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

Re: [Pharo-users] Pharo on Chromebook

by tesonep＠gmail.com

Hi, I have tested with CloudReady (another variation of Chromium OS) but I couldn't reproduce the error. Maybe there is a problem with the latest version of Chrome OS (that of course is not the same). On Mon, Jun 8, 2020 at 8:25 AM StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > > I think that we will have to buy one of such device. > What would be a good choice? > I know Olivier runs pharo on his without problem, > @olivier which Chrome book do you suggest us to buy? > > S. > > On 8 Jun 2020, at 00:40, tbrunz <wild.ideas(a)gmail.com> wrote: > > Hi Pablo, > > I'm seeing the same thing on a Chromebook "Pixelbook" Crostini (Linux) > container: > > Debian v9 ("stretch"), Linux kernel 4.9.0-12, recently updated. The system > has 8GB RAM & 128GB SSD. > > The ChromeOS version in 81.0.4044.141. > > I'm running the latest Pharo Launcher, 2.0-2020.04.07, VM 5.0-202002121043. > > Just opening Pharo Launcher, and without even launching an image, I'm seeing > the same tearing and rendering problems as Jan. If I open the Settings > dialog, it partially renders, and when I try to move the window, I get the > tearing behavior. > > And I was also able to run PL & images on this platform without problems in > the past. (It's been at least a month since I tried running Pharo on a > Chromebook.) > > -Ted > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr / http://www.pharo.org > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France > -- Pablo Tesone. tesonep(a)gmail.com

June 8, 2020

Re: [Pharo-users] Pharo on Chromebook

by StÃ©phane Ducasse

Thanks Olivier You do not experiment UI glitches so this means that it probably depend on the OS version. S > On 8 Jun 2020, at 09:22, olivier auverlot <olivier.auverlot(a)gmail.com> wrote: > > Hi, > > The leaders of the Chromebooks are Asus, Acer and HP. I recommend you to choose a recent model with a powerfull x86 processor. Them support Chrome apps, Android apps and Crostini for Linux apps. This last mode allows running Pharo on Chrome OS. Avoid the low cost Chromebooks. The middle price for a good computer is around 600-700 euros. > > In my case, I own a HP x360 14 (i5, 8 Go ram, 64 Go SSD, tactile screen, very good autonomy, backlight keyboard and very beautifull computer). > > The best vendor in France is Gowizyou that is a Google official partner (https://gowizyou.com <https://gowizyou.com/>). They are very serious and work with administrations, schools, etc. You can buy online on the Gowizyou store. > > Best regards > Olivier ;-) > > Le lun. 8 juin 2020 Ã 07:58, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr <mailto:stephane.ducasse@inria.fr>> a Ã©crit : > I think that we will have to buy one of such device. > What would be a good choice? > I know Olivier runs pharo on his without problem, > @olivier which Chrome book do you suggest us to buy? > > S. > >> On 8 Jun 2020, at 00:40, tbrunz <wild.ideas(a)gmail.com <mailto:wild.ideas@gmail.com>> wrote: >> >> Hi Pablo, >> >> I'm seeing the same thing on a Chromebook "Pixelbook" Crostini (Linux) >> container: >> >> Debian v9 ("stretch"), Linux kernel 4.9.0-12, recently updated. The system >> has 8GB RAM & 128GB SSD. >> >> The ChromeOS version in 81.0.4044.141. >> >> I'm running the latest Pharo Launcher, 2.0-2020.04.07, VM 5.0-202002121043. >> >> Just opening Pharo Launcher, and without even launching an image, I'm seeing >> the same tearing and rendering problems as Jan. If I open the Settings >> dialog, it partially renders, and when I try to move the window, I get the >> tearing behavior. >> >> And I was also able to run PL & images on this platform without problems in >> the past. (It's been at least a month since I tried running Pharo on a >> Chromebook.) >> >> -Ted >> >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> >> > > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr <http://stephane.ducasse.free.fr/> / http://www.pharo.org <http://www.pharo.org/> > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

June 8, 2020

Willow selections

by TomaÅ¾ Turk

Hi, when using selection components in Willow (like single and multiple selection lists), should #currentSelection and #currentSelectionIfNone: be called only within their own affordances? If I use these messages from onTrigger evaluate: of other components (e. g. buttons), then I don't get any selected object back. Thanks and best wishes, Tomaz

