January 2011 - Pharo-users - lists.pharo.org

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

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permutations / combinations implementation
by Tudor Girba Nov. 2, 2011

Nov. 2, 2011

Hi, Is there an implementation of permutations and combinations of a collection? Cheers, Doru -- www.tudorgirba.com "Presenting is storytelling."

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Z3950 on OSX: module yaz3 not found
by laurent laffont April 25, 2011

April 25, 2011

Hi, I want to use http://www.squeaksource.com/Z3950 Following install instructions, I've dowloaded yaz sources (I've tried 4.1.2 and 3.0.52) as it seems there's no binary for OSX, ./configure && make && make install. Then using latest Seaside One Click image I've copied /usr/local/lib/*yaz* in Seaside.app/Contents/MacOS $ ls ~/Downloads/Seaside.app/Contents/MacOS/ Squeak VM Opt libyaz.a libyaz.la libyaz_icu.a libyaz_icu.la libyaz_server.a libyaz_server.la libyaz.3.dylib libyaz.dylib libyaz_icu.3.dylib libyaz_icu.dylib libyaz_server.3.dylib libyaz_server.dylib But then I have a External Module Not Found on YAZPQFFFILibrary>>createParser " YAZPQDFFILibrary default createParser " <cdecl: YAZPQFParser 'yaz_pqf_create' (void) module: 'yaz3'> ^ self externalCallFailed Any hint ? Cheers, Laurent Laffont -- FFI newbie Pharo Smalltalk Screencasts: http://www.pharocasts.com/ Blog: http://magaloma.blogspot.com/

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Help (perfect for newcomers) migrating a technical FAQ
by Mariano Martinez Peck April 9, 2011

April 9, 2011

Hi folks. I had a good idea and and it perfect for someone that wants to help and don't know how. It is not the most entertained task, but I promise you will learn a lot. Mostly, if you are newcomer. The idea is basically to migrate the FAQ that is here: http://scg.unibe.ch/wiki/faq/pharofaq to a new section in the collaborative Pharo book: http://book.pharo-project.org/ So....any takers ? Let us know so that we generate a new user in the Book The idea is also to check whether what is says is still correct for pharo or if it needs an update. Or even how to improve it (from the view of a newcomer). Thanks Mariano

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Left recursion in PetitParser
by Andrew Black Jan. 31, 2011

Jan. 31, 2011

I have a PetitParser question. A small part of my grammar is like this: expression := constant / namedSend / ... namedSend := receiver dot namedMessage / ... receiver := expression This is of course left-recursive. I believed the "all the rest is magic" blurb and just went ahead and wrote it as given above. I get an infinite recursion when I run the parser. I know how to left-factor the grammar by hand. But should I have to? How powerful is thy magic, Lukas? Andrew

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Scrolling in a Morphic game
by Aidan Gauland Jan. 29, 2011

Jan. 29, 2011

Hello, I am developing a game in Morphic -- nothing serious; just a spare time project -- and I have come to a tricky part: the viewport. So far, I have just put my Morphs in a PasteUpMorph for testing, but now I need to have a viewport to a (game) world that is larger than the screen, and be able to pan/scroll the view around the world. I really have no idea how I could or should do this in Morphic. Maybe subclass PasteUpMorph and override #drawSubmorphs? Can anyone here offer any advice with this? Regards, Aidan

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Screencast proposition: Watch someone read code.
by Helene Bilbo Jan. 29, 2011

Jan. 29, 2011

Hi, i have a proposition for a Pharo-Screencast: I would love to look over someoneâs shoulder while she/he is *reading* code. A possible plot would be to download something from squeaksource and then trying to make sense out of it - and talking while doing so. (It would also be good to see all the relevant functions of the browser in action). Background: While i have read some books now (blue book, pharo by example, seaside by example, best practice patterns) i have never actually seen people programming. So i absolutely miss the craftsmanship side of things. Anyway thank you for Pharocasts. Best regards, Helene. -- View this message in context: http://forum.world.st/Screencast-proposition-Watch-someone-read-code-tp3244… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Making a .st file from the source of a method
by Sean P. DeNigris Jan. 29, 2011

