January 2020 - Pharo-users - lists.pharo.org

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

by xap

tbrunz, my comment above was to pander to my own selfish views of how-the-world-ought -to-work than for your benefit ;-) My own druthers would have been to refer to this list and your comments in the para "Pharo is also extremely versatile which is well-explained in this article, âSmalltalk: Itâs Not Your Grandparentâs Programming Language.â" As it is -- to me -- it smacks vaguely of plagiarism, and is the sort of stunt that gets one expelled -- certainly, called up to the dean -- in an educational institution of any standing. I expect more inclusivity and grace from a community builder or evangelist. But, that's me. *shrug* :) -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 16, 2020

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

by tbrunz

Thanks, xap... This is citation enough for me. (It's also documented in the comment section of his articles, which is where it actually originated before being echoed here.) Richard has my full support, and my implicit (now explicit) permission to freely borrow my ideas for his nicely-crafted essays. He has the time to write what I would, were I retired myself. And since I fully support his purpose, this is my contribution to "the cause". -t -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 15, 2020

Re: [Pharo-users] Floating point arithmetic

by Donald Howard

Thanks, everyone, for the great input. I will continue to work thru the background readings and recommendations you graciously supplied and go from there. Best regards, - Don On Tue, 14 Jan 2020 at 07:04, Bruce O'Neel <bruce.oneel(a)pckswarms.ch> wrote: > HI, > > I would upgrade that "a good read" to a critical read if you do anything > with floating point. Floating point numbers are not real numbers but > rather a small subset, and, have all kinds of funny properties. But we use > them just like real numbers and that's what catches us out. > > cheers > > bruce > > > > > *14 January 2020 03:05 Pierce Ng <pierce(a)samadhiweb.com > <pierce(a)samadhiweb.com>> wrote:* > > On Sun, Jan 12, 2020 at 02:13:00PM -0600, Donald Howard wrote: > > "What are other suggestions, workarounds or approaches community has?" > > This is a good read on the subject: > > https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html > > Title is "What every computer scientist should know about floating point > arithmetic". > > Pierce > > >

Jan. 15, 2020

Smalltalk meetup in Palo Alto, CA on January 25, 2020

by Alexandre Bergel

Dear Friends and Colleagues, We are organizing a Smalltalk meetup in Palo Alto, CA, on Saturday 25 January, 2020. The event is free, thanks to Lam Research, Object Profile, Semantics for sponsoring the event. More information may be found on https://agileartificialintelligence.github.io/meetup.html People who wish to attend, then the webpage contains the registration links. Please, join! Kind regards, Alexandre & Juan Pablo -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Jan. 15, 2020

Pharo Quality Rules for Beginners

by ESTEBAN VILLALOBOS DIAZ

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 :) Best, Esteban Villalobos

Jan. 15, 2020

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

by xap

Just to clarify, as I see it: -- this OP (http://forum.world.st/Smalltalk-It-s-Not-Your-Grandfather-s-Programming-Lan…) announces article "Smalltalk: Itâs Not Your Grandparentâs Programming Language"; the article has 1 occurrence of the word "car", and refers to a Maserati -- tbrunz' comment is the first in that thread to mention "electric car" and to compare it to Smalltalk (http://forum.world.st/Smalltalk-It-s-Not-Your-Grandfather-s-Programming-Lan…) -- then this OP (http://forum.world.st/As-promised-the-sequel-tt5109954.html) announces article "How is Smalltalkâs revival like the e-carâs revival?" Hence my earlier note that if you "hadn't already meant to follow up w/ the e-car parallel, perhaps refer to this mailing list" (which would be great exposure for the list), and to cite/credit the genesis of the article's thesis. -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 15, 2020

Re: [Pharo-users] Annonce Pharo-LibVLC

by Benoit Verhaeghe

Me again, I've tried vlc := VLCLibrary uniqueInstance createVLCInstance. "do not use accentuated characters for the path" media := vlc createMediaFromPath: ('/home/badetitou/VidÃ©os/bla.mkv' encodeWith: #utf8). mediaPlayer := VLCLibrary uniqueInstance mediaPlayerNewFromMedia: media. mediaPlayer pause (so I add `encodeWith: #utf8`) and it works on my laptop. Is there any way to force Pharo to use utf8 encoding when I want to send String to VLC. I don't know, I will investigate. BenoÃ®t Le 14/01/2020 Ã 21:10, Hilaire a Ã©critÂ : > Le 14/01/2020 Ã 19:21, Benoit Verhaeghe a Ã©critÂ : >> |If you use a symbolic link and it works please let me know so I can >> add this step in the installation.| >> > |Did so, so no more error but then executing the code snippet from > github, nothing happen.| > > || vlc mediaPlayer media | > "VLCLibrary reset" > vlc := VLCLibrary uniqueInstance createVLCInstance. > media := vlc createMediaFromPath: '/home/hilaire/VidÃ©os/Lea2019.webm'. > mediaPlayer := VLCLibrary uniqueInstance mediaPlayerNewFromMedia: media. > mediaPlayer play > | > > |I reset the unique instannce of VLCLibrary| > > |Hilaire > | > -- BenoÃ®t Verhaeghe badetitou.github.io benoit.verhaeghe(a)berger-levrault.com R&D Engineer at Berger-Levrault benoit.verhaeghe(a)inria.fr PHD student at Inria-Lille--Nord-Europe

