- Pharo-users - lists.pharo.org

Latest Pharo Update

by Richard Kenneth Eng

The latest update to Pharo causes a "PrimitiveFailed: primitive #newProcess in ProcessWrapper class failed" message??? How did this happen?

Jan. 18, 2020

Re: [Pharo-users] Generate class hierarchy from JSON Schema

by serge.stinckwich＠gmail.com

Great work ! I will have a look. I want to be able to generate JSON files following a JSON Schema with a high level API. So my idea was to generate automatically from JSON Schema the class hierarchy but a runtime model might be enough maybe. Regards, Sent from my iPhone > On 18 Jan 2020, at 09:28, Norbert Hartl <norbert(a)hartl.name> wrote: > > ï»¿We have > > https://github.com/zweidenker/JSONSchema > > which is an implementation of basic stuff in JSON schema. But it does not compile classes it just creates a runtime model. To be honest I never understood why we make the effort to compile classes for parsed model. The runtime model works usually pretty well. The only reason I can see is that it is easier to store somewhere. > > If you like our code and you miss things, we are eager to add the stuff we not had (yet) reason to do so. > > Norbert > >> Am 18.01.2020 um 09:20 schrieb Serge Stinckwich <serge.stinckwich(a)gmail.com>: >> >> Hi there, >> >> anyone has experience about generating a class hierarchy from a JSON Schema ? Code available somewhere ? >> >> Thank you. >> >> -- >> Serge Stinckwich >> Int. Research Unit on Modelling/Simulation of Complex Systems (UMMISCO) >> Sorbonne University (SU) >> French National Research Institute for Sustainable Development (IRD) >> University of YaoundÃ© I, Cameroon >> "Programs must be written for people to read, and only incidentally for machines to execute." >> https://twitter.com/SergeStinckwich >

Jan. 18, 2020

Re: [Pharo-users] Generate class hierarchy from JSON Schema

by Norbert Hartl

We have https://github.com/zweidenker/JSONSchema <https://github.com/zweidenker/JSONSchema> which is an implementation of basic stuff in JSON schema. But it does not compile classes it just creates a runtime model. To be honest I never understood why we make the effort to compile classes for parsed model. The runtime model works usually pretty well. The only reason I can see is that it is easier to store somewhere. If you like our code and you miss things, we are eager to add the stuff we not had (yet) reason to do so. Norbert > Am 18.01.2020 um 09:20 schrieb Serge Stinckwich <serge.stinckwich(a)gmail.com>: > > Hi there, > > anyone has experience about generating a class hierarchy from a JSON Schema ? Code available somewhere ? > > Thank you. > > -- > Serge Stinckwich > Int. Research Unit on Modelling/Simulation of Complex Systems (UMMISCO) > Sorbonne University (SU) > French National Research Institute for Sustainable Development (IRD) > University of YaoundÃ© I, Cameroon > "Programs must be written for people to read, and only incidentally for machines to execute." > https://twitter.com/SergeStinckwich <https://twitter.com/SergeStinckwich>

Jan. 18, 2020

Generate class hierarchy from JSON Schema

by Serge Stinckwich

Hi there, anyone has experience about generating a class hierarchy from a JSON Schema ? Code available somewhere ? Thank you. -- Serge Stinckwic h Int. Research Unit on Modelling/Simulation of Complex Systems (UMMISCO) Sorbonne University (SU) French National Research Institute for Sustainable Development (IRD) U niversity of YaoundÃ© I, Cameroon "Programs must be written for people to read, and only incidentally for machines to execute." https://twitter.com/SergeStinckwich

Jan. 18, 2020

Re: [Pharo-users] As promised, the sequel!

by xap

"Getting an idea suggestion for an article is plagiarism???" perhaps that was rhetorical, what with the tripled punctuation. erring on the side it's not, broadly, unattributed, yes. here's oxford: https://www.ox.ac.uk/students/academic/guidance/skills/plagiarism here's webster: https://www.merriam-webster.com/dictionary/plagiarize it's a matter of attribution; in no way does it diminish work that you put in to develop or elucidate an idea (but you know all this of course). "I get ideas from all kinds of sources. ... There's no point in citing all of them." well, whomp, there it is ;-) separately, to distinguish baby from bathwater, your pieces come up in interwebz searches around smalltalk, the ones I've come by have been always readable often informative, and (as i've said before) thank you for the work that goes into making them available -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 17, 2020

Re: [Pharo-users] Is Pharo is a good frontend system for a game console?

