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

XML support for pharo
by oswall arguedas July 16, 2018

July 16, 2018

Greetings community of pharo I have to process many XML files, to convert them to objects and incorporate them into a database and create an application in seaside. In pharo I have found XmlParser, however I have not found documentation to use it as best as possible. I do not know if there is another more appropriate tool. Please if possible and there are examples of common use of xml processing inform me. Thank you very much in advance Oswall

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Request for Windows test
by Hilaire July 15, 2018

July 15, 2018

Hi, A Windows user reported to me difficulty to start Dr. Geo. Although I had success to run it in a Windows system, I will be glad if some of you would mind testing it on their windows system, and report to me success or failure along the used Windows system. -> http://www.drgeo.eu/download Thanks a lot Hilaire -- Dr. Geo http://drgeo.eu

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Pharo 6 Freetype plugin stopped working after Windows update
by webwarrior July 15, 2018

July 15, 2018

LoadLibrary(FT2Plugin.dll) (998: Invalid access to memory location. ) Windows 10. Win32 built on May 31 2017 03:09:04 GMT Compiler: 5.4.0 VMMaker versionString VM: 201705310241 Tried latest stable VM - same error. Pharo 7 works normally. -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Instance of IceUnknownBranch did not understand #id
by HernÃ¡n Morales Durand July 15, 2018

July 15, 2018

I wonder if anyone could help here. I am installing a BaselineOf in Pharo 6.1 (Windows) using a script like the following: Iceberg enableMetacelloIntegration: true; remoteTypeSelector: #httpsUrl. Metacello new baseline: 'MyProject'; repository: 'github://user/repo/src'; load. Unfortunately the repository is private and I cannot share the URL. When I open the Iceberg UI all downloaded packages has "Local repository missing" (see screenshots). To fix this currently I assign manually the local directory (assuming they were correctly downloaded). Also I tried adding repository information in the #baseline: method baseline: spec <baseline> spec baseline: 'MyProject' with: [ spec repository: 'github://user/repo' ]. .... Any idea how could I debug this? Cheers, HernÃ¡n

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gRPC for pharo?
by Holger Freyther July 15, 2018

July 15, 2018

Hey, I have collected some experience using gRPC[1] and would like to make clients and be a server from Pharo. After digging into the gRPC implementation it seems feasible[2]. Would someone be interested in collaborating on an implementation? cheers holger [1] An RPC framework using HTTP2 and sending Google Protobuf serialized data. It is used by etcd (distributed key value store, master election), apparently containerd (of docker) and the list is probably increasing. It has interesting load balancing support... [2] Wrap the C-API with with FFI, modify the gRPC protobuf compiler to generate Pharo classes with slots for the native types, create a polling Pharo Process to pull the completion_queue. With ThreadedFFI we could have lower latency and have a blocking call on the completion queue.

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Email Google API for pharo
by oswall arguedas July 14, 2018

July 14, 2018

Greetings community of pharo I am working with the google API to process gmail emails, read, modify, archive, send. Is there any way with pharo ?. Thank you very much in advance Oswall

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Smalltalks 2018 registration and talk submissions is now open!
by Gabriel Cotelli July 13, 2018

