December 2014 - Pharo-users

Create ZipArchive from memory filesystem
by Markus Fritsche Dec. 15, 2014

Dec. 15, 2014

Hello, is there a quick way to create a zip file from a memory filesystem that I can't see, or are the *Archive classes not compatible with the new filesystem api yet? Best regards, Markus

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command line access to MetaRepoForPharo30
by Yanni Chiu Dec. 15, 2014

Dec. 15, 2014

Is there something broken in the MetaRepoForPharo30 on SmalltalkHub? This was the first time I was trying the command line interface to install code, and it took me a while to figure out that it was the MetaRepoForPharo30 repository (and not my image/vm). In the log below, when looking for configurations in the Fuel repo, the result is normal. Also, SS3 and mc.stfx.eu/ZincHTTPComponents gave normal results. ===== Pharo3.0 Latest update: #30860 yanni@foobar:~/cc/work$ ./pharo Pharo.image --version M: NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 git://gitorious.org/cogvm/blessed.git Commit: 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #14535 ===== yanni@foobar:~/cc/work$ ./pharo Pharo.image config http://smalltalkhub.com/mc/Pharo/MetaRepoForPharo30/main Error: Unable to resolve ConfigurationOfMetaRepoForPharo30 GoferConfigurationReference(Object)>>error: GoferConfigurationReference(GoferReference)>>resolveWith: Gofer>>resolved in Block: [ :each | each resolveWith: self ] Array(SequenceableCollection)>>collect: Gofer>>resolved GoferLoad>>initializeOn: GoferLoad class(GoferOperation class)>>on: Gofer>>execute:do: Gofer>>execute: Gofer>>load ConfigurationCommandLineHandler>>configuration ConfigurationCommandLineHandler>>project ConfigurationCommandLineHandler>>listConfigurationDetails ConfigurationCommandLineHandler>>list ConfigurationCommandLineHandler>>activate ConfigurationCommandLineHandler class(CommandLineHandler class)>>activateWith: PharoCommandLineHandler(BasicCommandLineHandler)>>activateSubCommand: in Block: [ aCommandLinehandler activateWith: commandLine ] BlockClosure>>on:do: PharoCommandLineHandler(BasicCommandLineHandler)>>activateSubCommand: PharoCommandLineHandler(BasicCommandLineHandler)>>handleSubcommand PharoCommandLineHandler(BasicCommandLineHandler)>>handleArgument: PharoCommandLineHandler(BasicCommandLineHandler)>>activate in Block: [ self handleArgument: (self arguments ifEmpty: [ ...etc... BlockClosure>>on:do: PharoCommandLineHandler(BasicCommandLineHandler)>>activate PharoCommandLineHandler>>activate PharoCommandLineHandler class(CommandLineHandler class)>>activateWith: PharoCommandLineHandler class>>activateWith: in Block: [ super activateWith: aCommandLine ] WorldState>>runStepMethodsIn: WorldMorph>>runStepMethods WorldState>>doOneCycleNowFor: yanni@foobar:~/cc/work$ ./pharo Pharo.image config http://smalltalkhub.com/mc/Pharo/Fuel/main 'Available versions for ConfigurationOfFuel' 1.0 1.0-baseline 1.1 1.1-baseline 1.2 1.2-baseline 1.3 1.4 1.5 1.5-baseline 1.6 1.6-baseline 1.6.1 1.7 1.7-baseline 1.8 1.8-baseline 1.8-beta1 1.8-forMarea 1.8.1 1.8.1-baseline 1.8.2 1.8.2-baseline 1.9 1.9-alphaForTanker 1.9-alphaForTanker-baseline 1.9-baseline 1.9.1 1.9.2 1.9.2-baseline 1.9.3 1.9.3-baseline 1.9.4 2.0.0-baseline bleedingEdge development last stable

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Roassal configuration missing Glamour dependency
by Daniel Lyons Dec. 14, 2014

Dec. 14, 2014

I loaded Roassal2 from the Configuration Browser and it added some menu items, one of which produces a debug statement about GLMPager. The problem is easily remedied by installing Glamour. I suggest there is a missing dependency in ConfigurationOfRoassal2. â Daniel Lyons

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How to create a custom slot class in Pharo?
by Damien Cassou Dec. 14, 2014

Dec. 14, 2014

http://stackoverflow.com/questions/27468465/how-to-create-a-custom-slot-cla… -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

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Roassal HTML exporter
by Alexandre Bergel Dec. 14, 2014

