November 2013 - Pharo-users

About validation
by StÃ©phane Ducasse March 11, 2018

March 11, 2018

Hi I read the chapter on validation of the mentoring course book of andres valloud. http://www.lulu.com/fr/fr/shop/andres-valloud/a-mentoring-course-on-smallta… And I love this extension of SUnit. I loved the idea when I saw it for the first time at Lugano (presentation of Leandro Caniglia). I encourage everybody to read it. Now does anybody implemented in Pharo the SUnit extension? I would like to play with it and eventually write a chapter on it for the next book. The idea is so good. Stef

2 1

Re: [Pharo-users] Slot questions
by Paul Davidowitz June 2, 2015

June 2, 2015

To Camillo Bruni: I'm not using any slot image (I only looked over the paper). According to the Pharo book, 'pvt' should be implemented in the mainstream image. To Marcus Denker: There are actually several methods in the image with the 'pvt' prefix. Please update the doc (Pharo book) to remove talking about 'pvt'. It would have saved me a little headache :)

11 15

funny idea Symbol vs. Selector
by stephane ducasse May 14, 2015

May 14, 2015

Hi guys I'm thinking aloud... I was wondering if we could not take advantage of a new class: Selector. MethodDict would only contain selectors and not symbols. I remember that I talked about that with hernan. Stef

8 27

How do I save contents of Workspace into a collection?
by Frank Church Jan. 31, 2015

Jan. 31, 2015

Hi guys, My images are gathering a number of Workspaces whose contents I don't want to delete. I want to create a collection of Workspace contents along this defintion: Description Date Category Content (the actual text in the Workspace). In the final version I would like to be able to select a workspace and simply click a button or a menu item and get a dialog where I can enter the Description, Category and Date with the Workspace contents automatically captured into a text box. Copying and pasting the contents would be okay to start with. Filing it out would be another aspect later. What kind of array would best suited to the task? There is quite a number of them depicted here: http://www.jmcsweeney.co.uk/computing/m206/collections_intro.php What could be the best way to go about it? For those who are curious I am experimenting with the original ideas of Smalltalk where a computer user would do everything in Smalltalk workspace/desktop. I am intrigued by the possibility and somehow it seems eminently doable. -- Frank Church ======================= http://devblog.brahmancreations.com

10 36

if Pharo is key for you
by StÃ©phane Ducasse Jan. 18, 2015

Jan. 18, 2015

Hi guys if Pharo is key for you then you should ask yourself what you did for Pharo recently. Writing code, writing documentation helping closing bug entries, participating to the association, to the consortium... Pharo is not happening from spontaneous generation. Stef

4 6

Slots
by Thomas Worthington May 19, 2014

May 19, 2014

I notice that "Slots" are slated for addition in Pharo 3.0. Is there anywhere I can see which model of "slots" is being suggested? I'm not sure that slots, in the sense of Javascript, are a good idea generally and, in the broader context, I'm very unhappy with the idea of messing with Smalltalk's generally clean syntax by adding new language features. Could the desired effects be achieved by subclassing Behavour or somesuch high-level approach? -- Thomas Worthington

12 22

image resize event
by Usman Bhatti April 11, 2014

April 11, 2014

Hello, I would like to resize all my windows opened inside my image when resizing the image window. Can anyone point me to the hook where I can plug my code for window resizing? For example, it would like to do onImageResize World fitAll. tx, usman

7 7

NeoJSON and inheritance
by Norbert Hartl March 22, 2014

March 22, 2014

How is inheritance supposed to work in NeoJSON? I only figured it out by doing that manually: neoJsonMapping: aMapper super neoJsonMapping: aMapper. (aMapper mappingFor: self) mapInstVar: #longitude; mapInstVar: #latitude. Is there a better way to do? Norbert

3 5

SerialPlugin on MacOS
by Bernat Romagosa Feb. 20, 2014

Feb. 20, 2014

Hi list, Developing a multi-platform application is not so easy when you have to deal with hardware it seems... So I'm having this PrimitiveFailed error on MacOS, using the latest stable VM listed on the pharo-project website on Pharo20: *PrimitiveFailed: primitive #primWritePortByName:from:startingAt:count: in SerialPort failed* The same code works fine both in Gnu/Linux and Win32, so I'm guessing it's a problem with the serial plugin included in this VM. Any ideas? Cheers, Bernat. -- Bernat Romagosa.