Jan. 29, 2011

I have a class that I use to set up my images. A subclass has a method: setupScript (Smalltalk at: #UpdateStreamer) new updateFromServer. "Do other stuff..." I want to save the statements of the method above in a .st file to pass as an argument to the vm. That's all working, but in order to retrieve the two statements above, I do: setupScriptContents | scriptMethod sourceString sourceStringWithBracketsStripped | scriptMethod := PharoTrunkImage compiledMethodAt: #setupScript. sourceString := scriptMethod methodNode body asString. sourceStringWithBracketsStripped := sourceString copyFrom: 3 to: sourceString size - 2. ^ sourceStringWithBracketsStripped. That works, but I don't like it. What's the best way to do this (or is this it)? Thanks. Sean -- View this message in context: http://forum.world.st/Making-a-st-file-from-the-source-of-a-method-tp324624… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Polymorph example
by laurent laffont Jan. 28, 2011

Jan. 28, 2011

Hi, I've written a tiny little application to prepare a screencast on Polymorph / GUI. As I'm far from being expert on this, can someone check that it is done "the right way" (especially on how to manage OK/Cancel ) ? Gofer it squeaksource: 'LaurentLSandbox'; package: 'AddressBook'; load. (Smalltalk at:#ContactListEditor) open. Thanks. Laurent Laffont - @lolgzs <http://twitter.com/#!/lolgzs> Pharo Smalltalk Screencasts: http://www.pharocasts.com/ Blog: http://magaloma.blogspot.com/

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Downloading a JPEG
by Sean P. DeNigris Jan. 28, 2011

Jan. 28, 2011

Is there a way to save a JPEG from the web to a file in Pharo? I can open it as a Form, but I also want a copy of the original saved. Thanks. Sean -- View this message in context: http://forum.world.st/Downloading-a-JPEG-tp3243718p3243718.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Fwd: Serial Port
by Luc Fabresse Jan. 27, 2011

Jan. 27, 2011

---------- Forwarded message ---------- From: Serge Stinckwich <serge.stinckwich(a)gmail.com> Date: 2011/1/27 Subject: Re: [Pharo-users] Serial Port To: Luc Fabresse <luc.fabresse(a)gmail.com> Cc: A friendly place where any question about pharo is welcome < pharo-users(a)lists.gforge.inria.fr>, SÃ©verin Lemaignan < severin.lemaignan(a)laas.fr> On Thu, Jan 27, 2011 at 2:49 PM, Luc Fabresse <luc.fabresse(a)gmail.com> wrote: > Hi all, > I did not remember well the discussions about serial ports. > But there are some infos there: > http://www.mail-archive.com/pharo-project@lists.gforge.inria.fr/msg31411.ht… > http://code.google.com/p/pharo/issues/detail?id=1057 > > Perhaps Serge knows more about it now? The code is actually mostly the work of SÃ©verin Lemaignan, so if we want to integrate his code in Pharo, we should ask him to sign the Pharo licence agreement: http://code.google.com/p/pharo/wiki/ListOfOkCommitters This code is already included in the last version of Squeak. I dunno about the scratch version. This is different from the Squeak version ? Regards, -- Serge Stinckwich UMI UMMISCO 209 (IRD/UPMC), Hanoi, Vietnam Every DSL ends up being Smalltalk http://doesnotunderstand.org/

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Serial Port
by Joan GÃ¼ell Jan. 27, 2011

Jan. 27, 2011

Hello We are developing software to interact with small robots for educational purposes. To do this we need to use the serial port. SerialPort class that includes Pharo does not work on mac or linux, because itÂ´s not able to open ports by name. It would be interesting that future versions include a SerialPort that would work in these circumstances. we are using since a time aÂ´go the plugin that comes with Scratch, with this we just copy the plugins in the folder of the VM, the Plugin that comes with the VM Scrath, and add to the image of the image classes of Scratch , ScratchPlugin and SerialPort2.Up to date this has worked on all VM including the latest Cog. It works on Linux, Mac or Windows.We wory that future versions will lose support. The source code for the plugins can be found on: http://info.scratch.mit.edu/Source_Code ScratchPluginSrc1.4.zip Joan GÃ¼ell jguell(a)e-citilab.eu Joan GÃ¼ell jguell(a)e-citilab.eu

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TestMock v-9 published; now works with Pharo 1.1.1
by Anindya Haldar Jan. 26, 2011

Jan. 26, 2011

Dear Smalltalkers, I am glad to make an updated version (v9) of the mocking framework TestMock available with added Pharo 1.1.1 support. Previously reported v8 issues arising from the deprecation of KeyedSet and some other changes with TestCase and Boolean classes in Pharo 1.1.1 have been fixed. This version continues to work with Pharo 1.0 and Seaside-2.8 dev images as before. Here is the link to the project: http://www.squeaksource.com/TestMock.html Happy smalltalking! Regards, - Anindya Haldar

