January 2015 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Pointer Detective - Inspecting an Object (instance) and Doing a "PointerDetective openOn: self." leads to a System Error in Pharo?

by Ben Coman

Nice to have a user trying it out. I'll look into the problem, but can I have more info on reproducing it. * WAComponent is Seaside right? How did you load it, and into what version of Pharo? Nice eagle eye. That must have been there a long time without anyone noticing. Now I find three occurrences of that spelling in the image. Fixed for https://pharo.fogbugz.com/default.asp?14825 On Thu, Jan 29, 2015 at 5:16 PM, Mircea S. <mircea(a)unom.ro> wrote: > The object is a WhateverRoot instance (subclass of WAComponent) that has > "canBeRoot ^true." > > Am I doing something wrong? > > *PS.* My "eagle eye" caught a typo on line 9 of the error. "'*Orginal *error:' > ,title asString.". Maybe, just maybe... > More info and an printscreen here: > > > http://stackoverflow.com/questions/28210014/pointer-detective-inspecting-an… >

Jan. 29, 2015

Re: [Pharo-users] smalltalk workshops (building a webserver) after code-in

by Martin BÃ¤hr

Excerpts from Sebastian Sastre's message of 2015-01-29 15:04:46 +0100: > small feeback: the player didnât work on Safari OS X https://discussions.apple.com/thread/3961142 > and in Chrome the streaming was too poor. seems chrome doesn't do much buffering ahead but favors frequent interruptions. it also gets the playback speed wrong and plays back about 5-10% faster. (not that that's a real issue in itself) firefox is buffering a lot more. the video has high resolution and bitrate. (300MB for 75 minutes) so a fast connection is needed to stream. otherwise there is always right-click and save... > YouTube or Vimeo usually removes all those issues for you but they cause other problems, most notoriously they are hard to download from which annoys me a lot. they are also blocked in china. i would have to upload to multiple sites to make the video accessible to everyone, so i prefer to just host my own. greetings, martin. -- eKita - the online platform for your entire academic life -- chief engineer eKita.co pike programmer pike.lysator.liu.se caudium.net societyserver.org secretary beijinglug.org mentor fossasia.org foresight developer foresightlinux.org realss.com unix sysadmin Martin BÃ¤hr working in china http://societyserver.org/mbaehr/