5 15

Call for Participation in the Smalltalk Devroom at FOSDEM2014
by Stephan Eggermont Jan. 13, 2014

Jan. 13, 2014

Call for Participation in the Smalltalk Devroom at FOSDEM 2014. http://www.fosdem.org, please forward " A devroom for the Pharo, Squeak, Amber, GST, EtoilÃ©, Seaside, Moose Smalltalk projects & Newspeak as derived language. Smalltalk environments offer a very high development productivity, unmatched by their successors. Come do some pair programming with us and experience yourself the advantages of a real OO environment" The meetup will take place Saturday, February 1, 2014, from 9AM until 5PM, building AW. This room has 72 seats, a VGA video projector and wireless internet. More information will be available later. If there are volunteers to record video content, the FOSDEM organization kindly offered to provide needed equipment & instructions. Please let me know if you would be willing to spend some time pointing a camera at a speaker. Proposals on content and format are welcome. People interested in running a session should send me an email at stephan ( @ ) stack ( dot ) nl with 'FOSDEM2014â in the subject and the following information: - Their name - The project they are associated with - A short bio, to be put on the website along with their speaker name - (optionally) a picture of themselves - The title of their session (which will go on the website and in the booklet) - A abstract describing the session in further detail. - The desired length of the session. - The desired time slot in which they want to hold the session. I will send out updates on a regular basis to the lists and anyone stating his interest. Suggested values for the duration are 55min, 25min, 6m40 (Pecha Kucha). The desired time slot is meant to help you prevent conflicts with other dev rooms in which you might have a talk or your travel arrangements. There are alternative, non smalltalk-specific tracks available: lightning talk and the main track The deadline for submissions is December 31, 23:00 GMT+1. Devroom related URLs: http://www.pharo-project.org http://www.squeak.org/ http://etoileos.com/ http://www.seaside.st/ http://smalltalk.gnu.org/ http://www.moosetechnology.org http://amber-lang.net http://newspeaklanguage.org/ http://www.esug.org First proposal already arrived: Stefan Marr proposed: I could give a presentation on SOM (Simple Object Machine) Smalltalk. I would especially go into detail of the Truffle-based and the RPython (PyPy) based implementations to show modern ways of language implementations with the goal of achieving high performance.

2 1

Using FFI
by Annick Fron Dec. 10, 2013

Dec. 10, 2013

Hi I want to launch a simple init with the following C signature : void gst_init (int *argc, char **argv[]) If I write <apicall: void 'gst_init' (int*, char**) module: 'blabla'> I get a Smalltalk syntax error Annick Fron

7 18

Programmatic Scoped Browsing
by Sean P. DeNigris Dec. 7, 2013

Dec. 7, 2013

I tried: SystemNavigation new environment: RPackage allInstances third asEnvironment; browseAllSelect: aBlock but it still searched the whole image. I looked for examples in the image of manually building an environment/SystemDictionary, but didn't find anything helpful. Thanks. ----- Cheers, Sean -- View this message in context: http://forum.world.st/Programmatic-Scoped-Browsing-tp4724820.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 3

Add menu item to Nautilus context menu on selected packages?
by MartinW Dec. 2, 2013

Dec. 2, 2013

Hi, i have a tool that works on packages. So far i added a wizard to the world menu, but i would rather add a menu item to the Nautilus context menu on selected packages - is this possible? Best regards, Martin. -- View this message in context: http://forum.world.st/Add-menu-item-to-Nautilus-context-menu-on-selected-pa… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 5

