March 2019 - Pharo-users - lists.pharo.org

Serializing classes with Fuel
by Konrad Hinsen March 6, 2019

March 6, 2019

Hi everyone, does anyone here have some experience with Fuel? Its Web site says "It can serialize/materialize not only plain objects but also classes, traits, methods, closures, contexts, packages, etc.". So I should be able to serialize a class somehow, right? But classes are by default treated as global objects, even if they aren't. The class I want to serialize is created by newAnonymousSubclass. And yet, Fuel only stores its name in the output file. The documentation describes considerGlobal: which does the opposite of what I want. So my question is: how can I tell Fuel *not* to consider a class as global? Konrad.

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Re: [Pharo-users] Symbol equality method #= - weird condition in the Pharo sourcecode
by Sven Van Caekenberghe March 6, 2019

March 6, 2019

> On 1 Mar 2019, at 17:08, Petr Fischer via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > From: Petr Fischer <petr.fischer(a)me.com> > Subject: Symbol equality method #= - weird condition in the Pharo sourcecode > Date: 1 March 2019 at 17:08:03 GMT+1 > To: pharo-users(a)lists.pharo.org > > > Hello, this is Symbol equality method in Pharo: > > 1: = aSymbol > 2: "Compare the receiver and aSymbol." > 3: self == aSymbol ifTrue: [^ true]. > 4: self class == aSymbol class ifTrue: [^ false]. > 5: "Use String comparison otherwise" > 6: ^ super = aSymbol > > Look at line 4 - what does it mean? That's wrong, isn't it? > > Typically, every symbol comparisons end up in line 3, but if you do some work with forward proxies for example, condition on line 3 is "false" and then weird things on line 4 happens. > > If line 4 and further are correct, can someone explain a little? > > Thanks! pf Yes, that looks weird. Line 4 should probably be removed, unless I am missing something. Symbols are by definition always #== so in that sense, #= should not even be implemented (as #= on Object is defined as #==), but since its direct super class String already overwrote #=, it has to follow. The super call in line 6 is what allows Symbols and String to be compared. I would say line 4 is a kind of sanity check, but probably not needed.

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offers (deb and rpm packages included)
by Michael Zeder March 6, 2019

March 6, 2019

Hi! I would like to make two offers: First, I know, deciding to be provocative can hurt. I did it int the hope that the released energy will be transformed in something good by the community, so apology for having been loud and insistent. Second, I felt oblidged to give at least a little thing back (since I use Pharo mostly in spare time). So, hey Linuxers! Whenever I set up a new system, I integrate Pharo Launcher into the desktop environment. I thought, I just built Debian .deb and RPM packages, for convient installation, on multiuser desktops. https://gitlab.com/mjz/pharo-linux-packages Maybe you like it. What does it do? installs shell shortcut ( $ pharo ) and application menu item (Gnome, KDE etc), which when called, copy Launcher image and resources into hidden user dir ( /home/USER/.pharolauncher ), if needed, and start Pharo Launcher. Packaged as DEB and RPM for i386 and x86_64. Please always verify binary integrity. M

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A "with" construct like Pascal - easy to do, but is it terrible?
by Tim Mackinnon March 6, 2019

March 6, 2019

Iâve noticed that as weâve progressed there has been a move to more concise and fluid code - e.g. I quite like the new String streaming stuff e.g. ^ String streamContents: [ :stream | stream nextPut: â¦. ] So I was wondering why we donât have a construct like Pascals with to avoid Book1.title, Book1.author etc. (* book 1 specification *) With Book1 do begin title := 'C Programming'; author := 'Nuha Ali '; subject := 'C Programming Tutorial'; book_id := 6495407; end; I often find it a bit tedious with code like the following which then needs an instvar... self classes do: [ :class | | metaclass | metaclass := class metaclass. metaclass xxxx. mataclass yyyy. ] Iâm wondering why we donât have #with:do: class with: class metaclass do: [:metaclass | metaclass xxx. ] But when such things arenât there - there is usually a good reason and Iâm curious â¦ this said, there are all kinds of other such tricks (which I rarely use that I keep coming across). Tim