Jan. 29, 2015

Re: [Pharo-users] SPEC and Athens

by Mark Rizun

Thanks Sebastian! It works :) Not perfectly well though. But it is something Mark 2015-01-29 10:20 GMT+01:00 Ben Coman <btc(a)openinworld.com>: > Really great to see all you do. A nice introduction. Now > practical focused criticism that can directly lead to some improvement is > generally welcome, and your longer post was a better example. It is the > generic platitudes of negativity that people get sensitive to. Now there > are many bugs listed in the issue tracker - many of them old. After you > log a ticket, feel free to socialise it in the lists, which might help draw > more eyeballs. > > cheers -ben > > On Thu, Jan 29, 2015 at 5:15 AM, Sebastian Heidbrink <sheidev(a)yahoo.de> > wrote: > >> Seems we wrote at the same time... >> >> Well, Steph here is what I do. >> >> - I attend, organize Smalltalk meet ups. >> - I contribute to the open source community of Gemstone, Amber and VAST >> - I attend conferences like ESUG and STIC and burn funds to make the >> community look bigger >> - I host Smalltalk Inspect >> - I organized the VanIsle CampSmalltalk last October >> - I provide feedback and write open source boards >> - I started a Software Group here in town that meets weekly and Smalltalk >> is always part of it. We didn't promote it yet, but are about to. >> >> For all these actions I need to prepare for questions that I might >> encounter like: >> - "Where do I get started?" >> - "Is there an example for...." >> - "Which Smalltalk distribution shall I start with?" >> - "Why does the Pharo 3.0 distribution not work with Moose 3.0 even >> though it is advertised?" >> - "How can I add more flavour to an application, which framework shall I >> use?" >> >> So what does Pharo community currently do for me? >> I report bugs and ask for help and fixes, introductions, examples. >> The answers I get is "load the most current 4.0 development. There it >> should work", "I don't know that doesn't work for me either..." >> >> Am I supposed to advertise Pharo the same way? To a beginner? >> >> I find it very strange that after 30 years one can not easily implement a >> modern looking GUI without too much hassle. >> Even the tool support for Pharo is inconsitant and unstable. I reported >> that several times. >> Unit tests are great, but UI tests are needed too. >> >> I can only tell you that a beginner in Smalltalk is not conditioned like >> us and he suffers much more problems as we do and even think of. >> e.g. it is difficult enough for them to understand what tools are >> available and how to navigate the code. But searching for a simple menu >> like "browse implementors" can even be challenging. >> I know 3 different implementations/spots in one release... >> >> There are so many developers out there that already heard of Smalltalk >> and would love to try it out. >> The only problem is.... there is no real support for them. >> Once you outgrow the Pharo tutorial it is extreemly difficult to go on >> with more serious stuff. >> Why do stable Configuration oftern not work and dev has to be loaded? >> That does not make sense in a One-Click-Image... >> >> I tried the experiement and started an application from scratch and it is >> really not easy to get started. First question was "Which UI framework do I >> actually have to use? There are "MANY" out there" >> >> But I have to tell all contributers here in the forum. The support and >> will to help is great! I realized that past months some of the questions I >> had had already been answered several times. >> I still got helpful answeres again and was able to go on. >> >> There should be a collection of useful tutorials that are maintained and >> tested before every release. >> I found several great tutorial that I can point Beginners at, but many of >> them do not work anymore. >> >> What you, board and the community currently built is a great eco sytem >> for tools and it is getting better every month. >> That is something that one can really tell. >> Please do not forget to take care of the upcoming Smalltalkers and their >> problems. >> >> There should be a timechart on Pharo.org that shows when (during which >> Pharo release) which framework was/is supported or considert feasable. >> Is BLoc old, or new? Is is deprecated or upcoming? Do the Pharo >> maintainers consider it usable with the current release and if not with >> which? >> >> "Welcome to the world of Smalltalk!" >> You don't like that reaction? Well this is the reaction I get,.... and >> well, what should I reply then? "If you don't like it, then contribute?" >> A beginner is shy and insecure,... they simply give up and download >> information on SWIFT... >> >> I propose that the community collects information on what Pharo is used >> for. What are it's strength and what kind of application is it the perfect >> abse for. >> This would help guys like me to advertise it with less surprise for the >> interested >> >> I am sorry, I won't currently be able to contribute code to the Pharo >> community since it is not part of my current stack. >> But I release chucnk of thought useful implementations that I encounter >> in my other dialects. >> The only thing that I can provide you with are critical questions that I >> encounter. >> That might change, but it is all I can do so far. >> >> Go on! But don't forget the beiggner and the basic ui. >> Sebastian >> >> >> >> Am 28.01.2015 um 12:23 schrieb stepharo: >> >> It was a bit easy to say that. >> You can get frustrated by the state of certain libraries and I can tell >> you that we are fighting daily >> to improve the system (writing doc, fighting to get funds for engineers, >> coding). >> Now you should ask yourself how you can help pharo. >> >> Stef >> >> Welcome to the world of Smalltalk! >> >> >> Am 28.01.2015 um 07:27 schrieb Mark Rizun: >> >> I have the same problem with PolygonMorph. It does not resize properly. >> Also I couldn't find any event related with window resizing. >> If you find a solution please let me know. >> >> Mark >> >> 2015-01-28 16:19 GMT+01:00 Sebastian Heidbrink <sheidev(a)yahoo.de>: >> >>> Am 28.01.2015 um 07:07 schrieb Mark Rizun: >>> >>> First the svg does not resive properly while resizing the window. >>>> >>> >>> What do you mean by this? >>> >>> >>> Well, I implemented the example window from spec.st and added a >>> ASVGMorph to it. >>> When I now resize the window, then the button changes his size correctly >>> but the svg somhow just seems to be put into the background. >>> I then implemented a SVGMorpModel that includes a ASVGMorpAdapter and >>> adde dthis one to my example window but the result is that the SVG resizes >>> just half the speed... >>> >>> >>> >>> >>>> How can I also introduce an animated SVG? Like an svg that changes >>>> color during a mouse click? >>>> >>> >>> To work with events that are implemented in AthensSvgMorph you have to >>> (as far as I know) access this morph. >>> You can do it by sending #widget message to your model to times like >>> this: >>> >>> svgModel widget widget ==> svgMorph >>> >>> Than morph can handle events like "changes color during a mouse click". >>> >>> >>>> Are there any particular Models that could be used as a container for >>>> this SVGMorphAdapter? >>>> >>> >>> SVGMorphAdapter is a class that represents a layer betwen SVGMorph >>> and model of svg in spec. >>> It allows model and morph to "communicate" with each other. >>> >>> Mark >>> >>> >>> >> >> >> >> >