July 13, 2018

We invite you to join us at Smalltalks 2018 <https://smalltalks2018.fast.org.ar/> in Salta, for the 12th free conference on Smalltalk based technologies, research and industry applications. Registration CLICK HERE TO REGISTER <https://docs.google.com/forms/d/e/1FAIpQLSei4VFOeoC-GSZR2ygLJaGelOvoqX6th5l…> No payment is required to attend nor to present a talk. We do accept donations from willing individuals and companies to keep our activities free. When & Where The conference will be held from October 31 to November 2 at Universidad Nacional de Salta <http://di.unsa.edu.ar/>, in Salta, Argentina. Workshops are also planned at the same site on October 29 and 30. Participation For the talks this year, weâd like to offer a wide range of subjects of interest to our attendees. Weâd like to encourage students, researchers and industry experts to share with us their stories and expertise on different Smalltalk inspired languages, frameworks and methodologies. Whether you have developed or researched an architecture, component or product, that is based on Smalltalk, or that could offer new insights to Smalltalk developers, we invite you to speak at this yearâs conference. We are also interested in hearing about your experiences with the newest technologies and how they compare to Smalltalk equivalents. Is it easier to implement a Blockchain in Smalltalk than in Scala? Is Pharo offering the required tools to work with Deep Learning? Can Gemstone outperform SQL when working with image processing? SUBMIT YOUR TALK HERE <https://docs.google.com/forms/d/e/1FAIpQLSd9dW7M3GZJHIpbIGclmoQs9Z8QgDUAqXf…> Traveling During 2018, AerolÃneas Argentinas <https://www.aerolineas.com.ar> is the official transporter for Smalltalks 2018. A 10% discount is available for airplane tickets to attend the conference: 1. Go to Aerolineas Argentinas conferences <http://ww1.aerolineas.com.ar/arg/main.asp?idSitio=AR&idPagina=161&idIdioma=…> site 2. Choose your origin and use SMTKS as promo code 3. Follow the instructions on the page This discount is valid for all tickets (tourist or executive class) with destination to Salta, arriving on or after October 24, and departing on or before November 7. The origin city can be any in Argentina, and also Madrid, Miami, New York, Rome, AsunciÃ³n, BogotÃ¡, CancÃºn, Curitiba, Florianopolis, Lima, Montevideo, Porto Alegre, Punta Cana, Punta del Este, RÃo de Janeiro, San Pablo, Salvador de BahÃa, Santa Cruz de la Sierra or Santiago de Chile. Legal disclaimer: AerolÃneas Argentinas as official transporter is not responsible for the organization, execution nor any other activity related to the conference. Scholarships As part of our vision, we aim to support people interested in participating in Smalltalk-related conferences, to generate a stronger community that can continue our work in the future. If you are a university student and require financial assistance to attend the conference, we encourage you to contact us <info(a)fast.org.ar>. We can offer travel and lodging funds to help you be part of this yearâs conference.. Support FAST FAST is a non-profit organization, funded by the donations of organizations and individuals. This support allows us to keep the conference free, every year, and to help students and distinguished speakers to attend. You can show your support at: https://smalltalks2018.fast.org.ar/donations Exclusive conference T-Shirts will be provided to those who donate before September 27th. Join us with your assistance, your presentations and your support. Help us continue to build this great community. See you in Salta! Follow us on Twitter (@fast_arg <https://twitter.com/search?f=tweets&vertical=default&q=%40fast_arg>) and Facebook (/fundacionargentinadesmalltalk <https://www.facebook.com/fundacionargentinadesmalltalk/>) to keep up to date with news and announcements.

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Pharo TechTalk at 5pm (UTC+2)
by Serge Stinckwich July 12, 2018

July 12, 2018

I will start my techtalk at 5pm (UTC+2) about Pharo&Tensorflow: https://association.pharo.org/event-2973748 on Youtube live: https://www.youtube.com/channel/UCtelfhEzvzvsNjXrGesm2fA Questions on Discord, channel #techtalk: http://discord.gg/Sj2rhxn Thank you. -- Serge Stinckwich UMI UMMISCO 209 (SU/IRD/UY1) "Programs must be written for people to read, and only incidentally for machines to execute."http://www.doesnotunderstand.org/

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Naming parameters - conventions?
by Tim Mackinnon July 12, 2018

July 12, 2018

Hi everyone, something Iâve meant to ask over the years, as Iâve seen lots of variation and was taught something else in the day... What is the suggested way of naming parameters? I was taught {âaâ/âanâ}DataType, so it would be: #name: aString Which works ok (although falls apart if you refactor as the tools donât interpret it - although I guess could be improved to do so) However often I find myself wanting to communicate a bit better as in: #name: fullNameString Which isnât strictly a datatype (and I tend to leave out the a/an when I do this). But it feels a bit off piste and it does make me consider whether my selector is named badly and should be: #fullName: aString Which takes me back to the convention I learned long ago. This said however, we often need to match similar #on:do, #in: generic selector names and then itâs not always obvious the intent of parameter. Any thoughts to share? I ask because for exercism, we should try and set a good example. Tim Sent from my iPhone

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Thoughts on mini Smalltalk exercises
by Tim Mackinnon July 12, 2018

