- Pharo-users - lists.pharo.org

Autoformatting extisting packages

by Laura Risani

Hi all, How do i apply autoformatting to existing packages? I've read somewhere that this functionality used to be at the refactoring menu, but i can't find it, don't know if it has been renamed or moved. Best, Laura

Jan. 29, 2015

Code completion differences at browser and workspace

by Laura Risani

Hi all, I've noticed that the code completition tool shows a different list if brought up at a workspace or at a system browser. Particulary workspace's completition list is broader than browser's one. For instance if while writting a method i have already accepted other method names but haven't yet defined them in any class, these selectors are shown in worskpace's completition but don't in browser's. So while at the system browser i have to waste keystrokes bringing up the manually the other completition tool and search in that list the selector i want. So, question : how do i make the completition tool show at system browser the same list that it would show at a workspace? Best, Laura

Jan. 29, 2015

Re: [Pharo-users] [ANN] PUnQLite NoSQL database project updated

by PBKResearch

Hi Torsten This looks very interesting. I am looking at a project which needs simple persistence, and I was considering MongoDB plus Voyage, which looked like overkill. I shall definitely be trying PUnQLite. I am not yet on Pharo 4; I am using Moose 5.0, which is essentially Pharo 3. To load PUnQLite, I used the Gofer script on GitHub, the only problem being that the config did not load the PunQLite-Tools package; I got that separately by using the Monticello browser. My main purpose here is to tell you about a problem I found when running the 'comments.db' example below. The database was generated as expected, but when I used the Database Browser to examine the results, I found that trying to display the comment for some classes caused a PqFetchError. It affects only a small proportion of classes; going through the alphabetical list in the browser, the first three classes affected are AbstractDistributionMap, AbstractEcryptorDecryptor (sic) and AbstractTimeZone. One curiosity is that, once the debugger window has popped up for one entry and been closed down, the same window appears whichever other entry is selected next. I have deleted and recreated the 'comments.db' file to see if that would clear the problem, but it persisted. This disclosed another curiosity. The 'choose a .db' window that pops up when opening the Database Browser has a button to delete a file, but it did not delete my database file when I tried it; I had to close down Pharo to free the file and then use Windows Explorer. It seems that the problem is one which affects the Database Browser only; I tried a snippet in a workspace which opened the comments.db database and retrieved the entry for AbstractDistributionMap, and it worked correctly. I hope this is enough detail for you to investigate; if not, come back to me. Best wishes Peter Kenny -----Original Message----- From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of Torsten Bergmann Sent: 29 January 2015 08:20 To: Any question about pharo is welcome; Pharo Development List Cc: ume(a)blueplane.jp Subject: [Pharo-users] [ANN] PUnQLite NoSQL database project updated Hi, are you in need for really simple out of image persistency? If you like to use a small RDBMS solution with Pharo then there is the embeddable SQLite shared library and NBSQLite3 project [1] to access it. Combine it with Glorp [2] and you do not have to fight too much with SQL. On the other end of persistency world there are the so called "NoSQL databases" and beside Mongo and all the others that require special setup etc. there is this wonderful small UnQLite embeddable database [3] that similar to SQlite world only requires a simple library. Thanks to Masashi Umezawa there is a nice wrapper for Pharo already to access this tiny embeddable NoSQL database called "PUnQLite" [4] and [5], also including access to the Jx9 machinery of UnQLite. It is really cool that he made this available. This week I updated "PUnQLite" a little bit: - refactored the Native boost wrapper for UnQLite (using shared pools, ...) - documented classes - added a help topic - fixed a bug in cursors when accessing the keys in an empty database - and finally added a small spec based tool to work with a database file (see attached screenshot) One can use it to open an unqlite database, show the key value pairs and remove or add entries. If you are in latest Pharo 4 already you can load all of that right from the config browser. Be aware that you need the external unqlite shared library which is downloaded and extracted into a folder "pharo-vm" when loading the config. For instance on Windows it automagically downloads a file "pharo-vm/unqlite.dll" below your image directory and you just have to copy this shared library file to the folder where your VM (Pharo.exe) resides. Havent tried on other OS platforms. >From the Pharo side using the UnQLite database basically works like having some kind "external dictionary" in a database file. Just run that in a workspace: |db| db := PqDatabase open: 'comments.db'. db disableAutoCommit. db transact: [ Object subclasses do: [:cls | | key | key := cls asString. db at: key put: cls comment ] ]. db close. Then open the "Database Browser" from the world menu and open the "comments.db" file. You can browse the keys and values, remove entries or add new. A filter for the keys is also included. Nothing fancy but hope you like it or find it usable. Couldnt make it to PharoConf 2015 but I hope all participants enjoy their time there. Keep the others updated by using the #pharodays2015 on Twitter. Have fun! Bye T. [1] http://lists.pharo.org/pipermail/pharo-dev_lists.pharo.org/2015-January/104… [2] http://lists.pharo.org/pipermail/pharo-users_lists.pharo.org/2015-January/0… [3] http://unqlite.org/ [4] https://github.com/mumez/PunQLite [5] http://smalltalkhub.com/#!/~MasashiUmezawa/PunQLite

Jan. 29, 2015

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

by Werner Kassens

Hi Ben, i also prefer SCI, although i have another reason <g>, it has less letters than MATH and the letters are positioned nearer to each other on my keyboard (good for my one-handed typing approach). SciTalk is a really nice idea i agree. werner On 01/29/2015 04:19 PM, Ben Coman wrote: > MATH seems to constraining. SCI seems good. And I like that suggestion > for SciTalk.

Jan. 29, 2015

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

by blake

You never fail to impress, Steph. Excellent work. On Wed, Jan 28, 2015 at 9:21 AM, stepharo <stepharo(a)free.fr> wrote: > Didier Besset offered his great book "Object-Oriented Implementation of > Numerical Methods > An Introduction with Smalltalk and Java" to the community. > > We would like to thank Didier Besset for his great book and for his gift > of the source and implementation to the community. > > > You can find > â¢ Archive of the original book, with code in both Java and Smalltalk > https://github.com/SquareBracketAssociates/ArchiveOONumericalMethods > > https://github.com/SquareBracketAssociates/ArchiveOONumericalMethods/ > blob/master/NumericalMethods/2015-Jan-WholeBookST-Java.pdf > > > â¢ An abridged version of Didierâs book, without the Java > implementation and reference; our goal is to make the book slimmer and > easier to read. The implementation presented in this book is part of the > SciSmalltalk library. > > https://github.com/SquareBracketAssociates/NumericalMethods > > https://github.com/SquareBracketAssociates/NumericalMethods/blob/master/ > 2015-Jan-WholeBook.pdf > > > â¢ SciSmalltalk library https://github.com/SergeStinckwich/SciSmalltalk > . > > Both book versions are maintained by St Ìephane Ducasse and Serge > Stinckwich. > > 27 Janvier 2015 > > >

Jan. 29, 2015

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