Mongo cache vs database objects
by Sabine KnÃ¶fel Dec. 2, 2013

Dec. 2, 2013

Hi Esteban, all, I work with mongo daily an it works fine, I am very happy with it. As you told me, with >>VORepository current reset. I can force re loading all objects from database and resetting the cache completely. This is helpful for development eg. after changing the magritte descriptions. My question: Is there a possibility to make a query and tell voyage that THIS query should be done within the database and NOT within the cached objets? And that all objects and the child objects from this query are loaded freshly from database into the cache. My concrete situation: I want that if the user logs in, his objects are loaded from database and NOT from cache. This means the person, his trips etc. And the question coming along with this: How long does the cache keeps objects/when are they reseted (except the >>VORepository current reset)? If I would never take a new image and never make a reset, would all objects remain in the image (and the database objects wold never be read)? In this case what about the size of the image? Regards Sabine -- View this message in context: http://forum.world.st/Mongo-cache-vs-database-objects-tp4725554.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

4 11

Finalization
by Sean P. DeNigris Nov. 29, 2013

Nov. 29, 2013

I found the following list threads... http://forum.world.st/Finalization-question-td1300962.html mentions #beFinalizable, which doesn't seem to exist. I guess it was just an example, but seems like it should be added, no? In http://forum.world.st/object-finalization-td3771196.html Igor suggested that the key is to do: WeakRegistry default add: obj. This guarantees? that #finalize will be called when the object is garbage collected. I'm asking regarding my recent work wrapping the FMOD sound library with NativeBoost. I'm thinking my NBExternalObjects should release their resources when no longer referenced. I want to say: FmodSound>>#finalize self primReleaseSound: handle. So I've pieced together that I would have to also write: FmodSound>>new instance := super new whatever; beFinalizable; yourself. Object>>#beFinalizable WeakRegistry default add: self. Am I correct that: 1. The above code would cause the resource to be safely released when the sound object was garbage collected? 2. This approach would be a good way to manage these types of resources? Any hints would be appreciated as to the best way to accomplish managing these... Thanks! ----- Cheers, Sean -- View this message in context: http://forum.world.st/Finalization-tp4726046.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 2

reporting bugs
by Nicolai Hess Nov. 29, 2013

Nov. 29, 2013

What do I have to do for getting access to pharo.fogbugz.com for bug reporting? regards Nicolai

9 16

What is "Primitives"?
by Nicolai Hess Nov. 29, 2013

Nov. 29, 2013

Looking at the code for DiskStore>>basicEntryAt: I find this code: "Primitives lookupDirectory: encodedPath filename: encodedBasename)" What is this "Primitives" not a class? I am suprised there is some code that I can not find the source for. Ok, it has something to do with vm primitives, and I know that code like <primitive: 'primitiveDirectoryEntry' module: 'FilePlugin'> is in the vmmaker-package for FilePlugin. BTW it is terrible hard to load vmmaker in a "normal" image. Now I use the generator.image from pharo http://files.pharo.org/vm/src/. But even in this image it is not possible to load the vmmaker tool.

4 6

Any configuration file parsing library
by Damien Cassou Nov. 29, 2013

Nov. 29, 2013

Hi, I'm looking for a library to parse configuration files. I have no configuration format yet so I'm open. I was thinking of a typical INI format: [section1] param1=value1 param2=value2 [section2] param1=value3 ... -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

6 9

Snap4Arduino pre-alpha release
by Bernat Romagosa Nov. 28, 2013

Nov. 28, 2013

Hi list! I know people don't usually make announcements of this kind here, but I've gotten much help from this list on SerialPlugin and NativeBoost questions, so I wanted to let you know I've managed to release the pre-alpha version of Snap4Arduino. Snap! is a Scratch reimplementation written in Javascript by Jens MÃ¶nig and Brian Harvey, with advanced programming concepts such as first order functions, closures or continuations. As Brian Harvey puts it: *In the glory days of the MIT Logo Lab, we used to say, âLogo is Lisp > disguised as BASIC.â Now, with its first class procedures, lexical scope, > and first class continuations, Snap! is Scheme disguised as Scratch.* Snap4Arduino is a modification of Snap! plus a server written in Pharo that allow you to live-program Arduino boards very easily. http://s4a.cat/snap I've used Zinc as a web and websockets server, and the Arduino package to achieve communication with the board. I've decided to not wait for the MacOS CogVM serial port bugfix because I really wanted to release something before the end of November, but everything else is in place, so once the VM is fixed, it'll be just plug and release! :) Thanks a lot for your help! -- Bernat Romagosa.