July 12, 2018

Hi - Iâm trying to help Sam kickstart Pharo working Ian the exercism platform. For those less familiar, exercism is a platform with a series of exercises that users/students âcheckoutâ and then run a test to guide them through completing the code to then progress to the next challenge. There is also the ability to comment on each otherâs progress and see examples of otherâs solutions. Most languages are more traditional file based examples, so it would be nice to have Smalltalk as something a bit different. Although we think Tonel 2 will be an excellent vehicle for participating alongside other languages as it helps us fit in a little easier (nice how all our initiatives are coming together to make this easy). As you can imagine, exercises start out very simple and then increase in complexity. My question however, is about the early exercise like HelloWorld, LeapYear etc. These tend to be single method problems of just a few lines, requiring no instance variables (this all comes later). Iâm wondering about peopleâs thoughts on whether we should introduce early Smalltalk examples as just class methods and later introduce instance methods and âclass constructor methods â? Or is this more confusing for students? Essentially we are battling with the familiarity of the C âmainâ method - and looking at python and ruby solutions, they initially start with no objects and just main style methods. E.g. hello world can be simply: HelloWorld sayHello. vs HelloWorld new sayHello. I can see proâs/conâs either way - but wondering what others think. Tim Sent from my iPhone

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Which command-line handlers do you use most?
by Damien Pollet July 11, 2018

July 11, 2018

Hi all, I'm starting to port / reimplement existing command line handlers using Clap. There's a dozen, but I wonder which ones are the most relied upon, because it's a good opportunity for refactoring the command line API as a whole and simplifying it or at least making it more orthogonal. For instance I discovered there is a "perform" command, which is sort of redundant with the "eval" one. Similarly there are both a "configuration" and a "metacello" handlers which seem to have the same exact purposeâ¦ Since Clap can exist besides the current command-line handlers, we can have a deprecation period to minimize breakage and leave time for people to adapt before we kill old command line handlers for real. -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

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Zinc + HTTPS does not check for self signed certificates.
by JuliÃ¡n Maestri July 11, 2018

July 11, 2018

tl;dr Querying an HTTPS site with a self signed certificate does not fail / raise an exception (and it should). Long: I'm trying to use client and server HTTPS validation with Zinc on Pharo. I prepared: a self signed CA certificate, and server and client certificates signed by the same CA. I set up an Apache server with a site over HTTPS requiring client authentication. This worked (had to install the client certificate on my browser to access the site). After some failed attempts, i found this link <http://forum.world.st/How-to-use-HTTPS-SSL-with-Zinc-tp4952461p4952507.html> which was very helpful and successfully managed to authenticate a *ZnClient* with the Apache Server. This is the small snippet, only configuring the full path to the client certificate is enough (getting the right format for the pem file is another thing, it must have both certificate and key inside). | result | Transcript clear. result := ZnClient new certificate: 'certs/client.pem' asFileReference asAbsolute pathString; logToTranscript; url: 'https://my-secure-site'; get. Transcript crShow: result. That worked on linux, windows still fails i don't know why. Trying to make it work on linux, i started checking without client authentication, and realized that Zinc was not complaining about the server certificate not known by a trusted CA. I changed the server certificate with a new one, self signed to make the case simpler, and Zing still did not complain. This is a problem, it should either fail, or let me configure it to fail when the server is not trustworthy. I'm not sure if it's Zinc, Zodiac or the SqueakSSL plugin. Am i doing anything wrong? Is there a configuration option which i can not find? If necessary, i can (temporarily) set up a public server with a self-signed certificate to help reproduce the case (the server i'm currently using is on a local network). PD: Sadly for this particular project (reverse proxy) this would be a no go, i can not use Pharo :(

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Tonel class comments
by Guillermo Polito July 11, 2018