June 8, 2020

Re: [Pharo-users] Pharo on Chromebook

by StÃ©phane Ducasse

I think that we will have to buy one of such device. What would be a good choice? I know Olivier runs pharo on his without problem, @olivier which Chrome book do you suggest us to buy? S. > On 8 Jun 2020, at 00:40, tbrunz <wild.ideas(a)gmail.com> wrote: > > Hi Pablo, > > I'm seeing the same thing on a Chromebook "Pixelbook" Crostini (Linux) > container: > > Debian v9 ("stretch"), Linux kernel 4.9.0-12, recently updated. The system > has 8GB RAM & 128GB SSD. > > The ChromeOS version in 81.0.4044.141. > > I'm running the latest Pharo Launcher, 2.0-2020.04.07, VM 5.0-202002121043. > > Just opening Pharo Launcher, and without even launching an image, I'm seeing > the same tearing and rendering problems as Jan. If I open the Settings > dialog, it partially renders, and when I try to move the window, I get the > tearing behavior. > > And I was also able to run PL & images on this platform without problems in > the past. (It's been at least a month since I tried running Pharo on a > Chromebook.) > > -Ted > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

June 8, 2020

Re: [Pharo-users] Pharo on Chromebook

by tbrunz

Hi Pablo, I'm seeing the same thing on a Chromebook "Pixelbook" Crostini (Linux) container: Debian v9 ("stretch"), Linux kernel 4.9.0-12, recently updated. The system has 8GB RAM & 128GB SSD. The ChromeOS version in 81.0.4044.141. I'm running the latest Pharo Launcher, 2.0-2020.04.07, VM 5.0-202002121043. Just opening Pharo Launcher, and without even launching an image, I'm seeing the same tearing and rendering problems as Jan. If I open the Settings dialog, it partially renders, and when I try to move the window, I get the tearing behavior. And I was also able to run PL & images on this platform without problems in the past. (It's been at least a month since I tried running Pharo on a Chromebook.) -Ted -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

June 7, 2020

Roassal 0.9.1 is out!

by Alexandre Bergel

Hello, Roassal3 is an agile visualization engine for Pharo 8 and Pharo 9. Roassal is made to visualize data in an interactive way data. The GitHub website is https://github.com/ObjectProfile/Roassal3 <https://github.com/ObjectProfile/Roassal3> It contains tutorials and many documentations. We are happy to announce a new version of Roassal3, 0.9.1. Here is a summary of the release description: -=-=-=-=-=-= This version 0.9.1 improves Roassal3 in many different aspects. Here are the most relevants: â¢ A lot of class and method comments â¢ Improvement of the animation capabilities â¢ Improvement of Chart, the charting library â¢ Better highlighting mechanism â¢ Added some tests that check for the dependencies of Roassal3, just to make sure we do not introduce an unwanted dependency â¢ Improvement of the popup â¢ Better search in canvas capabilities â¢ Improvement of the force based layout â¢ Improvement of the stroke lines â¢ Many many more bugs fixes and small improvements... -=-=-=-=-=-= We would to thank everybody for making this to happen. You truly Rock! Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

