March 2016 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] Call about Numerical Methods in Pharo :)

by Serge Stinckwich

I was thinking as this name : Abacus https://en.wikipedia.org/wiki/Abacus A calculating tool ! On Sat, Mar 5, 2016 at 4:22 PM, Ben Coman <btc(a)openinworld.com> wrote: > On Sat, Mar 5, 2016 at 4:14 AM, Serge Stinckwich > <serge.stinckwich(a)gmail.com> wrote: >> On Fri, Mar 4, 2016 at 8:44 PM, Nicolas Cellier >> <nicolas.cellier.aka.nice(a)gmail.com> wrote: >>> >>> 2016-03-04 19:51 GMT+01:00 Alexandre Bergel <alexandre.bergel(a)me.com>: >>>> >>>> I personally never liked the name âSciSmalltalkâ. âSciPharoâ is much >>>> better in my opinion >>>> PhaNum is also okay to me. >>>> >>> >>> SciSmalltalk is ugly. >> >> I don't like the name either. We will find a better sexy name ! > > Just a random line of thought... > PhaNum --> NumPha --> numcha --> numchi > --> numqi "An energy around numbers" > > https://en.wikipedia.org/wiki/Qi > > cheers -ben > >>> Currently, there is no package named SciSmalltalk. >>> SciSmalltalk is just: >>> - an aggregate of packages (a metacello configuration) >>> - a repository (github + Smalltalkhub) >> >> SciSmalltalk is a bit more than just a few packages ... >> We have tests, we have a CI job, we have a book. >> >> -- >> Serge Stinckwich >> UCBN & UMI UMMISCO 209 (IRD/UPMC) >> Every DSL ends up being Smalltalk >> http://www.doesnotunderstand.org/ >> > -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

March 5, 2016

Re: [Pharo-dev] Call about Numerical Methods in Pharo :)

by Serge Stinckwich

On Sat, Mar 5, 2016 at 4:22 PM, Ben Coman <btc(a)openinworld.com> wrote: > On Sat, Mar 5, 2016 at 4:14 AM, Serge Stinckwich > <serge.stinckwich(a)gmail.com> wrote: >> On Fri, Mar 4, 2016 at 8:44 PM, Nicolas Cellier >> <nicolas.cellier.aka.nice(a)gmail.com> wrote: >>> >>> 2016-03-04 19:51 GMT+01:00 Alexandre Bergel <alexandre.bergel(a)me.com>: >>>> >>>> I personally never liked the name âSciSmalltalkâ. âSciPharoâ is much >>>> better in my opinion >>>> PhaNum is also okay to me. >>>> >>> >>> SciSmalltalk is ugly. >> >> I don't like the name either. We will find a better sexy name ! > > Just a random line of thought... > PhaNum --> NumPha --> numcha --> numchi > --> numqi "An energy around numbers" > > https://en.wikipedia.org/wiki/Qi Nice ! Any other ideas ? -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

March 5, 2016

Re: [Pharo-dev] Call about Numerical Methods in Pharo :)

by Ben Coman

On Sat, Mar 5, 2016 at 4:14 AM, Serge Stinckwich <serge.stinckwich(a)gmail.com> wrote: > On Fri, Mar 4, 2016 at 8:44 PM, Nicolas Cellier > <nicolas.cellier.aka.nice(a)gmail.com> wrote: >> >> 2016-03-04 19:51 GMT+01:00 Alexandre Bergel <alexandre.bergel(a)me.com>: >>> >>> I personally never liked the name âSciSmalltalkâ. âSciPharoâ is much >>> better in my opinion >>> PhaNum is also okay to me. >>> >> >> SciSmalltalk is ugly. > > I don't like the name either. We will find a better sexy name ! Just a random line of thought... PhaNum --> NumPha --> numcha --> numchi --> numqi "An energy around numbers" https://en.wikipedia.org/wiki/Qi cheers -ben >> Currently, there is no package named SciSmalltalk. >> SciSmalltalk is just: >> - an aggregate of packages (a metacello configuration) >> - a repository (github + Smalltalkhub) > > SciSmalltalk is a bit more than just a few packages ... > We have tests, we have a CI job, we have a book. > > -- > Serge Stinckwich > UCBN & UMI UMMISCO 209 (IRD/UPMC) > Every DSL ends up being Smalltalk > http://www.doesnotunderstand.org/ >

