July 2017 - Pharo-users - lists.pharo.org

Iceberg + github without github account
by Herby VojÄÃk July 21, 2017

July 21, 2017

Hello! I use Iceberg with metacelloIntegration: true to have gitlocal:// protocol available to load local git repos. Problem I encountered (while trying to load Mocketry) that Iceberg hijacks github:// protocol and it seems it needs ssh credentials that actually allows access to github. But I don't have (and don't plan to have, because reasons) a github account. For the moment I work it around this way (the script I use to build my work image): ---- BEGIN | hereRef | hereRef := Smalltalk imageDirectory asFileReference. (IceRepositoryCreator new location: hereRef; subdirectory: 'src'; createRepository) register. "BEGIN WORKAROUND" IceGithubRepositoryType class compile: 'type ^ ''github+rw'''. "Work around github:// needing access" "END WORKAROUND" Iceberg enableMetacelloIntegration: true. Metacello new baseline: 'Towergame'; repository: 'gitlocal:///', (hereRef / 'src') fullName; load. Towergame configure. Smalltalk snapshot: true andQuit: true. ---- END Questions: Is there some more canonical way to get there? Will Iceberg include something to make it easier to have readonly-github repos / integrate only gitlocal://? Thanks, Herby

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Why does debugger browse open on Object?
by Tim Mackinnon July 21, 2017

July 21, 2017

Hi - I've always meant to ask this question as it often catches me out. When you get a typical debugger on doesNotUnderstood: I find that typically I've muddled up a method name - so I want to quickly browse the receiver of my mistake and understand what methods it actually has that I can use. It seems that the browse button is exactly that, and the debugger helpfully shows MyClass(Object) doesNotUnderstand.... But browse actually opens on Object >>doesNotUnderstand: which while technically correct is not really that helpful. Why isn't there an easy way to open a browser on the real receiver of the message? Am I missing an obvious button, or is it really use Spotter and retype the name of the class? Interestingly - Create does the useful thing to create a method where you want? It seems so obvious, but most Smalltalks seem to adopt this approach? I guess I can add it - but surprised I have to really. Tim Sent from my iPhone

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In Praise of the Very Best Programming Language
by horrido July 21, 2017

July 21, 2017

My farewell article? https://medium.com/@richardeng/in-praise-of-the-very-best-programming-langu… <https://medium.com/@richardeng/in-praise-of-the-very-best-programming-langu…> -- View this message in context: http://forum.world.st/In-Praise-of-the-Very-Best-Programming-Language-tp495… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Zinc newbie question: How to get file metadata from Dropbox
by Johannes Brauer July 20, 2017

July 20, 2017

Hi! To download a file from Dropbox is easy: ZnClient new https; host: 'content.dropboxapi.com'; addPath: '2'; addPath: 'files'; addPath: 'download'; headerAt: 'Authorization' put: 'Bearer <my generated access token>'; headerAt: 'Dropbox-API-Arg' put: '{"path": "/demo.txt"}' ;get. But I cannot figure out how to get file metadata (https://www.dropbox.com/developers/documentation/http/documentation#files-g…) If I try the following (ZnClient new https; host: 'api.dropboxapi.com'; addPath: '2'; addPath: 'files'; addPath: 'get_metadata'; headerAt: 'Authorization' put: 'Bearer QfCCKhxI-HwAAAAAAAAGdeT916yqY4tkX3EN6EW2S3EMxYyv5Xky9LeCxuGi8_o7'; headerAt: 'Content-Type' put: 'application/json'; formAt: 'path' put: 'demo.txt'; post). I get the error message from Dropbox: Error in call to API function "files/get_metadata": Bad HTTP "Content-Type" header: "application/x-www-form-urlencoded". Expecting one of "application/json", "application/json; charset=utf-8", "text/plain; charset=dropbox-cors-hack". Probably I am using ZnClient wrongly. Johannes

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UK Smalltalk User Group Meeting - Monday, 31st July
by Giovanni Corriga July 20, 2017

July 20, 2017

The next meeting of the UK Smalltalk User Group Meeting will be on Monday, 31st July. We'll meet at a new venue The City Pride ( http://www.cityprideclerkenwell.co.uk/ ) at 7pm. If you'd like to join us, you can just show up at the pub. You can also sign up in advance at the meeting's Meetup page: https://www.meetup.com/UKSTUG/events/241876612/ . See you there!