Dec. 14, 2014

Hi! We have worked very hard on a Roassal exporter for the Web. Milton has produced the class RTHTML5Exporter, which may be simply invoked as: RTHTML5Exporter new export: aRoassalView. Check this out: https://dl.dropboxusercontent.com/u/31543901/RoassalHTML/index.html Try moving the mouse above the circle or dots in the curve. The html file you see from your web browser is the result of do-iting the following expression: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= | c b c2 | c := RTComposer new. "======" b := RTGraphBuilder new. b view: c view. b edges connectFrom: #superclass; useInLayout. b edges if: [ :fromClass :toClass | toClass name beginsWith: 'TR' ]; connectTo: #dependentClasses; color: (Color blue alpha: 0.3). b nodes if: [ :cls | cls name beginsWith: 'RT' ]; color: Color blue. b nodes color: Color red. b layout cluster. b global normalizeSize: #numberOfMethods min: 5 max: 40 using: #sqrt; alphaColor: 0.4. b addAll: TRShape withAllSubclasses, RTShape withAllSubclasses. b build. c group. "======" c2 := RTCharterBuilder new. c2 view: c view. c2 interaction popup. c2 extent: 300 @ 200. c2 points: (RTShape withAllSubclasses sortedAs: #numberOfMethods). c2 connectDotColor: Color blue. c2 points: (TRShape withAllSubclasses sortedAs: #numberOfMethods). c2 stackX. c2 allY: #numberOfMethods. c2 connectDotColor: Color red. c2 axisX. c2 axisY. c2 build. c group. "======" c layout: RTVerticalLineLayout new. c propagateHighlightToAll. "======" legend := RTLegendBuilder new. legend view: c view. legend addText: 'This is a demonsration of a combination of builders'. legend addText: 'The above visualization shows the dependencies between Roassal and Trachel shapes.'. legend addText: 'Curves indicate the distribution of the number of methods'. legend build. "======" RTHTML5Exporter new export: c view. c view -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Morphic and Polymorph benchmarks
by Juan Pablo Sandoval Dec. 12, 2014

Dec. 12, 2014

Hi, I am trying to do some performance analysis over Morphic and Polymorph. - Are there some interesting benchmarks for Morphic and Polymorph? Thanks, Juampi -- View this message in context: http://forum.world.st/Morphic-and-Polymorph-benchmarks-tp4795787.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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New Pharo user, some questions
by dboeren Dec. 12, 2014

Dec. 12, 2014

Now that my image is working properly again and the fires have been put out, I wanted to introduce myself a bit better... My name is David Boeren. I first learned Smalltalk back in college many years ago, we used Smalltalk V in an object oriented programming class I took which was first-half Smalltalk, second-half C++. This would be about 1992 I think? In recent years I've mainly been using Java, with occasional Python dabblings. I remember installing Squeak once or twice over the years, but to be honest it felt a bit clunky, perhaps this was just an early primitive version or whatever. Recently, I've been getting the itch to try out some different languages. I was kind of looking at Scala or Clojure, one co-worker suggested Erlang, and so forth. But after doing a brief review I ended up coming back to Smalltalk which even after all these years still stands right up with the cutting edge I think. Sure, there are a few things that I think would be a little different if it were designed today like tuple support or whatever, but it feels like the right choice for something I'm going to use mainly for "fun" projects and the interactive environment is awesome. One thing I wanted to ask about is the status of getting Pharo running on iOS (or at least iPad). I found some old posts but nothing much within the last couple of years. I know there were app store policy issues in the past but I think that Apple has opened things up a bit since then, you can now get Pythonista in the app store, or Codea. Is there still an obstacle or is it just something that hasn't been gotten around to yet? I'd love to get it running on my iPad Mini and be able to transmit code back and forth between there and my laptop to work on it wherever I'm at. Second, I'm running into an oddity and I'm not sure what I'm doing wrong or whether this is a bug of some sort, this has to do with trying to replace unicode characters in a string which seems like it should be a straightforward operation. Here is my code: "Fetch the raw JSON data from dtdb.co" response := 'http://dtdb.co/api/cards/' asUrl retrieveContents asString. "Clean up the data a bit to make it a little more regular" response := response copyReplaceAll: 'null' with: '""'. response := response copyReplaceAll: '\u2022' with: ','. response := response copyReplaceAll: '\u009e' with: 'e'. Basically I'm just pulling some JSON data and then doing a few string replacements to make the data suit my needs. The first one works. The second one works. Since the third one ALSO uses a \uXXXX code I would expect it to work too, but it does not - the accented characters are still there. To get a bit more visibility into this, I copied the CopyReplaceAll code from SequenceableCollection into a scratch class method and adding some Transcript output: copyReplaceIn: aString All: oldSubCollection with: newCollection "Answer a copy of the receiver in which all occurrences of oldSubCollection have been replaced by newCollection " | startSearch currentIndex endIndex | Transcript show: 'start' ; cr. startSearch := 1. [(currentIndex := aString indexOfSubCollection: oldSubCollection startingAt: startSearch) > 0] whileTrue: [ Transcript show: 'Found at index ' ; show: currentIndex ; cr. endIndex := currentIndex + oldSubCollection size - 1. aString := aString copyReplaceFrom: currentIndex to: endIndex with: newCollection. startSearch := currentIndex + newCollection size]. Transcript show: 'done' ; cr. ^ aString A minimal test seemed to work: HelloWorld copyReplaceIn: 'R\u00e9my Lapointe' All: '\u00e9' with: 'e'. start Found at index 2 done Testing this with the real data worked too: HelloWorld copyReplaceIn: ('http://dtdb.co/api/cards/' asUrl retrieveContents asString) All: '\u00e9' with: 'e'. start Found at index 22379 Found at index 22500 done However, when I went back to using the regular copyReplaceAll:With: method it does not work and I'm not sure why. When it executes this: aString indexOfSubCollection: oldSubCollection startingAt: startSearch The value comes back as 0 even though it's the same data from 'http://dtdb.co/api/cards/' asUrl retrieveContents asString (I added a "self halt" to be able to step into the method and view the variable values), and I'm not sure what the difference is. There shouldn't be a limit on the size of the collection, should there? The whole thing is around 116k which is big but not ridiculously so. It is however big enough that the debugger can't show the whole value, or at least I haven't found a way to do so. And last, is there a good video tutorial for the Pharo beginner on how to use the various browsers, debugger, tools, etc... that come with Pharo? I would like to start learning more about the best ways to use these in my development processes. I'm also having a lot of trouble finding the correct classes and message for what I want to do, searching online w/ Google often seem to turn up outdated information (or for a different smalltalk flavor) and it can take a while to figure out the correct way to do things. Is there a good central reference for the APIs somewhere? I know that you can search in the browser but I usually don't know the name to search for. It would be good to have a handy reference detailing how to do all the commonplace stuff. Thanks! -- View this message in context: http://forum.world.st/New-Pharo-user-some-questions-tp4795325.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Open that fucking thing.
by Hans Schueren Dec. 11, 2014