Jan. 29, 2015

Re: [Pharo-users] New book for Pharo :)

by Ben Coman

MATH seems to constraining. SCI seems good. And I like that suggestion for SciTalk. On Thu, Jan 29, 2015 at 4:58 PM, Werner Kassens <wkassens(a)libello.com> wrote: > Hi HernÃ¡n > > This is like if I get 5 mathematicians, fork SciSmalltalk, push cool new >> features, and then make all you loose them if you don't update. And I >> could do it for fun 1000 times. You get the idea. >> > > <g> got it! > btw Serge explained his plans for scismalltalk here: > http://forum.world.st/scismalltalk-policy-tp4799887p4801564.html > an excerpt: > "What I want to do is to have a uniform prefix for all SciSmalltalk > classes, maybe SCI or MATH." > > werner > >

Jan. 29, 2015

Fwd: Additional easy persistence: try DebrisDB for Fuel-backed Glorp interface

by Cameron Sanders

Along the lines of *easy model persistence while writing application code that will scale*, I strongly encourage people to *try the DebrisDB package*. Scalability (beyond what Pharo can hold in memory -- note that one boost your heap size first) can be achieved by several means: 1) deploy on Gemstone, or 2) deploy with Glorp-SQL, or ... ?) use some of these other Glorp-interface options. These solutions can co-exist. See http://smalltalkhub.com/#!/~Debris/DebrisDB MCHttpRepository location: 'http://smalltalkhub.com/mc/Debris/DebrisDB/main' user: '' password: '' *By default, out of the box, the persistence is backed by Fuel files on Pharo. See the test case.* This has only been tested in Pharo3. The demo with only about 10 lines of specialization code (as a demonstration of how to control your storage, etc.) will provide you with a Glorp interface to store data in Fuel format files. Set-up couldn't be simpler, given that the Fuel package is pre-loaded in recent images. We have not published our Gemstone compatibility source yet because I was hoping we could clean it up a bit first. But if people are unwilling to try this package until the Gemstone support is present, we can fast-track that -- but please let me know if this is an immediate requirement, otherwise, it won't happen for nearly two months. *If you have questions or problems, please let me know.* There are many improvements we can make to this package, and I would encourage others, over time, to create more variants of the DataStore that are backed by non-SQL DBs, such as Mongo, or to add the methods to persist the DataStore in Mongo, for example. Cheers, Cam

Jan. 29, 2015

Re: [Pharo-users] smalltalk workshops (building a webserver) after code-in

by Sebastian Sastre

This is awesome We needed this! small feeback: the player didnât work on Safari OS X and in Chrome the streaming was too poor. YouTube or Vimeo usually removes all those issues for you Thanks for sharing and keep up that excellent work! > On Jan 29, 2015, at 2:52 AM, Martin BÃ¤hr <mbaehr(a)email.archlab.tuwien.ac.at> wrote: > > hi, > > Google Code-In is over (i'll probably write more about that later) > and there are a few students who have started their path to smalltalk. > > because there was interest among the students to continue learning, we have > started a series of workshops to learn the elements of building a webserver. > > i have created a screencast for the first topic: FileSystem > > you can read more about the workshop and find the screencast here: > http://societyserver.org/mbaehr/training/Using-the-FileSystem-class-in-Phar… > > being new to smalltalk myself, there are probably some mistakes, and things > that could be done better, however i believe the screencast is usable for > learning. > > i recorded this mostly without interruption except for a few times where i was > lost and had to stop and look up what i was going to do. > > i am open to feedback and criticism of any kind, from pointing out redundant > ()s or ways to improve the code to tips for debugging and testing. > > the next workshop will be saturday the > > greetings, martin. > > -- > eKita - the online platform for your entire academic life > -- > chief engineer eKita.co > pike programmer pike.lysator.liu.se caudium.net societyserver.org > secretary beijinglug.org > mentor fossasia.org > foresight developer foresightlinux.org realss.com > unix sysadmin > Martin BÃ¤hr working in china http://societyserver.org/mbaehr/ >