March 5, 2016

Re: [Pharo-dev] [Pharo-users] Little how to

by stepharo

I would love one example fetch something using Zinc and check the network status. I remember once I played with Pop and I wa sfetching mails one by one :) Le 5/3/16 12:11, Tudor Girba a Ã©crit : > Hi, > > Letâs take this opportunity to spawn more of these problems. Feel free to shoot them around and I will try to provide the scenario to program more live. What do you think? > > Cheers, > Doru > > >> On Mar 5, 2016, at 10:18 AM, stepharo <stepharo(a)free.fr> wrote: >> >> So cooooooooooooooooooooooooooool, it was on my todo with my son. >> --- this is really true, he came and told me I want to build my own game... >> And we do not have a game framework in our community --- at least one that I understand. >> So I was looking at Ruby or JS :( >> >> And clement show me the link and how he extracted the png. >> So we will do that this afternoon and add this as a challenge for the mooc >> I should have got faster :). >> >> >> Le 3/3/16 22:58, Tudor Girba a Ã©crit : >>> Hi, >>> >>> I wrote a little post with a how to extract sprites from a larger png file: >>> http://www.humane-assessment.com/blog/extracting-sprite-from-png >>> >>> Cheers, >>> Doru >>> >>> >>>> On Mar 3, 2016, at 9:23 AM, stepharo <stepharo(a)free.fr> wrote: >>>> >>>> Hi guys >>>> >>>> for the mooc I would like have a list of how to that students should look in the system and implement. >>>> The idea is to show to the participants that Pharo is open and that they can find information. >>>> For example, >>>> - extracting a sprite from a png file >>>> - access a time service of the web >>>> >>>> Now I would love to get your ideas and their solution. >>>> >>>> Stef >>>> >>>> >>>> >>> -- >>> www.tudorgirba.com >>> www.feenk.com >>> >>> "Beauty is where we see it." >>> >>> >>> >>> >>> >>> >> > -- > www.tudorgirba.com > www.feenk.com > > "If you can't say why something is relevant, > it probably isn't." > > >

March 5, 2016

Re: [Pharo-dev] Rubric mutability issue in RubTextComposer binary search

by Aliaksei Syrel

> > - When I use Spotter I get a rubric error (subscript ....) > Doru did you tell me that it was fixed? or did I got it wrong? Text highlighting related bug in Spotter is quite popular nowadays. Just to remember that it was already known a year ago and has nothing to do with spotter (see scripts how to localize bug): It works for text edit morph: |morph random| > morph := TextMorphForEditView new. > morph openInWindow extent: 400@400. > random := Random seed: 1337. [ 1 to: 1337 do: > [ :i | morph contents: (String loremIpsum: (random nextInt: 1337) + 42) ] > ] fork The same doesn't work for rubric: |rubric random| > rubric := RubScrolledTextMorph new beForSmalltalkCode. > rubric openInWindow extent: 400@400. > random := Random seed: 1337. > [ 1 to: 1337 do: > [ :i | rubric updateTextWith: (String loremIpsum: (random nextInt: 1337) > + 42) ] ] fork > Cheers, Alex On Wed, Mar 18, 2015 at 2:27 PM, Aliaksei Syrel <alex.syrel(a)gmail.com> wrote: > Hi, > > Why is that an issue in Rubric? > > > Because I can reproduce it only in Rubric :) > Rubric is great and it's a pleasure to use it! > I'm just curious if there is a possible quick fix. I guess, I have an idea > why it could happen (because rubric for styling uses it's own background > thread and doesn't absolutely takes care if during styling in its inner > threads text changes) but I'm not sure if I can find time in the very > nearest future to fix it, or at least try. > > Why do not ensuring in spotter that only one thread at a time can modify >> the text editor? > > That is the most interesting part. In spotter I can guarantee that at any > time always maximal only one thread have access to UI elements. But I can't > guarantee that this thread is UI one. It is important. I build some widgets > completely in background and then pass them to UI thread to be added in the > World. By convention in Spotter only UI thread can add and modify widgets > in the world. If widget not in the world it can be modified by any thread, > but only one. > > I tried to reproduce the issue, so there is a synthetic examples: (huge > numbers to increase probability of exception) > > It works for text edit morph: > > |morph random| >> morph := TextMorphForEditView new. >> morph openInWindow extent: 400@400. >> random := Random seed: 1337. > > [ 1 to: 1337 do: >> [ :i | morph contents: (String loremIpsum: (random nextInt: 1337) + 42) ] >> ] fork > > > The same doesn't work for rubric: > > |rubric random| >> rubric := RubScrolledTextMorph new beForSmalltalkCode. >> rubric openInWindow extent: 400@400. >> random := Random seed: 1337. >> [ 1 to: 1337 do: >> [ :i | rubric updateTextWith: (String loremIpsum: (random nextInt: 1337) >> + 42) ] ] fork >> > > > Why do not ensuring in spotter that only one thread at a time can modify >> the text editor? > > yes, if no solution is found I will always create rubric morphs in UI > thread > > Thanks for answers > > > Cheers, > Alex > > On Wed, Mar 18, 2015 at 1:45 PM, Guillermo Polito < > guillermopolito(a)gmail.com> wrote: > >> I agree with Stephan... I don't think that Rubric is built to be thread >> safe. >> >> Also, making Rubric thread safe will probably be a lot of work... Why do >> not ensuring in spotter that only one thread at a time can modify the text >> editor? >> >> El mar., 17 de mar. de 2015 a la(s) 11:42 p. m., Stephan Eggermont < >> stephan(a)stack.nl> escribiÃ³: >> >> Hi Alex, >>> >>> On 17/03/15 22:19, Aliaksei Syrel wrote: >>> > seems like there is a rather rare bug in Rubric. I opened an issue with >>> > explanation: >>> > >>> > https://pharo.fogbugz.com/f/cases/15153/Rubric-mutability- >>> issue-in-RubTextComposer-binary-search >>> > >>> > Would be nice to fix it until release. It was caught in Spotter - as it >>> > heavily uses multithreading. Any suggestions are welcome if it is >>> known :) >>> >>> Why is that an issue in Rubric? Sounds like you might need a monitor in >>> Spotter? >>> >>> Stephan >>> >>> >>> >