by Vince Refiti

Hi I would use Lua Love (https://love2d.org/) for such things. Vince -----Original Message----- From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of ponyatov Sent: Friday, 17 January 2020 9:29 AM To: pharo-users(a)lists.pharo.org Subject: [Pharo-users] Is Pharo is a good frontend system for a game console? EXTERNAL: Do not click links or open attachments if you do not recognize the sender. Good day I'm playing with custom little Linux for retrogaming console based on Raspberry Pi 4. Is Pharo is a good frontend system (GUI) for a game console? There is no mouse or keyboard by default, only joystick. So running Smalltalk interface on system bootup has some questions on usability. Also, it should be able to run external native binary programs that can use OpenGL and SDL/SDL2 so I'm not sure is the Pharo graphics system will be run on direct framebuffer without X11, and is it stable to be used with such libraries. -- Sent from: https://urldefense.com/v3/__http://forum.world.st/Pharo-Smalltalk-Users-f13…

Jan. 17, 2020

Re: [Pharo-users] Pharo Quality Rules for Beginners

by Vince Refiti

Hello Esteban Some of the most common mistakes I made as a beginner and from seeing other beginners are (in no particular order): 1. Not learning to use the collections properly. In other words, not knowing the appropriate ones (OrderedCollection vs Array vs Dictionary vs String etc) and the messages that they understand. 2. Not using or not using the collections iterators properly (#select:/#reject:, #collect:, #inject:into:, #detect:, #do:, etc). 3. Not using or not using streams properly. 4. Concatenating strings where one or more substrings has a "'" (single quote) in it. 5. Adding things to a collection in a loop but forgetting to add a #yourself at the end (e.g., aCollection do: [ :each | anotherCollection add: each ]). 6. Writing large methods. 7. Abuse of inheritance. When teaching other people Smalltalk, I always recommend they look at Kent Beck's "Smalltalk Best Practise Patterns" and Klimas et als "Smalltalk with Style". Vince -----Original Message----- From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of Ben Coman Sent: Thursday, 16 January 2020 11:19 PM To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Cc: Pharo Development List <pharo-dev(a)lists.pharo.org> Subject: Re: [Pharo-users] Pharo Quality Rules for Beginners EXTERNAL: Do not click links or open attachments if you do not recognize the sender. On Wed, 15 Jan 2020 at 17:41, ESTEBAN VILLALOBOS DIAZ via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Hello everyone! > > My name is Esteban and I will be working on the Pharo Quality Rules for the next few months. The goal is to create different profiles for the rules according to the programming experience of the user. For example, for the beginner profile we would like to check for common mistakes made by people who are just starting with Pharo like: > > Sending self as a message (probably because they forgot a . ) Using > False instead of false etc.. > > I would appreciate it if you could share with me other common mistakes > that you have seen beginners do, or maybe tell me a bit of your own > experience when you started using Pharo :) - Getting confused between instance-side and class-side, mixing up which side methods are on. When getting a DNU maybe check if that message is known on the class-side. - leaving out the end of statement trailing dot. An error message like "Blah doesn't understand self" is a bit complex for a beginner to decipher. cheers -ben

Jan. 17, 2020

Re: [Pharo-users] Is Pharo is a good frontend system for a game console?

by ponyatov

But I still think a lot about using the Smalltalk system as a user interface, as it lets to program for any unskilled user have no programming background, and especially like the feature of the cross-powerup persistence. -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 16, 2020

Is Pharo is a good frontend system for a game console?

by ponyatov

Good day I'm playing with custom little Linux for retrogaming console based on Raspberry Pi 4. Is Pharo is a good frontend system (GUI) for a game console? There is no mouse or keyboard by default, only joystick. So running Smalltalk interface on system bootup has some questions on usability. Also, it should be able to run external native binary programs that can use OpenGL and SDL/SDL2 so I'm not sure is the Pharo graphics system will be run on direct framebuffer without X11, and is it stable to be used with such libraries. -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 16, 2020

Re: [Pharo-users] Smalltalk: Itâs Not Your Grandfatherâs Programming Language

by tbrunz

Hi Hilaire, I would put it this way: Smalltalk is to other programming languages as electric cars are to other vehicles. I.e., superior in countless ways, and becoming the favored technology as adoption increases. Within the realm of Smalltalk varieties, Pharo is the sexy, popular leader, just as within the realm of electric cars, Tesla is the sexy, popular leader. Or, "Smalltalk : Electric Cars :: Pharo : Tesla" to put it succinctly. And to continue the metaphor (why not?), this makes Stef "our Elon Musk": Creative, fearless, tireless, and dedicated to a vision that benefits humanity. The only question is, what will Stef send to Mars on a rocket? (How about a rover control system written in Pharo???) -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 16, 2020