June 6, 2020

Re: [Pharo-users] shape file reading

by HernÃ¡n Morales Durand

Done! Cheers HernÃ¡n El sÃ¡b., 6 jun. 2020 a las 3:17, StÃ©phane Ducasse (< stephane.ducasse(a)inria.fr>) escribiÃ³: > Please add this to the readme :) > > > On 5 Jun 2020, at 23:19, HernÃ¡n Morales Durand <hernan.morales(a)gmail.com> > wrote: > > > > El vie., 5 jun. 2020 a las 9:27, Baveco, Hans (<hans.baveco(a)wur.nl>) > escribiÃ³: > >> Well, it appears that simple direct downloading does not download the >> real shapefile. Taking care to actually get a shapefile, the result loads >> without problems. >> >> ne_110m_populated_places.shp is a PointShape with 243 shapes (points). If >> you display it on a Form (#displayMorphic) you wonât see much (243 hardly >> visible dots). >> >> >> > > I checked and my previous download method was completely wrong. Now > switching from ZnEasy to ZnClient to download and it works nicely: > > | shpE legend urlRoot urlESRIFilePrefix urlESRIFileShp urlPath response > fileRef | > > " Download Shapefile resources " > urlRoot := ' > https://github.com/nvkelso/natural-earth-vector/blob/master/110m_cultural/ > '. > urlESRIFilePrefix := 'ne_110m_populated_places'. > urlESRIFileShp := urlESRIFilePrefix , '.shp'. > urlPath := urlRoot , urlESRIFilePrefix. > > #('.shx' '.dbf' '.shp' '.cpg' '.prj') do: [ : ext | > ZnClient new > url: (urlPath , ext) asZnUrl; > queryAt: 'raw' put: 'true'; > numberOfRetries: 2; > enforceHttpSuccess: true; > downloadTo: urlESRIFilePrefix , ext; > get ]. > > " Load and display it in Morphic " > shpE := ShapeEnsemble fromFile: urlESRIFileShp. > " List data fields " > shpE dataFields inspect. > " List all shape records " > shpE shapeRecords inspect. > " Set the current attribute " > shpE attribute: 'NAME'. > > legend := ColorLegend mapValuesToRandom: shpE valuesOfCurrentAttribute. > shpE legend: legend. > > shpE displayMorphic. > > >> With an application for vector graphics (Roassal?) that can read & >> display the vector data we would get much nicer maps... >> >> >> >> Hans >> >> >> >> *From:* Baveco, Hans <hans.baveco(a)wur.nl> >> *Sent:* vrijdag 5 juni 2020 12:44 >> *To:* Any question about pharo is welcome <pharo-users(a)lists.pharo.org> >> *Subject:* [Pharo-users] shape file reading >> >> >> >> Hi Hernan >> >> >> >> I downloaded this shapefile directly via the browser. Indeed it wonât >> load, the type of shape file returned is >> >> self longAt: 33 bigEndian: false -> 577660194 >> >> >> >> >> >> where it should have answered an Integer between 0 and 31 >> >> >> >> shapeType >> >> "position 32, Integer between 0 and 31, Little Endian" >> >> >> >> ^shpBytes longAt: 33 bigEndian: false >> >> >> >> >> >> No idea what could be the cause â apparently the header of the file (the >> first 100 bytes) is not ok... >> >> >> >> Hans >> >> >> >> >> >> >> >> >> >> You mean some types are missing? Because I get this error when I try to >> read some SHP files: "Types > 20 are not yet accounted for" >> >> >> >> I wrote this script to reproduce: >> >> >> >> | shpE legend urlRoot urlESRIFilePrefix urlESRIFileShp urlPath response >> fileRef | >> >> " Download Shapefile resources " >> urlRoot := ' >> https://github.com/nvkelso/natural-earth-vector/blob/master/110m_cultural/ >> '. >> urlESRIFilePrefix := 'ne_110m_populated_places'. >> urlESRIFileShp := urlESRIFilePrefix , '.shp'. >> urlPath := urlRoot , urlESRIFilePrefix. >> >> #('.shx' '.dbf' '.shp') do: [ : ext | >> | url | >> url := (urlPath , ext , '?raw=true') asZnUrl. >> (response := ZnEasy get: url) isSuccess >> ifFalse: [ self error: 'Cannot download file' ]. >> fileRef := FileSystem disk workingDirectory / (urlESRIFilePrefix , ext). >> fileRef writeStreamDo: [ : stream | >> stream nextPutAll: ((ZnByteEncoder newForEncoding: 'koi8r') decodeBytes: >> response contents ) ] ]. >> >> >> >> Once downloaded: >> >> >> >> | urlESRIFilePrefix urlESRIFileShp shpE | >> urlESRIFilePrefix := 'ne_110m_populated_places'. >> urlESRIFileShp := urlESRIFilePrefix , '.shp'. >> >> " Load and display it in Morphic " >> shpE := ShapeEnsemble fromFile: urlESRIFileShp. >> >> >> >> Maybe it's related with the fact they are encoded as koi8r? >> >> I checked with Zinc downloading first from the browser: >> >> >> >> | shpFile | >> >> shpFile := 'ne_110m_admin_0_countries.shp' asFileReference. >> [ shpFile binaryReadStreamDo: [ : in | >> (ZnCharacterEncoder detectEncoding: in upToEnd) >> identifier ] ] >> on: ZnCharacterEncodingError >> do: [ nil ]. >> >> >> >> >> >> Cheers, >> >> >> >> HernÃ¡n >> >> >> >> >> >> > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr / http://www.pharo.org > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France > >