July 11, 2018

Hi all, Since people have been asking how to use Tonel, I've took a look at it and have written down two class comments for both the reader and the writer. I'll push them to Tonel and schedule soon a patch release with it. Here are the class comments so people can see them/discusses them. Please, report any enhancements as pull requests in git@github.com:pharo-vcs/tonel.git ! TonelReader I'm a monticello reader for tonel format repositories. I read - a package per directory - a class per file - a set of extensions to a single class per file (for example, all extensions of a package to String will be in a single file) I'm created on a file reference to a directory where the package will be read and the name of the package to read. [[[ TonelReader on: 'someDirectoryWithTonelPackages' asFileReference filename: 'MyPackageName' ]]] My main method is - ==#definitions== reads and parses the tonel file, returns a list of monticello definitions. - ==#snapshot== returns a monticello snapshot with the read definitions. - ==#version== returns a monticello version with the read snapshot. !! Implementation details The monticello versions I return do have artificial information. Since I'm just meant to read versions from a directory, this directory has no information such as commit message, commit time, author, or ancestors. Check the method ==#loadVersionInfo== for more information. ! TonelWriter I'm a monticello writer for tonel format, writing - a package per directory - a class per file - a set of extensions to a single class per file (for example, all extensions of a package to String will be in a single file) I'm created on a file reference to a directory where the package will be written. [[[ TonelWriter on: ('someDirectory' asFileReference ensureCreateDirectory) ]]] My main methods are - ==#writeVersion:== that receives as argument a monticello version to write, from where I'll extract the corresponding monticello snapshot. - ==#writeSnapshot:== that receives as argument a monticello snapshot to write, from where I'll write all the contained definitions. !! Implementation details Notice that while writing, if the written package/snapshot already exists in the directory I'll overwrite it (i.e., remove it and recreate it). -- Guille Polito Research Engineer Centre de Recherche en Informatique, Signal et Automatique de Lille CRIStAL - UMR 9189 French National Center for Scientific Research - *http://www.cnrs.fr <http://www.cnrs.fr>* *Web:* *http://guillep.github.io* <http://guillep.github.io> *Phone: *+33 06 52 70 66 13

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Logging system
by Miguel Campusano July 10, 2018

July 10, 2018

Hello guys, I want to capture the logs of a Pharo program to visualize them, but I do not find something like Python to log stuffs with more info than the string itself (such as severity or source of the log) ( https://docs.python.org/2/howto/logging.html) Is there a standard tool for logging in Pharo already in use? Bests, Miguel

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12 Jul Pharo TechTalk: Tensorflow
by Marcus Denker July 9, 2018

July 9, 2018

Pharo TechTalk: Tensorflow A regular chat about Pharo. Happens on Discord. The Tech talks are open to both members and non-members! Topic: Machine Learning with TensorFlow and Pharo https://association.pharo.org/event-2973748

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Pharo 7 and shortcuts
by Norbert Hartl July 8, 2018

July 8, 2018

Maybe I missed an important discussion but as Iâm trying pharo7 now and I wonder about the keyboard shortcuts. Wasnât the old agreement moving to the multiple keys? So browsing senders with CMD-bn instead of the old CMD-n? What I find really confusing is that the shortcut keys in the menu are uppercase but the shortcut is lowercase. This does not look like an improvement to me. Any hints are highly appreciated. Norbert

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Roassal2 in Pharo 6.1 (Win) 137 tests fails
by HernÃ¡n Morales Durand July 8, 2018

July 8, 2018

In a clean Pharo 6.1 (Windows 8) I loaded Roassal2 with the following spec in a baseline: spec project: 'Roassal2' with: [ spec className: #ConfigurationOfRoassal2; versionString: #stable; repository: 'http://www.smalltalkhub.com/mc/ObjectProfile/Roassal2' ]. But many Trachel tests fails because of "External module not found" error (Screenshots attached). May be Roassal2 is broken on Windows? I tried loading Roassal2 from the Catalog browser and the same 137 tests fails. Any idea what could be missing? Cheers, HernÃ¡n

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Pharo stable version with git support
by dario.trussardi＠tiscali.it July 7, 2018

July 7, 2018

Ciao, i'm interested to port all my code to new Pharo version that manage git support. I found information in pharo.org news, it talk of Pharo 6.1. But it run only on macOS 64bits o i can run it on Linux Ubuntu 16.04 LTS System? New information - update about it? Thank you for every consideration, Dario

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Some facts and figures about pharo gaining momentum?
by Andrei Stebakov July 6, 2018

July 6, 2018

Hi! Do we as a community have some proofs in numbers that the popularity of smalltalk grows? I saw some articles that have some proofs that smalltalk is on the rise, but for my presentation I'd like to back it up with some numbers if possible. You know, it's one thing when you preach to the choir but quite another when you talk to some die-hard Java or JavaScript devs! Any ideas about some great convincing material is also very welcome!

