April 2011 - Pharo-dev - lists.pharo.org

[Pharo-project] Issue 3975 in pharo: References to ivars shortcut
by pharo＠googlecode.com April 9, 2011

April 9, 2011

Status: FixToInclude Owner: siguc...(a)gmail.com Labels: Milestone-1.3 Type-Patch New issue 3975 by siguc...(a)gmail.com: References to ivars shortcut http://code.google.com/p/pharo/issues/detail?id=3975 In editor you can just select ivar name and then press cmd-shift-N to see all references to it, instead of using browser button. Attachments: ivarrefs.1.cs 684 bytes

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Re: [Pharo-project] [Pharo-users] 1.2.1 Windows no-no
by Mariano Martinez Peck April 9, 2011

April 9, 2011

On Sat, Apr 9, 2011 at 7:07 PM, Robert Shiplett <grshiplett(a)gmail.com>wrote: > I just inspected the pharo LNK file of my new > > C:\Pharo-1.2.1-CogOneClick.app > > and it is set to start in > > > "C:\Documents and Settings\Administrator\Desktop\OneClick.app" > > > WRONG! > > I am logged in as another user and not as Administrator ( which on XP > I only enter from Safe Mode ) > > > Pharo might be okay using my > > C:\Documents and Settings\Owner\Local Settings\Application Data > > I have reset the LNK as starting in > > C:\Pharo-1.2.1-CogOneClick.app\Contents\Resources > > and reset the TARGET to > > C:\Pharo-1.2.1-CogOneClick.app\Contents\Windows\Squeak.exe pharo.image > > > Some Windows users would not be amused to see this Administrator ... > as all too often spyware goes where it does not belong ... especially > on Corp desktops. > Can you please submit an issue with that please? Check these threads: http://forum.world.st/template/NamlServlet.jtp?macro=search_page&node=12948… > > If we use an sh for Linux, why can't we use a simple BAT for Windows? > > Are you aware of the Windows installer ? -- Mariano http://marianopeck.wordpress.com

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[Pharo-project] TestResource bug?
by Guillermo Polito April 9, 2011

April 9, 2011

Hi! I'm using pharo 1.2 and I've found a little problem in here TestResource>>makeAvailable "This method must be the _only_ way to set a notNil value for the unique instance (current). First, obtain a candidate instance and set current to a notNil placeholder (any notNil object not an instance of me would do; this version uses false). Next, check any subordinate resources needed by this resource. Lastly, setUp the candidate and put it in current if it is available, ensuring that it is torn down otherwise." | candidate | * current := false.* candidate := self new. self resources do: [:each | each availableFor: candidate]. [candidate setUp. candidate isAvailable ifTrue: [current := candidate]] ensure: [current == candidate ifFalse: [candidate tearDown]] And everywhere in the class, the check over the current class instance var is done like current isNil ifTrue: .... So once that var is initialized, but the makeAvailable fails, it always fails... Is this a bug or i'm doing a mistake? Shouldn't *current := false be changed *be changed by *current := nil. *??* *Thanks! Guille

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[Pharo-project] Initial PetitC parser
by Javier PimÃ¡s April 9, 2011

April 9, 2011

Hi, I took some time to start developing a C parser with PetitParser. I used the slides of the smalltalk school, they were pretty useful, and after some hours I have a very basic tokens scanner. The idea of this work is to be able to feed the parser with C headers and automagically get the C bindings done in smalltalk. Now I have to actually start doing something with the scanned code. How should I do that, all in the same class? What if I want to generate bindings for different kinds of FFIs? Other question, how should I handle preprocessing? (now there isn't any kind of preprocessing) You can see the code, download it and commit improvements to the repo at www.squeaksource.com/Bindings Anybody who is interested is welcomed to help in the development! Regards, Javier. -- Javier PimÃ¡s Ciudad de Buenos Aires

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[Pharo-project] thx to Code Snippets
by HwaJong Oh April 9, 2011

April 9, 2011

To me, learning Smalltalk is not as easy as knowing how cool Smalltalk is. I found a page very useful most of people here already know: http://code.google.com/p/pharo/wiki/CodeSnippets Although some examples are out dated. it is still fun. It almost feels like a web version of ProfStef. Thank you everyone who contributed there. Best Regards -- View this message in context: http://forum.world.st/thx-to-Code-Snippets-tp3438383p3438383.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] Providing a Cog debug [WAS] Fwd: [Vm-dev] Debugging Cog crash
by Mariano Martinez Peck April 9, 2011