March 5, 2016

Red in Dark theme

by stepharo

Just that you know (because other people may have the same problem than my view :) I cannot read error in red in the dark theme. Probably because the hue of the red is not strong enough. Stef

March 5, 2016

Re: [Pharo-dev] [Pharo-users] Little how to

by Tudor Girba

Hi, Letâs take this opportunity to spawn more of these problems. Feel free to shoot them around and I will try to provide the scenario to program more live. What do you think? Cheers, Doru > On Mar 5, 2016, at 10:18 AM, stepharo <stepharo(a)free.fr> wrote: > > So cooooooooooooooooooooooooooool, it was on my todo with my son. > --- this is really true, he came and told me I want to build my own game... > And we do not have a game framework in our community --- at least one that I understand. > So I was looking at Ruby or JS :( > > And clement show me the link and how he extracted the png. > So we will do that this afternoon and add this as a challenge for the mooc > I should have got faster :). > > > Le 3/3/16 22:58, Tudor Girba a Ã©crit : >> Hi, >> >> I wrote a little post with a how to extract sprites from a larger png file: >> http://www.humane-assessment.com/blog/extracting-sprite-from-png >> >> Cheers, >> Doru >> >> >>> On Mar 3, 2016, at 9:23 AM, stepharo <stepharo(a)free.fr> wrote: >>> >>> Hi guys >>> >>> for the mooc I would like have a list of how to that students should look in the system and implement. >>> The idea is to show to the participants that Pharo is open and that they can find information. >>> For example, >>> - extracting a sprite from a png file >>> - access a time service of the web >>> >>> Now I would love to get your ideas and their solution. >>> >>> Stef >>> >>> >>> >> -- >> www.tudorgirba.com >> www.feenk.com >> >> "Beauty is where we see it." >> >> >> >> >> >> > > -- www.tudorgirba.com www.feenk.com "If you can't say why something is relevant, it probably isn't."

March 5, 2016

Re: [Pharo-dev] feedback about 50628

by Tudor Girba

Hi, > On Mar 5, 2016, at 10:59 AM, stepharo <stepharo(a)free.fr> wrote: > > Hi > > I tried to restart shooting videos for the mooc. > > - When I use Spotter I get a rubric error (subscript ....) > Doru did you tell me that it was fixed? or did I got it wrong? The SubscriptOutOfBounds error comes from Rubric which is not threadsafe. This problem happened all the time, and now it should only happen when the text is larger than 3k characters because otherwise the highlighting is done in the same thread. As far as I can see, we are stuck with this problem. So, I think we might have to remove the syntax highlighting from Rubric in Spotter :(. Doru > - then > DisplayScreen hostWindowSize: 1920@1080 > is crashing the VM (and I'm not resizing the window during package load) from time to time > stef > > -- www.tudorgirba.com www.feenk.com "Be rather willing to give than demanding to get."

