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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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