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object serialization, STON & PharoJS
by Siemen Baader July 20, 2017

July 20, 2017

Hi all, Iâm trying to transpile the STON class to JavaScript with PharoJS to use it in a client side web application. The goal is it to retrieve object(graphs) from the server and deserialize them in the frontend via xhr. But PharoJS doesn't support thisContext, I think that's a limitation of the JavaScript VM. PharoJS raises "PjJavascriptTranspilationError - thisContext not supported. Found in Collection >> #toBraceStack:". I tried to add the <pharoJsSkip> pragma to the method in the hope that it will not be needed for my uses, but no luck. Is the use of thisContext needed in STON, can I avoid it? I had hoped to use STON because it is simple and well documented and unlike JSON handles object graphs and classes. What are my options? Alternatively, what else could I use to serialize objects? I'm already using Voyage & Mongo on the backend which deal with JSON internally, and I think Moose also has a serialization component. Using a JS library in the frontend is also an option if there is a Pharo implementation for its format as well. Thanks, Siemen

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Can anyone answer this?
by horrido July 20, 2017

July 20, 2017

Miles Fidelman (at Quora) and I were having an argument about the suitability of Smalltalk (Pharo) for large maintainable software projects. The problem is, I've never used Smalltalk in a commercial setting, esp. with respect to large projects. Without that experience, I am wholly unqualified to answer his response, which follows... *I just spent a little time looking at a couple of big projects that use(d) Smalltalk - JWARS & the Seaside web server. And I discovered that both have basically avoided the âlive coding environmentâ aspects of Smalltalk. JWARS incorporates a lot of access & configuration controls that limit who can change which parts of the system. Seaside seems to follow standard development processes - with a version control system, and formal releases. Which kind of reinforces what I see as issues with Smalltalk from a system building & maintenance point of view: 1) When everything is a work in progress, itâs impossible to manage a project, maintain deployed code (âwhat version do you have, what did you modify? clearly thatâs where the bug isâ), update things (interfaces change, updates overwrite local mods), etc. 2) The typical deployment model is to deploy a completely new virtual machine & environment. For some things (e.g., servers), that works - and seems to be the way of the world with containerization - but for other things (e.g., desktop applications), deploying an entire new environment for every patch is just a bit match. 3) Gross violation of âprinciple of least privilege.â Live code, particularly multi-user code, that can be modified by its users - now that is a surefire recipe for disaster.* -- View this message in context: http://forum.world.st/Can-anyone-answer-this-tp4955861.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Re: [Pharo-users] Problem to access the "book compilation farm"
by Cyril Ferlicot July 19, 2017

July 19, 2017

On Wed, Jul 19, 2017 at 2:24 PM, Matteo via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > ---------- Forwarded message ---------- > From: Matteo <matteob8(a)yahoo.it> > To: "Pharo is welcome (ML)" <pharo-users(a)lists.pharo.org> > Cc: > Bcc: > Date: Wed, 19 Jul 2017 14:24:18 +0200 > Subject: Problem to access the "book compilation farm" > Dears, > > I cannot accesses the site: > https://ci.inria.fr/pharo-contribution/view/Books/ > > Is there some problem with the server? > > Hi, The CI is down for an update. It should come back tomorrow or later this week. > Further, I saw serval "strange" messages on the main page of the > Pharo forum, http://forum.world.st/Pharo-f1294836.html. > > Should these messages be removed? > > > Thanks, > > Matteo. > > > -- Cyril Ferlicot https://ferlicot.fr http://www.synectique.eu 2 rue Jacques PrÃ©vert 01, 59650 Villeneuve d'ascq France

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Problem to access the "book compilation farm"
by Matteo July 19, 2017

July 19, 2017

Dears, I cannot accesses the site: https://ci.inria.fr/pharo-contribution/view/Books/ Is there some problem with the server? Further, I saw serval "strange" messages on the main page of the Pharo forum, http://forum.world.st/Pharo-f1294836.html. Should these messages be removed? Thanks, Matteo.

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Performance Testing Tools
by Evan Donahue July 19, 2017

July 19, 2017

Hi, I've been doing a lot of performance testing lately, and I've found myself wanting to upgrade my methods from ad hoc use of bench and message tally. Is there any kind of framework for like, statistically comparing improvements in performance benchmarks across different versions of code, or anything that generally helps manage the test-tweak-test loop? Just curious what's out there before I go writing something. Too many useful little libraries to keep track of! Evan

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