- Pharo-users - lists.pharo.org

FileReference / and parent
by Alistair Grant April 16, 2017

April 16, 2017

Hi All, I previously suggested a change to Path>>/ which actually covered two issues: 1. The handling of the parent directory notation, i.e. ".." 2. The construction of path segments when appending a string. As Damien pointed out, the first issue needs a bit more consideration. I think the second point is still problematic and can be addressed separately. In particular: ('/a/b/c' asFileReference / 'd/e/f') parent "File @ /a/b/c" I would expect the result to be "File @ /a/b/c/d/e" The fix is straightforward (although someone may be able to propose a more elgant solution): -- / aString | path additionalPath index | aString isEmptyOrNil ifTrue: [ Error signal: 'Path element cannot be empty or nil']. additionalPath := Path from: aString. path := self class new: self size + additionalPath size. path copyFrom: self. index := self size + 1. additionalPath do: [ :each | path at: index put: each. index := index + 1. ]. ^ path -- 1. Do you agree with the proposed change? 2. (Assuming you agree): Should we target Pharo 6.0 or 7.0? On one side, this is clearly a bug, on the other, no one has reported it to date, so it isn't having a big impact. Thanks, Alistair

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How can I set the SmaccDebugParser in Moose
by Stephane Ducasse April 16, 2017

April 16, 2017

Hi I found the SmaCCParserDebugger and I found the debug menu in the Smacc tool. Now I get a GT and byteCode debugger but I do not find a way to make the new debugger actif. Stef

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why is adding instance variables so slow?
by Peter Uhnak April 16, 2017

April 16, 2017

Hi, does anyone know why adding instance variables is so slow? I did some quick benchmarks (see below), resulting in more than order of magnitude speed difference between having it in the class definition and adding it later. In fact it is still much faster to delete the class and then recreate it with the instance variables in the d efinition. For four arguments it is till 8x faster to delete the class four times and recreate it then just add the variable. Unfortunately I cannot just trash the classes (they have methods and inheritance). So the question is: why is it so slow? can I somehow improve the performance? Thanks, Peter Benchmarks: [ cls := Object subclass: #Some1. cls removeFromSystem. ] bench. "'91 per second'" [ cls := Object subclass: #Some2 instanceVariableNames: 'variable'. cls removeFromSystem ] bench. "'90 per second'" [ cls := Object subclass: #Some3. cls addInstVarNamed: 'variable'. cls removeFromSystem. ] bench. "'7 per second'" [ cls := Object subclass: #Some4. cls removeFromSystem. cls := Object subclass: #Some4 instanceVariableNames: 'variable'. cls removeFromSystem. ] bench. "'43 per second'" [ cls := Object subclass: #Some3. cls addInstVarNamed: 'variable1'. cls addInstVarNamed: 'variable2'. cls addInstVarNamed: 'variable3'. cls addInstVarNamed: 'variable4'. cls removeFromSystem. ] bench. "'2 per second'" [ cls := Object subclass: #Some4. cls removeFromSystem. cls := Object subclass: #Some4 instanceVariableNames: 'variable1 variable2 variable3 variable4'. cls removeFromSystem. ] bench. "'44 per second'" [ cls := Object subclass: #Some5. cls removeFromSystem. cls := Object subclass: #Some5 instanceVariableNames: 'variable1'. cls removeFromSystem. cls := Object subclass: #Some5 instanceVariableNames: 'variable1 variable2'. cls removeFromSystem. cls := Object subclass: #Some5 instanceVariableNames: 'variable1 variable2 variable3'. cls removeFromSystem. cls := Object subclass: #Some5 instanceVariableNames: 'variable1 variable2 variable3 variable4'. cls removeFromSystem. ] bench. "'17.269 per second'"

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Pharo 6.0 On windows crash while trying to run AthensFlakeDemo
by Ricardo Pacheco April 16, 2017

April 16, 2017

I have been trying to run the AthensFlakeDemo in Pharo 6, updated as of today, in Windows 10 using this command: AthensFlakeDemo new openInWorld. Every time I run it, Pharo crashes. It looks to me like a bug, but before reporting a bug I want to ask you if I need to install/do something else prior to trying to run this demo. Thanks -- View this message in context: http://forum.world.st/Pharo-6-0-On-windows-crash-while-trying-to-run-Athens… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Pharo6 ombu-session files in pharo-local
by Holger Freyther April 15, 2017