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[ANN] New Academic Partner: ENIT
by Marcus Denker July 5, 2018

July 5, 2018

[ANN] New Academic Partner: ENIT The Pharo Consortium is very happy to announce that ENIT has joined as a Academic Partner. About - ENIT Ecole Nationale d'ingÃ©nieurs de Tarbes: http://www.enit.fr - Pharo Consortium: http://consortium.pharo.org The goal of the Pharo Consortium is to allow companies and institutions to support the ongoing development and future of Pharo. Individuals can support Pharo via the Pharo Association: http://association.pharo.org

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Its too hard to contribute to the Iceberg wiki
by Tim Mackinnon July 5, 2018

July 5, 2018

Ok - my love affair with Github ends at the wiki - what a load of $%$%^$%â¦ there is no sane and easy way to fork a wiki, make some changes and then submit a PR. (how the hell did they get into that state?). Can we agree to scrap the wiki Iceberg wiki and just have a longer readme.md (with sections of the current wiki?). Or if someone can explain easy instructions for both me (as a contributor) and the admins of iceberg then Iâm all earsâ¦. If not - Iâll submit a PR with my subtle changes to the readme. Tim

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Need help to get a list of Pharo projects with tests
by Julien July 5, 2018

July 5, 2018

Hello Pharo community, I am currently working on detecting rotten tests in Pharo projects. Rotten tests are defined as test methods containing one or many assertions in their source code but one or many of these assertions are not executed when the test is run. To have more details on the subject, you can check the research report related to our first definition of these tests freely available on HAL [1]. In this context, we built a test analyser which, given a Pharo package containing tests, finds rotten tests [2]. This analyser is still under development. We would like to extend the experiment of our research report [1] and to analyse more projects in order to get a better understanding of rotten tests. To do that, we need your help. You can help us in two ways: 1. Answer this email with links to one or many open-source Pharo projects containing tests. 2. If you want, provide us private projects or, at least, run our analyser on these private projects and give us back the results. If you want to help us with the second option, send me a mail directly at julien.delplanque(a)inria.fr <mailto:julien.delplanque@inria.fr>. Thanks in advance. Regards, Julien Delplanque Links: [1]: https://hal.archives-ouvertes.fr/hal-01819302 <https://hal.archives-ouvertes.fr/hal-01819302> [2]: https://github.com/juliendelplanque/RottenTestsFinder/ <https://github.com/juliendelplanque/RottenTestsFinder/> --- Julien Delplanque Doctorant Ã lâUniversitÃ© de Lille http://juliendelplanque.be/phd.html Equipe Rmod, Inria BÃ¢timent B 40, Avenue Halley 59650 Villeneuve d'Ascq NumÃ©ro de tÃ©lÃ©phone: +333 59 35 86 40

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Code porting to Pharo 6.1-64
by dario.trussardi＠tiscali.it July 5, 2018

July 5, 2018

Ciao, i work to port some code from Pharo 4.0 to Pharo 6.1-64. My root class into Pharo 4.0 define the properties instance variable and some relative method: a) propertyAt: aKey ifAbsent: aBlock ^ self properties at: aKey ifAbsent: aBlock b) propertyAt: aKey ifAbsentPut: aBlock ^ self properties at: aKey ifAbsentPut: aBlock c) propertyAt: aKey put: aValue ^ self properties at: aKey put: aValue d)...... Now when i port this code into the Pharo 6.1-64 when compile the code the Behavior originalName method implement: ^ (( self isObsolete and:[ self name beginsWith: 'AnObsolete ............ where isObsolete TClass is: self propertyAt: #obsolete ifAbsent: false But my class implement a specific propertyAt: ifAbsent: method and the system generates errors and don't compile the code. Thank you for every consideration. Dario

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do-it or inspect-it in the spotter search bar?
by PAUL DEBRUICKER July 5, 2018

July 5, 2018

I was feeling lazy was wondered if it would be possible to hit Cmd-D or Cmd-I in the spotter input field rather than opening a playground and typing something in then hitting it. E.g. 1 + 1 Cmd-I would open an inspector on the number 2 After looking at GTSpotter>>#spotterFor... methods I couldn't figure out how to make it happen in the half hour I had to spend on it. I recognize opening the playground is Cmd-O Cmd-W but I just open the spotter ~50x as often as a new playground so the muscle memory isn't there. If I could do quick one-liners in the spotter then the playground would get opened even less often.

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July 4, 2018

The Pharo Consortium is very happy to announce that University of YaoundÃ© 1 has joined as a Academic Partner. About - University of YaoundÃ© 1: http://www.uy1.uninet.cm - Pharo Consortium: http://consortium.pharo.org The goal of the Pharo Consortium is to allow companies and institutions to support the ongoing development and future of Pharo. Individuals can support Pharo via the Pharo Association: http://association.pharo.org

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