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Minimal pharo
by Annick Fron Jan. 25, 2011

Jan. 25, 2011

Hi all, I have now tried the minimal images indicated by Torsten and Stephane, on Windows it amounts to 9.1 Mega in memory ... Would it be smaller on Linux ? Yet, I still need a shoe horn, having only 8 M ram from which 1.5 is already taken by the kernel... Any idea to downsize even more ? Best regards Annick Fron

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Re: [Pharo-users] Polymorph example
by laurent laffont Jan. 25, 2011

Jan. 25, 2011

Thank you very much Gary Laurent On Mon, Jan 24, 2011 at 12:48 PM, Gary Chambers <gazzaguru2(a)btinternet.com>wrote: > Hi, > > just a few observations ;-) > > The openModal might be better like this (so the text fields align nicely): > > openModal > |builder dialog content firstName| > > builder := UITheme builder. > content := (builder newLabelGroup: { > 'First name' -> (firstName := (builder > newTextEntryFor: contact getText: #firstName setText: #firstName: help: > 'Enter the first name of the contact') > acceptOnCR: false; > minWidth: 200). > 'Last name' -> ((builder > newTextEntryFor: contact getText: #lastName setText: #lastName: help: > 'Enter the last name of the contact') > acceptOnCR: false; > minWidth: 200). > }). > > dialog := builder newPluggableDialogWindow:'Edit contact' for: content. > dialog rememberKeyboardFocus: firstName. > builder openModal: dialog. > > dialog cancelled ifFalse: [self doOnOK]. > > > The #useDefaultOKButton was redundant (since model was set before sending > (the #for: bit)). > Resetting the model after chosing the buttons would work though. That's why > you get the default > OK/Cancel (rather than the single OK you would have had via > #useDefaultOKButton). > Disabling the acceptOnCR for each text frield allows the default dialog > handling for the return key (defaults to OK). > Normally the initial keyboard focus for a dialog is the default button, if > specified. Remembering the first name field > prior to opening will give that field focus. > > > It might be nice to use the enablement feature for the buttons on the main > contact list: > > > contactSelectedIndex > ^ selectedContactIndex ifNil: [selectedContactIndex := 0] > > > > contactSelectedIndex: aSmallInteger > > selectedContactIndex := aSmallInteger. > self > changed: #contactSelectedIndex; > changed: #hasSelectedContact > > > > hasSelectedContact > > ^selectedContactIndex > 0 > > > addButtonClick > |newContact| > newContact := Contact new. > > ContactEditor new > contact: newContact; > onOK: [ Contact database add: newContact. > self changed: #contacts. > self contactSelectedIndex: Contact database size ]; > openModal > > > removeButtonClick > > [Contact database removeAt: selectedContactIndex] > on: Error > do: [UITheme builder alert: 'Cannot remove selected contact.']. > self > contactSelectedIndex: (self contactSelectedIndex min: Contact database > size); > changed: #contacts > > > > open > |builder content| > builder := UITheme builder. > content := builder newColumn: { > builder > newListFor: self > list: #contacts > selected: #contactSelectedIndex > changeSelected: #contactSelectedIndex: > help: 'contacts'. > builder newRow: { > builder newButtonFor: self action: #addButtonClick label: 'Add' help: > 'Create a new contact'. > builder newButtonFor: self action: #removeButtonClick getEnabled: > #hasSelectedContact label: 'Remove' help: 'Remove selected contact'. > builder newButtonFor: self action: #editButtonClick getEnabled: > #hasSelectedContact label: 'Edit' help: 'Edit selected contact' }}. > > (content openInWindowLabeled: 'Contacts') extent: 400@500. > > > > > Nice example. Good luck. > > Regards, Gary > > ----- Original Message ----- > *From:* laurent laffont <laurent.laffont(a)gmail.com> > *To:* A friendly place where any question about pharo is welcome<pharo-users(a)lists.gforge.inria.fr> > *Cc:* gazzaguru2(a)btinternet.com > *Sent:* Sunday, January 23, 2011 1:39 PM > *Subject:* Polymorph example > > Hi, > > I've written a tiny little application to prepare a screencast on Polymorph > / GUI. As I'm far from being expert on this, can someone check that it is > done "the right way" (especially on how to manage OK/Cancel ) ? > > Gofer it > squeaksource: 'LaurentLSandbox'; > package: 'AddressBook'; > load. > (Smalltalk at:#ContactListEditor) open. > > > Thanks. > > > Laurent Laffont - @lolgzs <http://twitter.com/#!/lolgzs> > > Pharo Smalltalk Screencasts: http://www.pharocasts.com/ > Blog: http://magaloma.blogspot.com/ > >