March 5, 2016

Re: [Pharo-dev] [Pharo-users] Call about Numerical Methods in Pharo :)

by Sven Van Caekenberghe

> On 05 Mar 2016, at 11:37, Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > > frankly all this zealot mails do not have any sense. > > first, SciSmalltalk is a project made fundamentally by Serge, and is Serge who has pointed he wants a change of name for something sexierâ¦ what is the problem? > second, by discussing a nonsense (because is subjective and everybody has a different opinion) you are highjacking the real purpose of this mail: a call to the community to improve the numerical methods support in Pharo. > > So, please, can we stay cool and go back to discuss what is really important? +100 > cheers, > Esteban > > >> On 02 Mar 2016, at 14:33, stepharo <stepharo(a)free.fr> wrote: >> >> Hi guys >> >> I met Didier Besset and we had a great hacking session and discussions with Serge Stinckwich. >> Didier would like to help Pharo and the numerical part of it. ***Big thanks*** Didier. >> >> We would like to do several things: >> >> - Work on "Hows to" >> The numerical methods in Pharo is good but the gap between us and the math is too large :) >> so the idea is to have a series of "how to ..." >> - histomgram (simple, based on distribution) >> >> - Improve the SciPharo/NumPha (previously SciSmalltalk) library >> This morning we started to implement a ComponentPrincipalDecomposition by combining two of the >> objects available in SciPharo. >> Then we started to enhance the distributions to make sure that we can plug other distribution for having >> controlled random number. >> >> - Do a public call to know what is missing for you: this is this mail :) >> Didier would like to work on concrete cases. I love that attitude >> So tell us :) >> >> Hernan ?? >> Alex: ?? pvalue? better distribution? >> Vincent: covariance? CPA? >> Philippe: times series >> Serge R frames? >> Sami: Better random number and various distributions? >> >> - Organise a two day lectures with practices on concrete case in September with a recording session. >> Either at IRD Bondy or Lille. >> >> - Make sure that the Numerical Method book will get on lulu :) with a better cover and title :) >> >> >> Stef >> >> > >

March 5, 2016

Re: [Pharo-dev] Call about Numerical Methods in Pharo :)

by Esteban Lorenzano

frankly all this zealot mails do not have any sense. first, SciSmalltalk is a project made fundamentally by Serge, and is Serge who has pointed he wants a change of name for something sexierâ¦ what is the problem? second, by discussing a nonsense (because is subjective and everybody has a different opinion) you are highjacking the real purpose of this mail: a call to the community to improve the numerical methods support in Pharo. So, please, can we stay cool and go back to discuss what is really important? cheers, Esteban > On 02 Mar 2016, at 14:33, stepharo <stepharo(a)free.fr> wrote: > > Hi guys > > I met Didier Besset and we had a great hacking session and discussions with Serge Stinckwich. > Didier would like to help Pharo and the numerical part of it. ***Big thanks*** Didier. > > We would like to do several things: > > - Work on "Hows to" > The numerical methods in Pharo is good but the gap between us and the math is too large :) > so the idea is to have a series of "how to ..." > - histomgram (simple, based on distribution) > > - Improve the SciPharo/NumPha (previously SciSmalltalk) library > This morning we started to implement a ComponentPrincipalDecomposition by combining two of the > objects available in SciPharo. > Then we started to enhance the distributions to make sure that we can plug other distribution for having > controlled random number. > > - Do a public call to know what is missing for you: this is this mail :) > Didier would like to work on concrete cases. I love that attitude > So tell us :) > > Hernan ?? > Alex: ?? pvalue? better distribution? > Vincent: covariance? CPA? > Philippe: times series > Serge R frames? > Sami: Better random number and various distributions? > > - Organise a two day lectures with practices on concrete case in September with a recording session. > Either at IRD Bondy or Lille. > > - Make sure that the Numerical Method book will get on lulu :) with a better cover and title :) > > > Stef > >

March 5, 2016