November 2018 - Pharo-users

Question about pharo's object model
by iu136 Nov. 15, 2018

Nov. 15, 2018

hello guys I'm new to programming, I started programming using pharo, I had a question about pharo's object model. In object model we say, methods are public. What does "public" mean here? thanks -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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[ANN] Camp Smalltalk 2019 in Charlotte, NC
by Mariano Martinez Peck Nov. 14, 2018

Nov. 14, 2018

Greetings Fellow Smalltalkers, We would like to invite you to Camp Smalltalk, 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! -- Mariano

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[ANN] Pharo v7.0.0-rc1 released!
by Esteban Lorenzano Nov. 14, 2018

Nov. 14, 2018

Greetings! Iâm announcing today we reach Pharo 7.0.0-rc1! This is the first step to release a definitive version, and while we will continue integrating bug fixes, API change Pull Requests will be delayed until the open of Pharo 8.0.0 development. Now, you would wonder what is the ChangeLog of this releaseâ¦ and answer is we still do not have one (btw, we should find a way to automate this). Anywayâ¦ we are very close to release now :) Please download, test, report issues. Esteban

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Examples of bad code
by Oleksandr Zaytsev Nov. 13, 2018

Nov. 13, 2018

Hello, Do you know of some good examples of code that is unreadable because of the bad and inconsistent naming? I want to show some motivating example in my thesis about the aspects of software naturalness through the generation of identifier names. I'm sure that Pharo has many bad code inside, but this has to be something 1. From the real project written by experienced developers or a nice community (not some toy example or a code of bad developers) 2. With identifier names so bad that 2-3 chunks of code are enough to demonstrate how incomprehensible this code is. I need it to prove the point that 1. Bad naming can really harm the readability 2. Bad naming is not just a result of carelessness and lack of experience. Bad names often appear in successful projects and are introduced by experienced developers as a result of software evolution (many people write and rewrite the same code many times introducing inconsistencies and failing to understand each other's intentions and different parts of the system). Do you know some good examples of bad code from PolyMath, Seaside, Moose etc.? Oleks

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ToManyRelationSlot variant with an ordered collection?
by Tudor Girba Nov. 13, 2018

Nov. 13, 2018

Hi, The current implementation of ToManyRelationSlot is based on a RelationSet which holds the items in a Set. Is there an implementation that holds the items in an ordered collection? Cheers, Doru -- www.feenk.com "Some battles are better lost than fought."

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Canonical download location for Pharo VMs
by Esteban Maringolo Nov. 13, 2018

Nov. 13, 2018

What is the canonical repository/ci to download the latest VM for Pharo? I'm trying to get pharo launcher to launch a 32 bit image in Windows, but it complains it can't determine the image version, so I'm trying to download the latest 32 bit VM for Windows to launch it manually, but https://files.pharo.org/vm/ doesn't have anyting updated, and links to a Jenkins that seems abandoned, same thing for https://github.com/pharo-project/pharo-vm, and https://github.com/OpenSmalltalk/opensmalltalk-vm/ doesn't link to a successful build. Any hints on how to download the proper VM for windows 32 bit or successfully configure Pharo-Launcher to determine itself how to do it? Thank you. Esteban A. Maringolo

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OpenGL minimum working example?
by HernÃ¡n Morales Durand Nov. 13, 2018

Nov. 13, 2018

Hi. I tried to get an OpenGL MWE from https://github.com/ronsaldo/uffi-opengl in both Windows 8.1 and MacOS without luck. What I tried so far is to render a simple figure in a new window, adding this method to UFFIOpenGLOffscreenSamples: >>sample2 " self new sample2 " | context gl fb | context := UFFIOpenGLContext new. gl := context gl. fb := context offscreenBufferExtent: 300@300. context asCurrentDo: [ fb activate. gl " loadIdentity;" clear: GL_COLOR_BUFFER_BIT; begin: GL_QUADS; color3f_red: 1.0 green: 0.0 blue: 0.0; vertex3f_x: 0.0 y: 0.0 z: 0.0; vertex3f_x: 0.5 y: 0.0 z: 0.0; vertex3f_x: 0.5 y: 0.5 z: 0.0; vertex3f_x: 0.0 y: 0.5 z: 0.0; end; flush ]. fb asForm asMorph openInWindow. However the result is that VM hangs in both platforms. Any advice what I'm missing? Cheers, HernÃ¡n

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Re: [Pharo-users] OpenGL minimum working example?
by Tomohiro Oda Nov. 13, 2018

Nov. 13, 2018

Hello Hernan, I have partially working code at http://smalltalkhub.com/#!/~tomooda/Jun4Pharo My code still have two problems that * depending on resolution, projection matrix can't be properly set, and * it freezes pharo when switching to fullscreen Best Regards, --- tomo

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what must be instead of the ??
by Roelof Wobben Nov. 10, 2018

Nov. 10, 2018

Hello, I try to solve a adventofcode challenge where I must find out when santa is first at the basement. the floor is there -1. So I thought I use a while loop like this : santaFloorOnBasement Â Â Â "calculates which step take Santa to the basement" Â Â Â Â | index| Â Â Â Â index := 1. Â Â Â Â ??? when: (floor >=0 ) do: Â Â Â Â Â Â Â [ floor := (input at: index = '(' ) Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ifTrue: [ floor + 1 ] Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ifFalse: [ floor - 1 ]. Â Â Â Â Â Â Â Â index := index + 1 ]. but I cannot find out what must be instead of the ?? index is the index of the string which has to start with a 1. floorÂ and input are both instance variables. floor contains the current floor and input the input of the challenge. Can someone help me figure this out so the next time I can do this on my own. Roelof

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using latest iceberg with Pharo 6.1 / 7.0
by Sanjay Minni Nov. 8, 2018

Nov. 8, 2018

If I want to use iceberg then should I first update pharo image as mentioned on github iceberg homepage (https://github.com/pharo-vcs/iceberg) for 6.1: should I run the script as given on the homepage or is there an easier way to upgrade (i.e. some UI - point and click) ? for 7.0: its mentioned to clone iceberg and pull changes - i run iceberg ... - dialog opens:repositories - there is a line "iceberg ... local repositories missing". how should i proceed from here ? I tried as follows (not sure if that is right - double clicked on iceberg ... dialog opened: "working copy of iceberg" ... all lines have "local repository missing" - clicked icon Repair - in the dialog - selected github.com, owner:pharo-vcs, project:iceberg as per below <http://forum.world.st/file/t368721/iceberg01.jpg> - then got status "uptodate" and did a fetch ... finally dialog as below <http://forum.world.st/file/t368721/iceberg02.jpg> ok ... then what do i do next ? regards Sanjay ----- --- Regards, Sanjay -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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