> > >> > Any idea how to align these shapes? >> > >> > Cheers, >> > >> > HernÃ¡n >> _______________________________________________ >> Moose-dev mailing list >> Moose-dev(a)list.inf.unibe.ch >> https://www.list.inf.unibe.ch/listinfo/moose-dev > > > _______________________________________________ > Moose-dev mailing list > Moose-dev(a)list.inf.unibe.ch > https://www.list.inf.unibe.ch/listinfo/moose-dev >

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Re: [Pharo-users] Centering edges over composites
by HernÃ¡n Morales Durand Aug. 28, 2018

Aug. 28, 2018

Attached screenshots just in case someone has a clue. Cheers, HernÃ¡n 2018-08-23 14:31 GMT-03:00 HernÃ¡n Morales Durand <hernan.morales(a)gmail.com>: > Hi, > > When connecting two composite shapes with RTEdgeBuilder, the connector > position loose its center over the connecting shapes. > > It's easier to explain with two scripts: > > This one looks good, the connector (RTArrowedLine) is centered: > > | view shapes myElems | > view := RTView new. > myElems := 1 to: 2. > shapes := (RTSVGPath new > path: 'm 3.96875,9.2604167 h 31.75 V 25.135417 C 22.489583,23.8125 > 17.197917,34.395833 3.96875,27.78125 Z'; > fillColor: Color red; > borderColor: Color black; > borderWidth: 1.2; > scale: 1.4) elementsOn: myElems. > view addAll: shapes. > RTEdgeBuilder new > view: view; > shape: (RTArrowedLine new > color: Color white; > yourself); > elements: shapes; > connectFrom: 1 to: 2. > RTTreeLayout new > verticalGap: 30; > horizontalGap: 30; > applyOn: shapes. > view inspect. > > However when adding a label in a composite, both label and arrow looks shifted: > > | view shape shapes myElems | > view := RTView new. > myElems := 1 to: 2. > shape := RTCompositeShape new > add: (RTLabel new text: 'Test'); > add: (RTSVGPath new > path: 'm 3.96875,9.2604167 h 31.75 V 25.135417 C > 22.489583,23.8125 17.197917,34.395833 3.96875,27.78125 Z'; > fillColor: Color red; > borderColor: Color black; > borderWidth: 1.2; > scale: 1.4); > vertical; > yourself. > shapes := shape elementsOn: myElems. > view addAll: shapes. > RTEdgeBuilder new > view: view; > shape: (RTArrowedLine new > color: Color white; > yourself); > elements: shapes; > connectFrom: 1 to: 2. > RTTreeLayout new > verticalGap: 30; > horizontalGap: 30; > applyOn: shapes. > view inspect. > > Any idea how to align these shapes? > > Cheers, > > HernÃ¡n

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Looking for a pharos/seaside developer based in Turkey (Istanbul)
by Pierre Durand Aug. 28, 2018

Aug. 28, 2018

Hello, I am looking for a pharo/seaside developer based in Turkey (Istanbul). Feel free to contact me Pierre

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Using ZnEasy getPng: with an octet-stream
by Andy Burnett Aug. 28, 2018

Aug. 28, 2018

Next step of my Asana adventure. In a browser https://s3.amazonaws.com/profile_photos/206785263586755.0mU1QMOxVZLp3WiRWhW… downloads a png. When I try ZnEasy getPng: with the same address, I get a walkback saying expected image/png actual application/octet-stream. Is it possible to handle this with ZnEasy, or do I have to use the ZnClient and handle the stream first? Cheers Andy

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Re: [Pharo-users] Adding an Authorization Bearer header via Zinc
by Andy Burnett Aug. 27, 2018

Aug. 27, 2018

Norbert said <<< You have a colon in the name of the header. I?m not sure zinc removes it. It could be a problem. >>> Ah, spot on. Apparently, we need the colon for Curl, but not for Pharo. Also, response setAuthorization turned out to be the best approach. For anyone searching this list, in the future, for Asana connectivity, my PoC is: tmp1 := ZnClient new. tmp1 request setAuthorization: 'Bearer <put your personal access token here>'; url: 'https://app.asana.com/api/1.0/users/me'. tmpJSON := NeoJSONReader fromString: tmp1 get.