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Multiple Worlds for Pharo *stable*
by Aidan Gauland Jan. 25, 2011

Jan. 25, 2011

Hello, I recently saw the article Multiple Worlds for Pharo <http://seandenigris.com/blog/?p=767>, and I tried loading it from PharoInbox, but got the following Warning. ------------------------------------------------------------ This package depends on the following classes: GLMUITheme You must resolve these dependencies before you will be able to load these definitions: GLMOrangeUITheme GLMOrangeUITheme classSide>>baseSelectionColor GLMOrangeUITheme classSide>>lightSelectionColor GLMOrangeUITheme classSide>>setDejaVuFontsLarge GLMOrangeUITheme classSide>>setDejaVuFontsSmall GLMOrangeUITheme classSide>>themeName GLMOrangeUITheme classSide>>veryLightSelectionColor GLMOrangeUITheme>>buttonMouseOverFillStyleFor: GLMOrangeUITheme>>buttonSelectedFillStyleFor: GLMOrangeUITheme>>buttonSelectedMouseOverFillStyleFor: GLMOrangeUITheme>>configureWindowBorderFor: GLMOrangeUITheme>>configureWindowDropShadowFor: GLMOrangeUITheme>>controlButtonMouseOverFillStyleFor: GLMOrangeUITheme>>controlButtonNormalFillStyleFor: GLMOrangeUITheme>>dialogWindowPreferredCornerStyleFor: GLMOrangeUITheme>>glamorousBaseSelectionColorFor: GLMOrangeUITheme>>listNormalBorderStyleFor: GLMOrangeUITheme>>menuItemSelectedFillStyleFor: GLMOrangeUITheme>>scrollPaneDisabledBorderStyleFor: GLMOrangeUITheme>>scrollPaneNormalBorderStyleFor: GLMOrangeUITheme>>selectionBarColor GLMOrangeUITheme>>selectionColor Select Proceed to continue, or close this window to cancel the operation. ------------------------------------------------------------ I can't figure out what package I need to load first to resolve this dependency. I'm using Pharo 1.1.1 Latest update: #11414. Can anyone help me out here? I really don't want to use unstable just to get this one feature. Thanks, Aidan

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Infinite loop is not stopped by Cmd+.
by Alex Schenkman Jan. 24, 2011

Jan. 24, 2011

Hi List, Recently I had a bug causing an infinite loop, which in turn hanged the image. I thought that Cmd+. would allow me to stop this, but this is not the case. Adding and executing this method hangs my image and Cmd+. does not stop it. MyClass>>infinite ^self infinite Is this the right behavior? Thanks in advance!

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Error in logging chapter of "Pharo collaborActive Book"
by Panu Suominen Jan. 22, 2011

Jan. 22, 2011

I was not sure if this is the right list. There is example like this in logging chapter of the Pharo book: Gofer new project: 'Logging'; package: 'ProcessSpecific'; package: 'Logging'; load It does not work. Maybe it should be: Gofer new squeaksource: 'Logging'; package: 'ProcessSpecific'; package: 'Logging'; load -- Panu

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Pharo on Windows
by Andrew Black Jan. 22, 2011