Jan. 15, 2020

Re: [Pharo-users] Annonce Pharo-LibVLC

by Benoit Verhaeghe

Le 14/01/2020 Ã 21:10, Hilaire a Ã©critÂ : > Le 14/01/2020 Ã 19:21, Benoit Verhaeghe a Ã©critÂ : >> |If you use a symbolic link and it works please let me know so I can >> add this step in the installation.| >> > |Did so, so no more error but then executing the code snippet from > github, nothing happen.| Ok, In my point of view, the configuration works. If you execute |VLCLibrary uniqueInstance getVersion |you should get "3.x.x ..." > > || vlc mediaPlayer media | > "VLCLibrary reset" > vlc := VLCLibrary uniqueInstance createVLCInstance. > media := vlc createMediaFromPath: '/home/hilaire/VidÃ©os/Lea2019.webm'. > mediaPlayer := VLCLibrary uniqueInstance mediaPlayerNewFromMedia: media. > mediaPlayer play > | One possibility is that VLC does not achieve to create the media (but still return one instead of nil). Could you try to use a path without the 'Ã©'? | vlc mediaPlayer media | "VLCLibrary reset" vlc := VLCLibrary uniqueInstance createVLCInstance. media := vlc createMediaFromPath: '/home/hilaire/Lea2019.webm'. mediaPlayer := VLCLibrary uniqueInstance mediaPlayerNewFromMedia: media. mediaPlayer play If this is the error, I suppose I can configure vlc to use utf-8 string. Thanks for testing! BenoÃ®t > > |I reset the unique instannce of VLCLibrary| > > |Hilaire > | > -- BenoÃ®t Verhaeghe badetitou.github.io benoit.verhaeghe(a)berger-levrault.com R&D Engineer at Berger-Levrault benoit.verhaeghe(a)inria.fr PHD student at Inria-Lille--Nord-Europe

Jan. 14, 2020

Re: [Pharo-users] Annonce Pharo-LibVLC

by Hilaire

Le 14/01/2020 Ã 19:21, Benoit Verhaeghe a Ã©critÂ : > > |If you use a symbolic link and it works please let me know so I can > add this step in the installation.| > |Did so, so no more error but then executing the code snippet from github, nothing happen.| || vlc mediaPlayer media | "VLCLibrary reset" vlc := VLCLibrary uniqueInstance createVLCInstance. media := vlc createMediaFromPath: '/home/hilaire/VidÃ©os/Lea2019.webm'. mediaPlayer := VLCLibrary uniqueInstance mediaPlayerNewFromMedia: media. mediaPlayer play | |I reset the unique instannce of VLCLibrary| |Hilaire | -- Dr. Geo http://drgeo.eu

Jan. 14, 2020

Re: [Pharo-users] Annonce Pharo-LibVLC

by Benoit Verhaeghe

Hello, Yes, the final .9 matter... I have tested the binding on ArchLinux. And we have > $ whereis libvlccore libvlccore: /usr/lib/libvlccore.so and > $ whereis libvlc libvlc: /usr/lib/libvlc.so So two options, 1. I can add the version with ".9" in VLCLibrary>>#unix64LibraryName 2. Or you can create a link in ubuntu > ln -s /usr/lib/x86_64-linux-gnu/libvlccore.so.9 /usr/lib/x86_64-linux-gnu/libvlccore.so (please verity the command) In travis I'm doing ||dist: bionic |before_install ||- sudo apt install libvlc-dev libvlccore-dev| || || |And I have no problem.| | | | | |If you use a symbolic link and it works please let me know so I can add this step in the installation.| | | |Thanks for testing!| |BenoÃ®t | || Le 14/01/2020 Ã 19:05, Hilaire a Ã©critÂ : > Got an issue on Linux too (Ubuntu 18.04.03 LTS) > > See attached screenshot. Does the final .9 in the installed library matter? > > Hilaire > > Le 12/01/2020 Ã 16:41, Benoit Verhaeghe a Ã©critÂ : >> I just want to let you know that I've developed an FFI binding to VLC. >> Since, version 2.1.1 you can use it on Windows, Linux, and OSX. >> https://github.com/badetitou/Pharo-LibVLC >> -- BenoÃ®t Verhaeghe badetitou.github.io benoit.verhaeghe(a)berger-levrault.com R&D Engineer at Berger-Levrault benoit.verhaeghe(a)inria.fr PHD student at Inria-Lille--Nord-Europe

Jan. 14, 2020