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Adding an Authorization Bearer header via Zinc
by Andy Burnett Aug. 27, 2018

Aug. 27, 2018

I am building some pharo scripts to edit tasks in the Asana.com system. I have generated a Personal Access Token, and the terminal command of: curl -H "Authorization: Bearer 12345abc" https://app.asana.com/api/1.0/users/me Returns 200/ok, and the right data. However, the pharo commands tmp1 := ZnClient new. tmp1 headerAt: 'Authorization:' put: 'Bearer 12345abc'. tmp1 url: 'https://app.asana.com/api/1.0/users/me'. tmp1 get. Results in an authorisation error. I haven't tried using Zinc to access authenticated sites before, what am I doing wrong? Cheers Andy

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Roassal installation in Pharo 6.1 through the catalog?
by H. Hirzel Aug. 27, 2018

Aug. 27, 2018

Hello Installing Roassal in 6.1 through the catalog gives the message that it has not been tested for installation in 6.0. See screen shot. Is this the regular way to go for or is there a better installation script? Regards Hannes

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XAdES (BES) and XML DSIG signing and verification
by Petr Fischer Aug. 25, 2018

Aug. 25, 2018

Hello Smalltalkers! Has anyone tried to solve a subject in Pharo/Smalltalk? Thanks! pf

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Pharo 6.1 installation problem on Ubuntu 18.04.1 Bionic Beaver
by H. Hirzel Aug. 22, 2018

Aug. 22, 2018

Hello I'd like to install Pharo 6.1 in a new installation of Ubuntu 18.04.1 Bionic Beaver [1] I get a message ./pharo-ui Error. Could not determine platform's libc path for VM. Try forcing $PLATFORMLIBDIR in /home/user25/pharo6.1/pharo-vm/pharo, based on LIBC_SO. [2] Ubuntu 18.04.1 Bionic Beaver is a new installation. The only added sw is the Python anaconda distribution. https://www.anaconda.com/download/#linux Suggestions how fix this issue are welcome. Regards Hannes [1] http://releases.ubuntu.com/18.04/ [2] The installation sequence wget -O- get.pharo.org | bash ./pharo-ui Error. Could not determine platform's libc path for VM. Try forcing $PLATFORMLIBDIR in /home/user25/pharo6.1/pharo-vm/pharo, based on LIBC_SO. Please report what works to pharo [vm-dev] mail list. LIBC_SO= DISTRIB_ID=Ubuntu DISTRIB_RELEASE=18.04 DISTRIB_CODENAME=bionic DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS" NAME="Ubuntu" VERSION="18.04.1 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04.1 LTS" VERSION_ID="18.04" VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic UNAME=Linux Latitude2 4.15.0-29-generic #31-Ubuntu SMP Tue Jul 17 15:39:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux System seems to be 64 bit. You may need to (re)install the 32-bit libraries.

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Error in fresh image
by Jeff Gray Aug. 22, 2018

Aug. 22, 2018

I am trying to recover my project from a broken image, so thought I could get a fresh image and then import from the old changes file. I just downloaded and unzipped the Pharo Standalone for Windows. I unzipped it and copied the image and changes to my existing Pharo 6.1 folder. The first thing I see is this error: <http://forum.world.st/file/t160774/pharo.png> Should I try too get an older image file or will somebody look at fixing in a new version? -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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RDF
by Torsten Bergmann Aug. 21, 2018

Aug. 21, 2018

I remember an old discussion on RDF and Pharo: http://forum.world.st/RDF-Framework-and-Pharo-td3526849.html Just as an info and for the records: Now Christian Haider released [RDF] - an RDF/XML implementation in VisualWorks Smalltalk https://wiki.pdftalk.de/doku.php?id=rdf License is MIT. Maybe someone is interested in a port to Pharo and/or Squeak/Cuis.

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How best to cope with 2 editor/browser frameworks - Calypso and RubSmalltalkEditor
by Tim Mackinnon Aug. 21, 2018

Aug. 21, 2018

Hi Iâm trying to work out the best way to cope with the fact that we are in a hybrid place where the Playground is using an RubSmalltalkEditor but Calypso has its own mechanisms for editing code. I have commands that should/can work in both the playground as well as code method editor (in Calypso). Previously my code lived in RubSmalltalkEditor and Nautilus was using that too - but now Iâm not sure where to put some reusable methods that use RBParser and the AST to find the best place to position your cursor. I can make a class method on RubSmalltalkEditor and Calypso commands could reference that (but that feels wrong somehow). I could make some extension methods on RBParser and both places reference that - but then who should own the extension method (as I think RubSmalltalkEditor is lower level and Calypso is then loaded on top). Anyone have some good suggestions? Tim

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Unable to install Roassal2 on pharo7 64bits
by Federico.Balaguer Aug. 21, 2018

Aug. 21, 2018

Hello all, I need to install Roassal2 on Pharo7 64bits . I notice that there is a dialog warning about Roassal 2 not being tested on Pharo7 64bits. I wonder if someone was able to laod it I tried loading the stable configuration but it results making the image to close/quit. The image comes from the PharoLauncher's Pharo 7.0 development list. Is there a version of Pharo7 x64 that is known to work with Roassal2? Thanks! Federico -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Submit your Project to the ESUG Awards
by N. Bouraqadi Aug. 21, 2018