June 6, 2020

Re: [Pharo-users] [Pharo-dev] json-server / db.json (lowdb) / faker.js in Pharo/Zinc ?

by CÃ©drick BÃ©ler

Hi, > > Hi CÃ©drick, > > I think making something like jsonplaceholder would be quite easy. > > Do you know about the Zinc-REST package/group ? I knew but forget about it ! > > It contains an example in its tests, ZnExampleStorageRestServerDelegate with unit tests in ZnExampleStorageRestServerDelegateTest which implements a generic data storage. Have a look ! Will definitely look again at it. Is it using a json file as db too ? I guess that be easy to add if not. Iâll look at it soon. Any feedback about faker ? Thatâd be a fun project to do in Pharo. There are lots of them. I donât know which one to look at more in detail (js, ruby, python, php... ?). https://github.com/faker-ruby/faker https://github.com/marak/Faker.js/ https://github.com/joke2k/faker â¦ Anybody knows whatâs the most Â« complete Â» or elegant ? > > BTW, recently I added ZnClient>>#forJsonREST, which uses either STONJSON (which is in the image) or NeoJSON (when loaded), so that you can more elegant code for this use case: Uhm right, I always forget and use the old way (with #contentReader: ). Thanks for the information Sven, CÃ©drick > > ZnClient new > url: 'https://jsonplaceholder.typicode.com/posts'; > forJsonREST; > get. > > ZnClient new > url: 'https://jsonplaceholder.typicode.com/posts'; > forJsonREST; > contents: { #title->'Test'. #body->String loremIpsum } asDictionary; > post. > > Sven > >> On 6 Jun 2020, at 09:44, CÃ©drick BÃ©ler <cdrick65(a)gmail.com> wrote: >> >> Hi Sven and all, >> >> Disclaimer: just another rather not important query (mainly for fun so donât hesitate to tell me to use the node packages instead ;-) ) >> >> To show API to students, I sometimes use https://jsonplaceholder.typicode.com. Itâs nice to play with client requests. I wonder if this would be interesting to have such tools in Pharo/Zn. Maybe it exists already somehow (for Teapot eventually) ? >> https://medium.com/codingthesmartway-com-blog/create-a-rest-api-with-json-s… >> >> From their GitHub, I discovered json-server + lowdb (based on lowdash) => all nodes packages. >> https://github.com/typicode. >> >> <GraphiqueCollÃ©-6.tiff> >> >> It uses a db file db.json and I like such simple Â« databases Â». I know they're not real db. >> https://github.com/typicode/lowdb >> >> To me, it could nearly be to me an elegant personal db even if I think this is mostly used to test APIâs. >> Indeed, Itâs often used in conjunction with node package faker (https://github.com/marak/Faker.js/ (https://github.com/marak/Faker.js/) >> I would like to use that to generate static websites from Ecstatic. >> >> The placeholder default website has limitations. For instance, the following request creates a new post (but then you cannot see the result if you query for posts just after) >> >> <GraphiqueColleÌ-5.png> >> >> >> I wanted to go past the limitation of the placeholder site (the db.json cannot be written). I can of course use the node package but you know :) Might be not so straight to port though. >> >> So there are probably three open questions in this post: >> 1) lowdb (I know this is not a database but itâs handy and Iâd like such usage in static website generation in conjunction with Ecstatic). Any already existing experiments maybe ? I donât think Voyage can do that. >> 2) the API json-server based on routes (maybe a job for Teapot) ? >> 3) the faker package as a fun exercice. >> >> What others think ? My priority would go for having some kind of lowdb (and Iâm pretty sure there are experiments around that - It reminds me a bit sandstonedb from Ramon http://onsmalltalk.com/sandstonedb-simple-activerecord-style-persistence-in…. >> >> Cheers, >> >> CÃ©drick >> >> >> > >

June 6, 2020

Re: [Pharo-users] [Pharo-dev] json-server / db.json (lowdb) / faker.js in Pharo/Zinc ?