2 4

[Voyage] #selectAll:sortBy: not implemented?
by VÃctor Casado Nov. 28, 2013

Nov. 28, 2013

Hi all! I've recently started to use MongoDB and Voyage in a project of my work (I find it too interesting!) following this tutorial: https://ci.inria.fr/pharo-contribution/job/PharoForTheEnterprise/lastSucces… I've been facing issues to sort the elements of my database, specifically using the /selectAllSortBy:/ message, which I see is not fully implemented. Maybe I am wrong? Instead of this, I used /selectMany:sortBy:/ and it does the trick, but I'd like to know if the previous one will be implemented some day. Regards, PS: Sorry but I don't know if this has been discused, if so, I didn't found it. -- View this message in context: http://forum.world.st/Voyage-selectAll-sortBy-not-implemented-tp4725324.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 4

NativeBoost: Regenerate Native Code
by Sean P. DeNigris Nov. 28, 2013

Nov. 28, 2013

How do I tell NativeBoost to regenerate all naive code for a class e.g. after changing the implementation of #nbCallingConvention? N.B. to NativeBoost newbies like myself, this is a *huge* potential pitfall that's difficult to diagnose. I was thinking, "well, I changed the calling convention and the vm is still crashing, so that can't be the problem" not realizing that the callouts never picked up the change ----- Cheers, Sean -- View this message in context: http://forum.world.st/NativeBoost-Regenerate-Native-Code-tp4725651.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 2

Is there a template engine in Pharo
by Damien Cassou Nov. 28, 2013

Nov. 28, 2013

Hi, I'm looking for a template engine for Pharo. What I mean by that is the same as String>>format: but much more powerful. Thanks -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

4 8

may I be added to PharoExtras?
by Paul DeBruicker Nov. 27, 2013

Nov. 27, 2013

Hi - I'd like to get XMLParser working in Pharo 1.4. The recent updates broke it because FileSystem class>>#workingDirectory does not exist. I also have another ConfigurationOfJSON and I think Postmark to upload. Thanks Paul

2 4

Re: [Pharo-users] Fresh downloaded Pharo 2.0 and Pharo 3.0 doesn't run on macos (mavericks)
by Joachim Tuchel Nov. 27, 2013

Nov. 27, 2013

Hi That's gatekeepers way of telling you the app is not from a certified developer. You need to start it once with ctrl-click and answer yes Joachim vmusulainen <vmusulainen(a)mail.ru> schrieb: >Hi all, > >I downloaded pharo 3.0 and pharo 2.0 right now and I can't run both apps. >I get following message for Pharo 2.0 (For Pharo 3.0 appears same message): > >"âPharo2.0.appâ is damaged and canât be opened. You should move it to the >Trash. >Google Chrome.app downloaded this file today at 2:39 from >www.pharo-project.org." > >Have someone similar problems? > > > > > >-- >View this message in context: http://forum.world.st/Fresh-downloaded-Pharo-2-0-and-Pharo-3-0-doesn-t-run-… >Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

4 8

Roassal question
by Goubier Thierry Nov. 27, 2013

Nov. 27, 2013

Hi, would anybody knows how to do a nested layout with reversed radial tree in Roassal? I'd like to build a grid of reversed radial trees... It works with trees, but not with the radial layout. Thanks, Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des SystÃ¨mes Temps RÃ©el EmbarquÃ©s 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95

2 2