Jan. 29, 2015

Re: [Pharo-users] dirty packages

by Usman Bhatti

Thanks Torsten. Indeed, renaming the package solved the problem. On Thu, Jan 29, 2015 at 12:11 AM, Torsten Bergmann <astares(a)gmx.de> wrote: > Because "MyPackage" and "MyPackage-Ext" fall into the same > class categories. The name "MyPackage" is part of the string > "MyPackage-Ext". > > Packages and class categories are mixed to provide Pharo packages > and with this you are also still able to use old code or > import code from other Smalltalks. > > use: "MyPackage-Core" and "MyPackage-Ext" or > "MyPackage-Core" and "MyPackage-Ext-Core" > > and you wont have this problem. > > If you follow a proper naming scheme (like Seaside and mainly > also Pharo) you wont get this problem. > > Bye > T. > > >

Jan. 29, 2015

Re: [Pharo-users] SPEC and Athens

by Ben Coman

Really great to see all you do. A nice introduction. Now practical focused criticism that can directly lead to some improvement is generally welcome, and your longer post was a better example. It is the generic platitudes of negativity that people get sensitive to. Now there are many bugs listed in the issue tracker - many of them old. After you log a ticket, feel free to socialise it in the lists, which might help draw more eyeballs. cheers -ben On Thu, Jan 29, 2015 at 5:15 AM, Sebastian Heidbrink <sheidev(a)yahoo.de> wrote: > Seems we wrote at the same time... > > Well, Steph here is what I do. > > - I attend, organize Smalltalk meet ups. > - I contribute to the open source community of Gemstone, Amber and VAST > - I attend conferences like ESUG and STIC and burn funds to make the > community look bigger > - I host Smalltalk Inspect > - I organized the VanIsle CampSmalltalk last October > - I provide feedback and write open source boards > - I started a Software Group here in town that meets weekly and Smalltalk > is always part of it. We didn't promote it yet, but are about to. > > For all these actions I need to prepare for questions that I might > encounter like: > - "Where do I get started?" > - "Is there an example for...." > - "Which Smalltalk distribution shall I start with?" > - "Why does the Pharo 3.0 distribution not work with Moose 3.0 even though > it is advertised?" > - "How can I add more flavour to an application, which framework shall I > use?" > > So what does Pharo community currently do for me? > I report bugs and ask for help and fixes, introductions, examples. > The answers I get is "load the most current 4.0 development. There it > should work", "I don't know that doesn't work for me either..." > > Am I supposed to advertise Pharo the same way? To a beginner? > > I find it very strange that after 30 years one can not easily implement a > modern looking GUI without too much hassle. > Even the tool support for Pharo is inconsitant and unstable. I reported > that several times. > Unit tests are great, but UI tests are needed too. > > I can only tell you that a beginner in Smalltalk is not conditioned like > us and he suffers much more problems as we do and even think of. > e.g. it is difficult enough for them to understand what tools are > available and how to navigate the code. But searching for a simple menu > like "browse implementors" can even be challenging. > I know 3 different implementations/spots in one release... > > There are so many developers out there that already heard of Smalltalk and > would love to try it out. > The only problem is.... there is no real support for them. > Once you outgrow the Pharo tutorial it is extreemly difficult to go on > with more serious stuff. > Why do stable Configuration oftern not work and dev has to be loaded? That > does not make sense in a One-Click-Image... > > I tried the experiement and started an application from scratch and it is > really not easy to get started. First question was "Which UI framework do I > actually have to use? There are "MANY" out there" > > But I have to tell all contributers here in the forum. The support and > will to help is great! I realized that past months some of the questions I > had had already been answered several times. > I still got helpful answeres again and was able to go on. > > There should be a collection of useful tutorials that are maintained and > tested before every release. > I found several great tutorial that I can point Beginners at, but