April 15, 2017

Hi, as part of moving a test image from Pharo5 to Pharo6 I also noticed that on each start a new "ombu-session" folder will be created (and never cleaned up). For a server-side deployment this is quite unfortunate as I want/need to use a fixed amount of disk space. I think Norbert has similar concerns with this feature. We are using "image-launch" to run the image and then either systemd|monit|runit|kubernetes will execute (and re-execute) image-launch. So potentially many many folders are created and never used. On deployments with many images, it is rare to make online changes and even more rare to try to recover them. Would it be possible to create the underlying storage or disable it completely? thank you holger

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Traits score: Squeak: 1, Pharo5: 0
by Hilaire April 15, 2017

April 15, 2017

So it looks like Squeak[1] is capable to produce a correct .mcz file, out of a package coming with Traits and class. By correct, read the Traits logic is not lost. Hilaire [1] I tested with a Squeak6 alpha waiting somewhere on my disk -- Dr. Geo http://drgeo.eu

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Re: [Pharo-users] Export MongoDB to sql format
by Esteban Lorenzano April 14, 2017

April 14, 2017

> On 13 Apr 2017, at 19:26, Asbath Sama biyalou via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > From: Asbath Sama biyalou <asamabiyalou(a)yahoo.com> > Subject: Export MongoDB to sql format > Date: 13 April 2017 at 19:26:25 GMT+2 > To: Pharo users users <pharo-users(a)lists.pharo.org> > > > Hello Everyone. > > I think this is not the right place for this question. But I am doing a > work with Pharo. > > I use MongoDB with Voyage. But I am asked to export my database in sql > format. > > I want to know if there is a way to export mongoDB in sql. there is not. a nosql database will have problems to export its data as sql. of course it can be done (as everything), but it is a manual task :S cheers, Esteban > > > Thanks. > > > Asbath > > > >

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Methods & Classes using the command line.
by nacho April 13, 2017

April 13, 2017

Hi pharoers, If I do the following in a minimal Pharo image, using the command line: ./Pharo --headless Pharo.image eval "Object subclass: #TestClass instanceVariableNames: 'one' classVariableNames: '' package: 'IS-Test'." I get the class created. However, if I try to pass the following argument to eval: "Object subclass: #TestClass instanceVariableNames: 'one' classVariableNames: '' package: 'IS-Test'. TestClass compile:'one ^one' classified: 'accessor'." I get an UndefinedObject>>DoIt (TestClass is Undeclared). At first I thought it could be that it takes sometime to compile the class, so added some delay: "Object subclass: #TestClass instanceVariableNames: 'one' classVariableNames: '' package: 'IS-Test'. (Delay forSeconds: 5) wait. TestClass compile:'one ^one' classified: 'accessor'." But again: UndefinedObject>>DoIt (TestClass is Undeclared). I even tried to do: "Object subclass: #TestClass instanceVariableNames: 'one' classVariableNames: '' package: 'IS-Test'. Smalltalk saveAndQuit." and after that add only a method by passing: "TestClass compile:'one ^one' classified: 'accessor'. Smalltalk saveAndQuit." But again: UndefinedObject>>DoIt (TestClass is Undeclared) How do I add a method to a class using the command line? Thanks in advance Nacho ----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/Methods-Classes-using-the-command-line-tp4941977.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Machine Learning in Pharo
by frankl1_miky April 13, 2017

April 13, 2017

Hello everyone, I would like to experiment machine learning in Pharo. Is there any library out there for that purpose ? Thanks ! -- View this message in context: http://forum.world.st/Machine-Learning-in-Pharo-tp4941934.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Export MongoDB to sql format
by Asbath Sama biyalou April 13, 2017

April 13, 2017

Hello Everyone. I think this is not the right place for this question. But I am doing a work with Pharo. I use MongoDB with Voyage. But I am asked to export my database in sql format. I want to know if there is a way to export mongoDB in sql. Thanks. Asbath

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