Aug. 21, 2018

Hi everyone! This is a reminder to submit your projects to the ESUG Innovation Technology Awards. It will be held on september the 10th as part of the ESUG conference in Sardinia (https://esug.github.io/2018-Conference/conf2018.html) Any Pharo Smalltalk-related project is eligible. All you need to do is provide me with few info and give a short demo during the awards session. I hope to hear from you soon, Noury

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don't understand why cascading doesn't work
by Gregg Williams Aug. 21, 2018

Aug. 21, 2018

I'm embarrassed to write about this. I've been playing with the code, reading docs, etc. for an hour: With a Transcript window open, executing any of the following lines (from a Playground): Transcript show: 1; ' '; 2; cr. Transcript show: 'a'; cr; 'b'. Transcript show: 1; cr; '2'. fails, after which is shown a pink box with the text 'Message expected ->'. I'm sure it's something simple. What am I missing? Thanks.

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Re: [Pharo-users] Gemstone as a service?
by Iwan Vosloo Aug. 20, 2018

Aug. 20, 2018

Hi Andy, On 18/08/2018 18:12, Andy Burnett wrote: > I was wondering if anyone offers GaaS? I would love to be able to just > focus on writing code, and leave the system management to others. > Gemstone does seem to offer a very complete package. We have one client for whom we are managing a fair number of GemStone servers and I am itching to do this "aaS". Being able to use the same for several clients would make it easier to spend more time and resources, hopefully making the offering better. I've been holding back on the idea though because I have no idea of knowing whether there is enough interest for something like this to make it financially viable. If people are interested, I'd also love to know what their requirements are: - how big are the systems they want to run ito the various machine resources and network resources needed? - how complicated the setup needs to be (we run a fairly simple setup, more flexible setups may be difficult to generalise)? - where to you prefer to locate servers physically, and do you require hot-standbys (perhaps in a different location)? - what do you require in terms of the process deploying new versions of your code to production? - ... or any other requirements? Regards Iwan --

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Re: [Pharo-users] Gemstone as a service?
by Iwan Vosloo Aug. 20, 2018

Aug. 20, 2018

Hi, On 18/08/2018 18:25, Tim Mackinnon wrote: > I was steered towards Digital Ocean which was really simple to setup and > very cheap. Although I think this is all heading towards kuberneties and > docker images as the end game. Although we are not using Docker and kubernetes currently, we've been eyeing them and hoping to grow in that direction too. Is there a problem with such an approach? Could it help if someone produced, say a set of usable docker containers for various gemstone bits? Regards Iwan --

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Re: [Pharo-users] Gemstone as a service?
by Andy Burnett Aug. 20, 2018

Aug. 20, 2018

James wrote: <<< Will you be coming to ESUG? Perhaps we could discuss this in more detail after my talk on Wednesday at 12:30 (https://esug.github.io/2018- Conference/conf2018.html <https://esug.github.io/2018- Conference/conf2018.html>). >>> Unfortunately not, so I will have to wait for the slides, and video. However, this does sound encouraging. Might GemTalk get into the business of offering GaaS? Perhaps through Heroku or similar. Cheers Andy

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Where (as in Git project) should Calypso browser source code commands live?
by Tim Mackinnon Aug. 19, 2018

Aug. 19, 2018

Hi - Iâve had a few changes lined up to try and help P7 be a little more IntelliJ like. But Iâm not sure what package my small extensions should live in? I used SycRenameTempCommand as an example - but it lives in a package called "SystemCommands-SourceCodeCommandsâ - however I canât see where that package is git versioned as when I browse the Pharo working copy, it doesnât appear. Is this some low level piece that hasnât been moved into git yet? My commands are - ExtendSelection (a keypress to intelligently widen the selection of selected code to aid refactoring or moving code around), and JumpToNextKeyword - a keystroke to intelligently jump you to where you can enter a code completed keyboard or block variable etc. This got me thinking - about where these should live - are they in the Calypso project - and would l do a PR there - or are they in Pharo and I create a PR there? Suggestions? Tim

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RubShoutStylerDecorator doesnotunderstand: #move:for:controller:
by Jeff Gray Aug. 19, 2018

Aug. 19, 2018

Hi all, I was debugging my seaside application yesterday. I saved and closed the image. Then when I opened Pharo tonight I got the RubShoutStylerDecorator error. If I close the error window another one immediately pops up. Any idea what I can do? -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Working with an entire project in git
by sergio ruiz Aug. 18, 2018

Aug. 18, 2018

Hey, all.. I was just checking in to see the progress of managing an entire project with git. The last I checked in, this was a work in progress. My current pet project consists of a handful of classes with maybe two handfuls of required packages. Is the entire metacello configuration being handled on github yet? I would like to work this into my workflow so that I can do something like: - Grab a fresh Pharo - Pharo.image ../scripts/setup-client-application.st where the setup script just grabs the Configuration and loads and starts a fresh project. 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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