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[ANN] Pharo 7.0.2 released!
by Esteban Lorenzano March 6, 2019

March 6, 2019

Hi, I just made a bugfix release of Pharo: v7.0.2 <https://github.com/pharo-project/pharo/releases/tag/v7.0.2> <https://github.com/estebanlm> estebanlm <https://github.com/estebanlm> released this 22 hours ago Bugfix release #2303 <https://github.com/pharo-project/pharo/issues/2303> Deprecation fixes in TEasilyThemed #2120 <https://github.com/pharo-project/pharo/pull/2120> Object-centric MetaLink integration #2376 <https://github.com/pharo-project/pharo/pull/2376> Ensure subMenu is opened (backport) #2428 <https://github.com/pharo-project/pharo/pull/2428> Add scrollSelectionIntoView #2700 <https://github.com/pharo-project/pharo/pull/2700> Tonel test is failing (backport) Enjoy :) Esteban

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[ANN] Pharo Consortium New Academic Member: CIRAD
by Marcus Denker March 6, 2019

March 6, 2019

The Pharo Consortium is very happy to announce that CIRAD has joined the Consortium as an Academic Member. About - CIRAD, the French Agricultural Research Centre for International Development: https://www.cirad.fr/en/home-page - 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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Final Reminder: Only 5 spots left for Camp Smalltalk! Raspberry PI kits to all who attend!
by Mariano Martinez Peck March 5, 2019

March 5, 2019

Hello All, There are 5 slots left for Camp Smalltalk Charlotte 2019 taking place at the end of this month. Now is the time to sign up if you are thinking of attending (see bottom for registration link). Camp Smalltalk is about community engagement and collaboration. There are a number of fantastic talks already lined up such as: Developing Smalltalk solutions running directly on ios / android mobile platforms (along with tooling) Live demo of @1MB remote-debuggable smalltalk images controlling peripherals attached to a Raspberry PI (ARM) In-depth look at large scale use of CMake/CTest/CDash for use with Smalltalk systems Smalltalk dialect portability solutions for the Smalltalk community (for use with GIT) We also have a fantastic Saturday evening social dinner planned on the boardwalk near the hotel. *As a special gift to attendees*, Instantiations will be providing everyone with their own Raspberry PI Zero Wifi devices with 8GB mini-sd card and power supply. Raspbian Linux with VA Smalltalk for ARM will be pre-installed. And if that isn't enough, each attendee will be receiving an open-source license for VA Smalltalk. This event is happening *March 29th â March 31st 2019* in Charlotte, North Carolina. Event details and registration info are available at the following link: Camp Smalltalk Charlotte 2019 <https://www.eventbrite.com/e/camp-smalltalk-charlotte-2019-tickets-52380940…> Hope to see you there! [image: IMG_0912.jpg] -- Mariano https://twitter.com/MartinezPeck http://marianopeck.wordpress.com

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im using pharo 7 with linux env. but cannot input korean.
by peter yoo March 5, 2019

March 5, 2019

hello~.. im using pharo 7 with linux env. but cannot input korean. and.. already start shell script file open and add "--compositioninput". but any receive data from XIM(fcitx). who know for this issue? thanks. -- http://lookandwalk.com http://looknw.com | http://onionmixer.net peter yoo(Jonghwa Yoo). ROK

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Changes between two different classes
by Ben Coman March 4, 2019

March 4, 2019

Say I duplicate Class A as Class B then modify some methods in Class B. Is there some way to use the DIff or Changes tools to compare Class A and Class B ? cheers -ben

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Exercism / Ring
by Ben Coman March 4, 2019

March 4, 2019

For Pharo track on https://exercism.io it may be useful for mentors to be able to review submitted solutions without disturbing their live image, and I wonder if Ring could be useful? Looking at Slide 30 here... https://www.slideshare.net/esug/metamodeling-of-custom-pharo-images it seems that maybe Calypso can open up on a Ring model? cheers -ben

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