September 2014 - Pharo-dev - lists.pharo.org

New methods for the String class
by Daniela Meneses July 31, 2015

July 31, 2015

Hi to all, As you may know I'm working on in some improvements for the String class. Until now I implemented some missing tests. Right now I'm looking forward to add new methods that could be useful based on Ruby API ( http://www.ruby-doc.org/core-2.1.0/String.html) These are a few of the methods that I'm planning to implement: - chomp(separator=$/) -> new_str - chop() -> new_str - ljust(integer, padstr='') ->new_str - next -> new_str - partition(sep) -> [head, sep, tail] Could you help to find out if these methods are already available for the String class? If you have any idea of new methods for the string class, will be really welcome. -- Cheers , Daniela Meneses

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MongoTalk: new place on smalltalkhub
by FranÃ§ois Stephany July 23, 2015

July 23, 2015

Hi, I've just created a new team for MongoTalk on SmalltalkHub: http://www.smalltalkhub.com/#!/~MongoTalkTeam The old repo (http://www.smalltalkhub.com/#!/~francois/MongoTalk) will stay just in case some scripts rely on it but you should update to the new repo: http://www.smalltalkhub.com/#!/~MongoTalkTeam/mongotalk I've created a version 1.5.1 in the Metacello configuration to reflect the repo migration. Shout at me if I missed something! Cheers, Fa (Many thanks to Norbert for pushing the migration ;)

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ctrl+a is seen as ctrl+home windows
by Tudor Girba May 31, 2015

May 31, 2015

Hi, I am on Windows, using Pharo 3.0, and I am trying to get the keybindings to work in Rubric using Windows convention (so, Ctrl instead of Cmd as a modifier), It worked reasonably well, but the problem is that somehow Ctrl+a is mapped to Ctrl+Home. The problem is not specific to Rubric as I can detect the same behavior in the regular PluggableTextMorph. Does anyone have an idea of where the problem comes from? Doru -- www.tudorgirba.com "Every thing has its own flow"

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[Pharo-project] RTF reader/writer
by StÃ©phane Ducasse April 8, 2015

April 8, 2015

Hi guys Do you know if there is a library somewhere in Smalltalk to deal with RTF writing/saving? Stef

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Keyboard Event Weirdness
by Sean P. DeNigris March 2, 2015

March 2, 2015

I put the following halt in HandMorph>>#handleEvent: anEvent isKeyboard ifTrue: [Transcript show: anEvent printString, ' keyChar: ', anEvent keyCharacter asString, ' keyValue: ', anEvent keyValue asString; cr]. Then I typed 'hi' in a Workspace and hit Cmd+a. Look at the weird Transcript output... [keyDown ''] keyChar: keyValue: 4 [keystroke 'h'] keyChar: h keyValue: 104 [keyUp ''] keyChar: keyValue: 4 [keyDown ''] keyChar: keyValue: 34 [keystroke 'i'] keyChar: i keyValue: 105 [keyUp ''] keyChar: keyValue: 34 [keyDown '<Cmd->'] keyChar: keyValue: 0 [keystroke '<Cmd-a>'] keyChar: a keyValue: 97 [keyUp '<Cmd->'] keyChar: keyValue: 0 It seems the keyUp/Downs do not have the correct charCode and the keyValue is different than the keystroke for the same key. What's going on here? ----- Cheers, Sean -- View this message in context: http://forum.world.st/Keyboard-Event-Weirdness-tp4737056.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

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[DEV] Systemd socket activation patch for the VM
by Max Leske Nov. 14, 2014

Nov. 14, 2014

Hi folks As promised a long time ago my colleague Nik Lutz has finalized the patch for the VM that enables socket activation with Systemd. I will quickly go over what the patch is supposed to achieve, how we plan to use socket activation and what (minimal) changes are necessary. Systemd Socket Activation: Systemd opens a (network-) socket and waits for connections. When the first client connects the assotiated service (VM) is started. Systemd indicates via environment variable (LISTEN_FDS) that it opened a network socket. Detailed documentation on socket activation with Systemd can be found here: http://0pointer.de/blog/projects/socket-activation.html Our scenario for socket activation: At Cmsbox we have hundereds of images running on a server, all of which listen on a dedicated network port for incoming connections. The server is powerful enough to run all these processes concurrently, especially since not every image receives requests all the time. With socket activation we could further lower the server load and free up resources for images with a high request rate. Images that donât receive any requests for a specified amount of time can be suspended automatically and reactivated when a request comes in. The VM Patch: The attached patch tries hard to be minimal. It defines a new socket type (ProvidedTCPSocketType) which you will also find in the image (Socket>>newSystemd). ProvidedTCPSocketType is special in that it can refer to an existing TCPSocket and does not necessarily entail the creation of a new socket. The changes in the image: - Socket>>newSystemd tries to open a new Systemd socket. - TCPListener>>haveSystemdAssignedPort tests if the LISTEN_FDS environment variable has been set by Systemd for the current process. - TCPListener>>primEnvironmentAtSymbol is a utility method that we need to check for the environment variable (IMPORTANT: copied from OSProcess; uses the OSProcess plugin) - TCPListener>>pvtNewListener: has been modified to include the check for the Systemd port. If the socket has been assigned by Systemd, use a Systemd socket, a TCP socket otherwise Quick Howto: - Adapt path to vm and image in pharo@.service - Take a Seaside image and FileIn systemd.cs (tested with http://seaside.st/distributions/Seaside-2.8.4.zip) - Save as 9999.image - Copy pharo@.service and pharo@.socket to /etc/systemd/system - As root run: systemctl daemon-reload systemctl start pharo(a)9999.socket - Open http://localhost:9999/seaside/config [- systemctl stop pharo(a)9999.socket] -> Upon connection pharo(a)9999.socket starts: pharo(a)9999.service (which would start .../9999.image) You can see this in action in the following screencast: http://youtu.be/MVPLZNKg5j8 We hope that this patch (or some version of it) will find its way into the VM. If you have any questions please feel free to ask. Cheers, Max (on behalf of Nik and the rest of Netstyle.ch)

