- Pharo-dev - lists.pharo.org

[Pharo-project] Squeaksource.com down
by Miguel CobÃ¡ April 23, 2011

April 23, 2011

It says: "SqueakSource is currently down. We are sorry for the inconvenience and working on the problem. In the meantime you can still commit to a directory repository on your disk and later copy the versions to SqueakSource." Cheers -- Miguel CobÃ¡ http://twitter.com/MiguelCobaMtz http://miguel.leugim.com.mx

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[Pharo-project] Smalltalk, git, files, the universe and everything...okay not everything:)
by Dale Henrichs April 22, 2011

April 22, 2011

Smalltalk is not file-based. For better or for worse. The fundamental problem with Smalltalk is that it is image-based. Removing a method from a file is not sufficient to remove the method from the image. Change sets were invented to provide a file-based solution to the "how do I remove a method from the image" problem. A filein (the one used to initialize your image) plus a series of change sets applied in the right order is the file-based methodology for managing an image. Change sets are integral to Smalltalk. Name another language that uses change sets ... I cannot distribute a fresh set of source files to _upgrade_ an already installed application. I have to supply change sets and those change sets have to specific to the version that is installed in the image ... Remember the problem is "how do I remove a method from the image". The image is a data base, not an executable program, when you load code you also migrate/modify the objects in your "data base". Name another language that does this.... Monticello was invented along the way ... I cannot speak to the original motivation, but I can say that with Monticello I _can_ distribute a fresh set of source files to _upgrade_ an already installed application. Monticello does this by having a meta model that describes the complete application. The meta model is not a "source file" it is a serialized object graph. Monticello dynamically creates a change set by comparing the meta model of the loaded application with the meta model of the incoming "source code". Name another language that does this.... So the meat and potatoes of a Monticello mcz file is a binary chunk of data.... What does git do with binary data? What do humans do with binary data? You need a tool that takes the binary data and makes it readable for the poor developers who cannot unzip and deserialize a binary stream of bits on sight. Enter SqueakSource and SmalltalkHub.... This is where we are today. Can Smalltalk development be based on files....certainly everyone was doing file-based development in 1985, but the Smalltalk environments of the day migrated away from files ... In 1985 I was writing tools to store files and change sets in RCS ... the original ChangeSorter was based on my work back then... In 1993 I was working on tools that stored Smalltalk source meta data using PKZIP ... ENVY stores source meta data into a custom data base.... Store stores source meta data in an RDB... In 2011 I am working on tools that store Smalltalk source meta data using zip ... Smalltalk is image-base and the "standard" development tools just don't fit ... for better or for worse ... Sooooo, we can complain that we are not using git, but there are very good reasons for not using git ... today. Just because 20 years of evolution has moved Smalltalk away from using files in the traditional manner, doesn't mean that it won't evolve back to using files, but until the evolution happens, we need tools like SqueakSource3 and SmalltalkHub to support the _current_ model. Dale

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[Pharo-project] Question on Merlin
by Alexandre Bergel April 22, 2011

April 22, 2011

Hi! Is there a way to break the pane flow based on what the user has selected? Consider the following example: In Hapao, there are two panes: one to select previous coverage, and the second one to pick packages. I would like to have if the user does not select a previous coverage, then we move to pane 2. If he has selected one, then we begin the analysis. Is there a way to do this? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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[Pharo-project] Why errors are not logged in the Transcript?
by Guillermo Polito April 22, 2011

April 22, 2011

It should be fine to have stack traces into the Transcript as a default behavior in addition to the debugger. Guille :)

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[Pharo-project] Where should I create issues for CMakeVMMaker ?
by Mariano Martinez Peck April 22, 2011

April 22, 2011

Cog issue tracker of Pharo issue tracker ? I guess that Cog one. Please, let me know. Thanks -- Mariano http://marianopeck.wordpress.com

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[Pharo-project] Rasterizing strike fonts without subpixel information
by Igor Stasenko April 22, 2011

April 22, 2011

Hello, in Athens i cannot use a subpixel information stored in current StrikeFont(s), because i cannot guarantee that glyphs will be drawn using same orientation and will always match pixel grid on destination form (surface). Therefore, a subpixel 16bpp color map which currently StrikeFonts using makes no sense because you cannot guarantee that 1 pixel in glyph form maps exactly to 1 pixel on screen. I need to render fonts as an alpha transparency mask, so then i could use them to render using arbitrary color + arbitrary scale & rotation. Guys, could you help me, what you are using for converting a truetype fonts to raster? -- Best regards, Igor Stasenko AKA sig.

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Re: [Pharo-project] Networking problems on Pharo 1.2.1
by Stephan Eggermont April 22, 2011

April 22, 2011

That is no networking problem. That is just how a tcp server connections work. When you connect from a client to the server, the server has to initialize a new socket to communicate on. Just take a look at what waitForConnectionFor does. Stephan

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[Pharo-project] About float: new chapter looking for reader and contributors
by stephane ducasse April 22, 2011

April 22, 2011

Hi guys I started to put in shape a chapter on floats based on the numerous discussions we got over the years. You can find it on github under the pharo by example book/Floats Stef

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[Pharo-project] Access to issue tracker?
by Bernardo Ezequiel Contreras April 21, 2011

April 21, 2011

Hi, i cannot change the status of bug 3088<http://code.google.com/p/pharo/issues/detail?id=3088>to fixed could someone give me permissions or access to the issue tracker? thank you.

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Re: [Pharo-project] out of memory - cog on windows
by Marcus Denker April 21, 2011

April 21, 2011

On Apr 21, 2011, at 10:22 PM, Tudor Girba wrote: > Hi, > > Should I to understand that the only way to enable more memory is to recompile the VM? Does that mean that there is no way to pass this information as a parameter like we can on Mac? > > The problem is that I cannot recompile the VM because I have no access to a Windows machine. Is there one available that provides more memory? > We need to finish the windows auto build setup... -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

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