Jan. 22, 2011

I just started using Pharo on windows for the first time. First, I should say that I'm really impressed. Pharo seems much more solid than when I last tried it. I programmed all day without getting a walkback! All of the tools "just worked". Well done! It's a lot of work creating a solid user experience, but you have done it. Now I have some Windows-specific questions. I'm a real windows newbi, so please be patient. After I downloaded Pharo.app, I dragged the whole directory to a convenient place, and tried to launch the Pharo.lnk file, just like the readme file says. But there is no such file visible in windows explorer (even though I have "don't show extensions for known file types" box unchecked. The file shows up as Pharo. Anyway, I figured that it was really Pharo.lnk (Cygwin tells the truth) and double-clicked on it. This brings up an alert that says C:\Users\<username>\Desktop\OneClick.app\Contents\Windows\Squeak.exe the specified path does not exist. Is this because I moved the downloaded package? Shouldn't the symlink be relative? Anyway, I looked in ...\ Contents\Windows\, double-clicked on Squeak.exe, and everything started up just fine. I worked all day, and saved my image a few times using the Save menu on the desktop. Each time, I get the usual confirmatory dialog in the Transcript. Overnight, my machine shut down. Today, I relaunch Squeak.exe, and of course I get the virgin image! Where is the image that I've been using? The Windows "search this computer" tool can't find it! What about my package cache? Eventually I find everything in Pharo.app\Contents\Resources, but not until I've had a few moments of panic! Questions: Is this the appropriate behaviour on Windows, or was there a user error on my part? Is it OK to move my image somewhere else? How can I change the current directory for Pharo on Windows? OK, so now that I've found my image file, how to I re-launch it? I double-clicked on the .image file, and I got a dialog saying that Windows didn't know what program to use to open it. Fair enough. So I told it to use Squeak.exe. Pharo launches, and I get: "Error: invalid utf8 input detected". It's treating the image as if it were a source file: it has opened a MultiByteFileSTream on it. That's not right. How do I re-launch my Pharo image? Andrew

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Where do I find KeyedSet?
by Alex Schenkman Jan. 22, 2011

Jan. 22, 2011

Hi List, I'm trying to use the TestMock package in a Pharo-1.1.1-OneClick image, and it uses KeyedSet. Where can I find this class? Is there any tool to lookup which package in SqueakSource contains a specific class? Thanks in advance!

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Pharo on Windows
by Torsten Bergmann Jan. 21, 2011

Jan. 21, 2011

Looks like you use the "Pharo one click image" which is multiplatform. Why dont you use the Pharo installer for Windows which I created. - the download is smaller (you dont get the Linux/Max VMs) - it is better integrated into Windows You can find it when you scroll down at: http://pharo-project.org/pharo-download Here is the direct link: http://gforge.inria.fr/frs/download.php/27305/setup_pharo1.1-11411-release1… Bye Torsten http://astares.blogspot.com -- NEU: FreePhone - kostenlos mobil telefonieren und surfen! Jetzt informieren: http://www.gmx.net/de/go/freephone

1 0

soft write barrier
by Norbert Hartl Jan. 20, 2011

Jan. 20, 2011

I'm thinking about tracking changes to objects. I had a look at WriteBarrier on squeaksource. My goal would be to have something more soft that does not need to track class shape changes and most of the system notifications, just the state of an object. A second goal is to avoid having to use primitives but that shouldn't be too hard. The objects will be materialized via http and I want to have a good way to track those changes. I can think of some approaches but wanted to ask for the clever ones :) What possibilities do you see to achieve this? thanks, Norbert

1 0

Pharo and network
by Adrien BARREAU Jan. 18, 2011

Jan. 18, 2011

Hello, I read these documents: http://book.pharo-project.org/book/networking/Socket http://wiki.squeak.org/squeak/325 but I still don't get what I want with pharo. Here is the idea: I want a socket to listen a port while pharo is launched as a deamon. I tried to test the sockets with this idea: - creation of two sockets in two workspaces - server: | server st | st := String new. server := Socket newTCP. server listenOn: 12345 backlogSize: 4. server receiveDataInto: st - client: | s | s connectTo: ('127.0.0.1' asByteArray asSocketAddress) port: 12345. s sendData: 'Hello' - the connectTo:port: fails, and I don't understand why So I have no idea ... Adrien.

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TDD facilities: missing ctrl+t
by Alex Schenkman Jan. 14, 2011

Jan. 14, 2011

Hi list, I've installed the TDD-Facilities package. Pressing ctrl+t, or ctrl+r does not run the test, :-( I'm pressing it while editing a test method, in the default browser of a Pharo-1.1.1-OneClick image. Any clues on what I might be missing? Thanks again!

1 1

PharoConf Annecy 2011
by laurent laffont Jan. 13, 2011

Jan. 13, 2011

Hi, PharoConf Annecy will took place at IMUS (UniversitÃ© of Savoie), 10th February. Website here: http://pharoconf-annecy.seasidehosting.st/ (in french, but google translate starts to be wonderful :) It's a local event focused on real code, coding-dojo, katas using Pharo. If you're not far from Annecy, welcome ! Laurent Laffont Pharo Smalltalk Screencasts: http://www.pharocasts.com/ Blog: http://magaloma.blogspot.com/

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