Dec. 11, 2014

Who says that programming in smalltalk is different from others ? You can write smalltalk with a simple Texteditor. However. I have written a simple program here , with smalltalk V 2.0 , 16bit 1. The programs name is : Prozentrechnung Only one class is the programm. Only one method is the program. ok. there could be more interdependencies such like "subroutines" not important for understanding 2. The method "startUpApplication" from the class "Notification" is responsible for opening the own programm. ( itself a class uhhhhhhhhh ) So the only thing you have to do is to tell the strartUpApplication method the program Name. here Prozentrechnung new open. thats all 3. Now you have to type a Method named open. for Notification to READ. 4. In most cases is is self and then the startmethod of your own program. Here in my program the Promter is asking first with a simple window to INPUT DATA ! Very simple and easy. I dont care about the endless procedures in other smalltalk implementations but one thing is shure . " i have opened that fucking thing here in smalltalk ! " _______________________________________________________________ Object subclass: #Prozentrechnung instanceVariableNames: 'Berechnung ' classVariableNames: '' poolDictionaries: '' ! !Prozentrechnung class methods ! ! !Prozentrechnung methods ! calculate "Simple Percentage Calculation" | x y ergebnis | x := Prompter prompt: 'Input a sum' default: ' '. x := x asInteger. y := Prompter prompt: 'Input percentage % : ' default: ' '. y := y asInteger. ergebnis := x * (y/100). MessageBox message: 'Ergebnis ist: ' , ergebnis printString! open "Open that fucking thing" self calculate! ! startUpApplication: oldWindows "Opens up the the run-time application window. oldWindows are the windows that were opened when the image was saved." "Replace the below code with the startup code for you application. For example: Puzzle15 new open." Prozentrechnung new open.

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Help needed -- Pharo 2.0 or 3.0 RFB-able image
by jhwoods Dec. 11, 2014

Dec. 11, 2014

Hi Guys, Not used Pharo for a while but getting back into it. I usually like to run images headless and VNC into them - means I can port them to any machines I choose. Having a real problem getting RFB working again. I tried loading various versions of from smalltalkhub: Gofer new smalltalkhubUser: 'PharoExtras' project: 'RFB'; package: 'ConfigurationOfRFB'; load. (ConfigurationOfRFB project version: '0.63') load. But no real success. Ok, I can cope with the fact the main VNC Server menu doesn't work (uses a presumably deprecated method) by invoking thus: RFBServer current stop; initializePreferences; configureForMemoryConservation; allowEmptyPasswords: false; setFullPassword: 'doer'; setViewPassword: 'viewer'; enableLogging: true; enableDebugging: true; allowZRLE: true; start: 0. I can *almost* get to this. TightVNC displays and crashes due to 'pseudo encoding -240' not being supported. UltraVNC will work, on some settings, but dragging a window will crash Pharo. Some socket error or other. I'm prepared to run Pharo 2.0 or 3.0, any VNC viewer at all, and any version of RFB that works ... anybody who can tell me a working configuration will be a lifesaver. Thanks ... ... John -- View this message in context: http://forum.world.st/Help-needed-Pharo-2-0-or-3-0-RFB-able-image-tp4795507… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Fastest way to do case insensitive search and replace?
by Markus Fritsche Dec. 11, 2014

Dec. 11, 2014

Hi, is there a way to search case insensitively and replace in Strings in one shot? If MethodFinder methodFor: #(('HaLLol' 'll' 'tt') 'Hattol') doesn't find anything, does that mean "no" right away? Kind regards Markus

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