many of > them do not work anymore. > > What you, board and the community currently built is a great eco sytem for > tools and it is getting better every month. > That is something that one can really tell. > Please do not forget to take care of the upcoming Smalltalkers and their > problems. > > There should be a timechart on Pharo.org that shows when (during which > Pharo release) which framework was/is supported or considert feasable. > Is BLoc old, or new? Is is deprecated or upcoming? Do the Pharo > maintainers consider it usable with the current release and if not with > which? > > "Welcome to the world of Smalltalk!" > You don't like that reaction? Well this is the reaction I get,.... and > well, what should I reply then? "If you don't like it, then contribute?" > A beginner is shy and insecure,... they simply give up and download > information on SWIFT... > > I propose that the community collects information on what Pharo is used > for. What are it's strength and what kind of application is it the perfect > abse for. > This would help guys like me to advertise it with less surprise for the > interested > > I am sorry, I won't currently be able to contribute code to the Pharo > community since it is not part of my current stack. > But I release chucnk of thought useful implementations that I encounter in > my other dialects. > The only thing that I can provide you with are critical questions that I > encounter. > That might change, but it is all I can do so far. > > Go on! But don't forget the beiggner and the basic ui. > Sebastian > > > > Am 28.01.2015 um 12:23 schrieb stepharo: > > It was a bit easy to say that. > You can get frustrated by the state of certain libraries and I can tell > you that we are fighting daily > to improve the system (writing doc, fighting to get funds for engineers, > coding). > Now you should ask yourself how you can help pharo. > > Stef > > Welcome to the world of Smalltalk! > > > Am 28.01.2015 um 07:27 schrieb Mark Rizun: > > I have the same problem with PolygonMorph. It does not resize properly. > Also I couldn't find any event related with window resizing. > If you find a solution please let me know. > > Mark > > 2015-01-28 16:19 GMT+01:00 Sebastian Heidbrink <sheidev(a)yahoo.de>: > >> Am 28.01.2015 um 07:07 schrieb Mark Rizun: >> >> First the svg does not resive properly while resizing the window. >>> >> >> What do you mean by this? >> >> >> Well, I implemented the example window from spec.st and added a >> ASVGMorph to it. >> When I now resize the window, then the button changes his size correctly >> but the svg somhow just seems to be put into the background. >> I then implemented a SVGMorpModel that includes a ASVGMorpAdapter and >> adde dthis one to my example window but the result is that the SVG resizes >> just half the speed... >> >> >> >> >>> How can I also introduce an animated SVG? Like an svg that changes >>> color during a mouse click? >>> >> >> To work with events that are implemented in AthensSvgMorph you have to >> (as far as I know) access this morph. >> You can do it by sending #widget message to your model to times like this: >> >> svgModel widget widget ==> svgMorph >> >> Than morph can handle events like "changes color during a mouse click". >> >> >>> Are there any particular Models that could be used as a container for >>> this SVGMorphAdapter? >>> >> >> SVGMorphAdapter is a class that represents a layer betwen SVGMorph and >> model of svg in spec. >> It allows model and morph to "communicate" with each other. >> >> Mark >> >> >> > > > >

Jan. 29, 2015

Pointer Detective - Inspecting an Object (instance) and Doing a "PointerDetective openOn: self." leads to a System Error in Pharo?

by Mircea S.

The object is a WhateverRoot instance (subclass of WAComponent) that has "canBeRoot ^true." Am I doing something wrong? PS. My "eagle eye" caught a typo on line 9 of the error. "'Orginal error:' ,title asString.". Maybe, just maybe... More info and an printscreen here: http://stackoverflow.com/questions/28210014/pointer-detective-inspecting-an…

Jan. 29, 2015

Re: [Pharo-users] gt poster

by Ben Coman

great logo. On Thu, Jan 29, 2015 at 6:29 AM, Tudor Girba <tudor(a)tudorgirba.com> wrote: > Hi, > > Here is a poster for GT. > > Cheers, > Doru > > > -- > www.tudorgirba.com > > "Every thing has its own flow" >

Jan. 29, 2015