by Sven Van Caekenberghe

Hi CÃ©drick, I think making something like jsonplaceholder would be quite easy. Do you know about the Zinc-REST package/group ? It contains an example in its tests, ZnExampleStorageRestServerDelegate with unit tests in ZnExampleStorageRestServerDelegateTest which implements a generic data storage. Have a look ! BTW, recently I added ZnClient>>#forJsonREST, which uses either STONJSON (which is in the image) or NeoJSON (when loaded), so that you can more elegant code for this use case: ZnClient new url: 'https://jsonplaceholder.typicode.com/posts'; forJsonREST; get. ZnClient new url: 'https://jsonplaceholder.typicode.com/posts'; forJsonREST; contents: { #title->'Test'. #body->String loremIpsum } asDictionary; post. Sven > On 6 Jun 2020, at 09:44, CÃ©drick BÃ©ler <cdrick65(a)gmail.com> wrote: > > Hi Sven and all, > > Disclaimer: just another rather not important query (mainly for fun so donât hesitate to tell me to use the node packages instead ;-) ) > > To show API to students, I sometimes use https://jsonplaceholder.typicode.com. Itâs nice to play with client requests. I wonder if this would be interesting to have such tools in Pharo/Zn. Maybe it exists already somehow (for Teapot eventually) ? > https://medium.com/codingthesmartway-com-blog/create-a-rest-api-with-json-s… > > From their GitHub, I discovered json-server + lowdb (based on lowdash) => all nodes packages. > https://github.com/typicode. > > <GraphiqueCollÃ©-6.tiff> > > It uses a db file db.json and I like such simple Â« databases Â». I know they're not real db. > https://github.com/typicode/lowdb > > To me, it could nearly be to me an elegant personal db even if I think this is mostly used to test APIâs. > Indeed, Itâs often used in conjunction with node package faker (https://github.com/marak/Faker.js/ (https://github.com/marak/Faker.js/) > I would like to use that to generate static websites from Ecstatic. > > The placeholder default website has limitations. For instance, the following request creates a new post (but then you cannot see the result if you query for posts just after) > > <GraphiqueColleÌ-5.png> > > > I wanted to go past the limitation of the placeholder site (the db.json cannot be written). I can of course use the node package but you know :) Might be not so straight to port though. > > So there are probably three open questions in this post: > 1) lowdb (I know this is not a database but itâs handy and Iâd like such usage in static website generation in conjunction with Ecstatic). Any already existing experiments maybe ? I donât think Voyage can do that. > 2) the API json-server based on routes (maybe a job for Teapot) ? > 3) the faker package as a fun exercice. > > What others think ? My priority would go for having some kind of lowdb (and Iâm pretty sure there are experiments around that - It reminds me a bit sandstonedb from Ramon http://onsmalltalk.com/sandstonedb-simple-activerecord-style-persistence-in…. > > Cheers, > > CÃ©drick > > >

June 6, 2020

json-server / db.json (lowdb) / faker.js in Pharo/Zinc ?

by CÃ©drick BÃ©ler

Hi Sven and all, Disclaimer: just another rather not important query (mainly for fun so donât hesitate to tell me to use the node packages instead ;-) ) To show API to students, I sometimes use https://jsonplaceholder.typicode.com. Itâs nice to play with client requests. I wonder if this would be interesting to have such tools in Pharo/Zn. Maybe it exists already somehow (for Teapot eventually) ? https://medium.com/codingthesmartway-com-blog/create-a-rest-api-with-json-s… >From their GitHub, I discovered json-server + lowdb (based on lowdash) => all nodes packages. https://github.com/typicode. It uses a db file db.json and I like such simple Â« databases Â». I know they're not real db. https://github.com/typicode/lowdb To me, it could nearly be to me an elegant personal db even if I think this is mostly used to test APIâs. Indeed, Itâs often used in conjunction with node package faker (https://github.com/marak/Faker.js/ (https://github.com/marak/Faker.js/) I would like to use that to generate static websites from Ecstatic. The placeholder default website has limitations. For instance, the following request creates a new post (but then you cannot see the result if you query for posts just after) I wanted to go past the limitation of the placeholder site (the db.json cannot be written). I can of course use the node package but you know :) Might be not so straight to port though. So there are probably three open questions in this post: 1) lowdb (I know this is not a database but itâs handy and Iâd like such usage in static website generation in conjunction with Ecstatic). Any already existing experiments maybe ? I donât think Voyage can do that. 2) the API json-server based on routes (maybe a job for Teapot) ? 3) the faker package as a fun exercice. What others think ? My priority would go for having some kind of lowdb (and Iâm pretty sure there are experiments around that - It reminds me a bit sandstonedb from Ramon http://onsmalltalk.com/sandstonedb-simple-activerecord-style-persistence-in…. Cheers, CÃ©drick

June 6, 2020