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Spec Understandability
by Sean P. DeNigris Oct. 19, 2014

Oct. 19, 2014

What is one supposed to do with an error like this? It's about as readable as a C++ template error ;) PanelMorph(Object)>>doesNotUnderstand: #layout: SpecInterpreter>>actionToPerformWithSelector:arguments: SpecInterpreter>>performNextSelectorAndIncrementIndex SpecInterpreter>>interpretASpec:selector: SpecInterpreter>>interpretASpec:model:selector: SpecInterpreter class>>private_interpretASpec:model:selector: SpecInterpreter>>performNextSelectorAndIncrementIndex in Block: [ :each | self class private_interpretASpec: each ...etc... Array(SequenceableCollection)>>collect: SpecInterpreter>>performNextSelectorAndIncrementIndex SpecInterpreter>>interpretASpec:selector: SpecInterpreter>>interpretASpec:model:selector: SpecInterpreter class>>private_interpretASpec:model:selector: SpecInterpreter>>computeSpecFrom:selector: SpecInterpreter>>retrieveSpecFrom:selector: SpecInterpreter>>interpretASpec:selector: SpecInterpreter>>interpretASpec:model:selector: SpecInterpreter class>>private_interpretASpec:model:selector: SpecInterpreter>>performNextSelectorAndIncrementIndex in Block: [ :each | self class private_interpretASpec: each ...etc... Array(SequenceableCollection)>>collect: SpecInterpreter>>performNextSelectorAndIncrementIndex SpecInterpreter>>interpretASpec:selector: SpecInterpreter>>interpretASpec:model:selector: SpecInterpreter class>>private_interpretASpec:model:selector: SpecInterpreter class>>private_buildWidgetFor:withSpec: (ComposableModel)>>private_buildWithSpec: (ComposableModel)>>private_buildWithSpec SpecInterpreter>>returnInterpretationOf: SpecInterpreter>>interpretASpec:selector: SpecInterpreter>>interpretASpec:model:selector: SpecInterpreter class>>private_interpretASpec:model:selector: ----- Cheers, Sean -- View this message in context: http://forum.world.st/Spec-Understandability-tp4778370.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

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Tests around Pharo
by Mathieu Schepens Oct. 16, 2014

Oct. 16, 2014

As students of Master 2 IAGL from Lille 1 university (France), four of us are asked to develop some tests around an open-source project. Among proposed projects, we decided to contribute to Pharo. We'll have to develop 15-20tests (isolated/automated/reproducible/quick/good code coverage), and we are wanting them to be as much useful as possible for developers. Where (in the project) could it be useful to develop some tests ? Do you have advices/instructions for us in order to develop them ? We are new with Pharo and Smalltalk, and are having about 8-10hours available per developer. Best regards, Mathieu Schepens

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Working configuration of OS and Graphiccard for Woden
by Nicolai Hess Oct. 12, 2014

Oct. 12, 2014

Is Woden supposed to work on windows? I tried Gofer new smalltalkhubUser: 'ronsaldo' project: 'Woden'; package: 'ConfigurationOfWoden'; load. (Smalltalk at: #ConfigurationOfWoden) loadBleedingEdge on windows but it failed (some NB error). I just want to know if anyone tried woden on Windows already. I tried this on linux too, but it fails. (But I wasn't able to run Roassal3D or NBOpenGL on my linux box so I hadn't high expectations, but at least on my windows box I could get NBOpenGL working) Nicolai

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[ANN] Test Coverage with Hapao
by Alexandre Bergel Oct. 10, 2014

Oct. 10, 2014

Dear all, We are happy to release Hapao2 for Pharo. Ricard Jacas and Alejandro Infante put quite some work on Spy2 (an Ã¼ber cool profiling framework for Pharo) and Hapao2. Hapao2 is about assessing the test coverage of your code and is a major revamp of Hapao1, which was presented a couple of years ago by Vanessa. Hapao2 does not only list covered and uncovered methods, as most test coverage tool on Earth will do. Hapao gives a great visualization to easily navigate in your code, assess its complexity, and give you a great visual output telling its coverage. You need Roassal in your image: Gofer new smalltalkhubUser: 'ObjectProfile' project: 'Roassal2'; package: 'ConfigurationOfRoassal2'; load. (Smalltalk at: #ConfigurationOfRoassal2) load and you need S2py: MCHttpRepository location: 'http://smalltalkhub.com/mc/ObjectProfile/S2py/main' user: '' password: '' New entries will appear in the world menu: You can run the test coverage on : - the class classes you have modified, - on a particular - on a particular class category - on the last class categories you have modified - on the last packages you have modified Here is a portion of a large coverage: A technical description of Hapao may be found on http://bergel.eu/download/papers/Berg12c-HapaoSCP.pdf We are daily using Hapao to help us understand our tests. Cheers, Ricardo, Alejandro & Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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