April 9, 2011

Hi...I was reading this thread, and even before his last answer, I was thinking more or less the same. Is it worth it to create one more target in Hudson so that to create cogs but with debug flags? It is not necessary to create for stack vm, cog and mt. Maybe just cog is enough. And one for each OS. So, it is only 3 targets, using: CogDebugMacOSConfig, CogDebugUnixConfig, and ... (sorry, I didn't find in windows..). What do you think? is it worth it ? or we can say "ehhh ehh compile it by your own " ? cheers Mariano ---------- Forwarded message ---------- From: Schwab,Wilhelm K <bschwab(a)anest.ufl.edu> Date: Sat, Apr 9, 2011 at 2:19 PM Subject: RE: [Pharo-project] [Vm-dev] Debugging Cog crash To: "Pharo-project(a)lists.gforge.inria.fr" < Pharo-project(a)lists.gforge.inria.fr>, Squeak Virtual Machine Development Discussion <vm-dev(a)lists.squeakfoundation.org> Is there a debug version of Cog that I can run on the box? I have casually avoided learning how to build Cog in part because that means I can't hack the FFI plugin, which forces me to play by the rules on library paths/ldconfig, etc. It also means that I don't have a build environment ready to go, so I can't readily add syslog() calls to bracket where it quits. gdb isn't helping as described below. If there is something you want me to try, let me know. We have a reproducible Cog crash. ________________________________________ From: pharo-project-bounces(a)lists.gforge.inria.fr [ pharo-project-bounces(a)lists.gforge.inria.fr] On Behalf Of Schwab,Wilhelm K [ bschwab(a)anest.ufl.edu] Sent: Friday, April 08, 2011 6:03 PM To: Pharo-project(a)lists.gforge.inria.fr; Squeak Virtual Machine Development Discussion Subject: Re: [Pharo-project] [Vm-dev] FW: Debugging Cog crash Levente, I follow on why my shell script did not work. Your instructions got me going, but we still don't have an answer. The vm is running, but I cannot attach: http://lists.squeakfoundation.org/pipermail/vm-dev/2008-March/001840.html >From what I read, one answer is the get the image loaded and then attach - my problem is that the vm never gets far enough to actually load the image. Any ideas? Bill -- Mariano http://marianopeck.wordpress.com

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[Pharo-project] relational database and id field
by Alexandre Bergel April 9, 2011

April 9, 2011

Hi! Since there are some experts in databases here, I ask a general question about it. Assume that I have to use a relational database to store, let's stay instances of Stef's ComicBook class. Should the class ComicBook have a field id to uniquely identify a book? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Re: [Pharo-project] Unexpected behavior of roundTo:
by Marcus Denker April 9, 2011

April 9, 2011

On Apr 8, 2011, at 7:48 PM, Hilaire Fernandes wrote: > Well, whatever the underneath representation, one can expect roundedTo: > 2 to return a float with two decimals. > Sometimes I think we should use the resources that these amazing machines give us these days to move programming languages closer to humans... There are better Float models than the ones that are implemented in hardware. E.g. another INRIA Project is this GNU MPFR: "The MPFR library is a C library for multiple-precision floating-point computations with correct rounding." http://www.mpfr.org/ Why don't we make our language better at "real" math? The power in the machine is definitly there... I am quite convincd that if there are normal programming languages in 50 years, the math part of them will be closer to Mathematica then to C... Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

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[Pharo-project] Unexpected behavior of roundTo:
by Hilaire Fernandes April 9, 2011

April 9, 2011

2.8011416510246336 roundTo: 0.01 returns 2.8000000000000003 Tested with 1.2 Should I fill a ticket, I don't see anythings similar? Hilaire -- Education 0.2 -- http://blog.ofset.org/hilaire

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[Pharo-project] FW: Debugging Cog crash
by Schwab,Wilhelm K April 8, 2011

April 8, 2011

Gratuitous default recipient... If there is a verbose dump option or other diagnostic efforts that will help, I will do my best to run them and report the results. I am fairly certain the vm is 'Croquet Closure Cog VM [CoInterpreter VMMaker-oscog.54]' (can verify later today), but this happened with an earlier Cog one-click too. There is something about the machine (UUID again?) that is different. I do not have root access to it, but I can get to a terminal. Ubuntu 10.10. ________________________________________ From: Schwab,Wilhelm K Sent: Friday, April 08, 2011 7:44 AM To: Mariano Martinez Peck Subject: RE: [Pharo-project] Debugging Cog crash Mariano, I first identified this problem/opportunity a while ago. At the time, there was no log - the vm just died. I can sniff around again as there might be one this time. My question at the time was whether there was something that I could enable to perhaps get more info. The output from the vm is, and I quote<g> "Segmentation fault". There is no other output. Perhaps it does not get far enough to have a call stack?? Bill ________________________________________ From: Mariano Martinez Peck [marianopeck(a)gmail.com] Sent: Friday, April 08, 2011 3:42 AM To: Squeak Development Discussion Virtual Machine; Pharo Development Cc: Schwab,Wilhelm K Subject: Re: [Pharo-project] Debugging Cog crash also...shouldn't be a crash/dump file somewhere? can you write the output of the console where you invoke the VM into a file ? (using > to redirect) Cheers Mariano On Thu, Apr 7, 2011 at 11:10 PM, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu<mailto:bschwab@anest.ufl.edu>> wrote: Hello all, I have an account on an Ubuntu terminal server (at least I think that's what it would be called) running 10.10. The Cog one-click image crashes with "Segmentation fault" (if run from a terminal); the legacy VM seems to run the image nicely on the box. Any ideas? I will happily collect any facts that will be of help, but I need some direction. Bill -- Mariano http://marianopeck.wordpress.com

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