May 2013 - Pharo-dev - lists.pharo.org

How can I remove a user from SmalltalkHub?
by Mariano Martinez Peck June 6, 2013

June 6, 2013

That :) Thanks! -- Mariano http://marianopeck.wordpress.com

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Lowecase class names
by Jan Vrany June 6, 2013

June 6, 2013

Hi is there any reason why class builder does not allow lowercase classnames? Underscore is allowed, though. Jan

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Release Artefact 1.0, the PDF framework
by Guillaume Larcheveque June 5, 2013

June 5, 2013

We are proud to announce that Artefact is available in 1.0 version. You can download it from: http://smalltalkhub.com/#!/~RMoD/Artefact Artefact is a framework to generate PDF documents. It is fully written in Smalltalk and doesn't require any native library. Artefact is light, platform independant and offer to users a high level of abstraction in order to easily creating PDF documents. * completely written in Smalltalk (and only Smalltalk), * complete freedom about the order of creation for pages, elements... (no need to follow the document order) * multi format and orientation for pages * page composition based on reusables PDF elements, * extensibility by offering a composition standard to create your own high level elements * styleSheet that can be reused in many documents and avoid wasting time and place with duplication * image support with the JPEG format * pre-defined high level elements like datagrid * support PDF compression to produce compact files A basic documentation is available in the help browser. Many examples are implemented in the PDFDemos class. -- *Olivier Auverlot and Guillaume Larcheveque*

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Amber's new stepping debugger
by Nicolas Petton June 4, 2013

June 4, 2013

Hi guys! Today I was able to debug Amber code with a stepping debugger for the first time! The debugger is based on an AST interpreter with a small stack implementation. Here's a short video of the debugger in action: https://www.dropbox.com/s/43mli1wwbdwj5kx/amber-debugging.mov While it's an early version, it is already usable :) cheers, nico

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Scrolling without clicking in lists
by Sven Van Caekenberghe June 4, 2013

June 4, 2013

Hi, In 2.0 you can scroll (using a scroll wheel or the track pad 2-finger swipe) in any list (of a browser for example) just by moving the mouse pointer over it, _without_ clicking in it, thus _without_ moving the focus. In 3.0 this seems to be broken: no matter where you are with the mouse pointer, you scroll the view with focus. As far as I can tell, this is not how it should be, and it brakes my workflow ;-) Sven

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Trait exclusions
by Frank Shearar June 4, 2013

June 4, 2013

I have a Trait TGroup that requires #*, #identity and #inverse. I want to construct a TField by composing TGroup with itself. One TGroup will form the operations #*, #one, and #reciprocal while the other will form #+, #zero and #negated. I don't want #identity or #inverse, because these apply to one operation, and it makes TField's API ambiguous. That's what TraitExclusion is for. I had thought I could say (TGroup @ {#identity->#zero. #* -> #+. #inverse->#negated} + TGroup @ {#identity->#one. #inverse->#reciprocal}) - {#identity. #inverse} but TraitComposition >> #- says that exclusion binds tighter than +. So in effect the above composition is the same as TGroup @ {#identity->#zero. #* -> #+. #inverse->#negated} + (TGroup @ {#identity->#one. #inverse->#reciprocal} - {#identity. #inverse}) In short, to remove the undesirable #identity and #inverse I have to exclude from both sides of the composition: TGroup @ {#identity->#zero. #* -> #+. #inverse->#negated} - {#identity. #inverse} + TGroup @ {#identity->#one. #inverse->#reciprocal} - {#identity. #inverse} My question is this: what is the reason for - binding more tightly than +? Why is it _not_ desirable to have - distribute over +? frank

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A primitive to create a temporary directory?
by Damien Cassou June 4, 2013

June 4, 2013

Hi, is there a primitive to create a temporary directory without any race condition issue? Best -- 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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Bug in SmalltalkHub "delete package"
by Mariano Martinez Peck June 3, 2013

June 3, 2013

Hi guys. I tried to remove a package from the "remove package" button in the website. The package is indeed removed from the website, but if you take a fresh image, add the repository and add it to monticello, you still can see and browse the removed package.... any idea how to solve it? I need to remove packages for real... thanks! -- Mariano http://marianopeck.wordpress.com

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zeroconf --headless/-headless
by Andrei Vasile Chis June 3, 2013

June 3, 2013

Hi, If I try to execute './pharo Pharo.image' after downloading the latest Pharo Vm with the zero conf script it fails with the error: unknown option: -headless. If I download the stable one it works. Cheers, Andrei

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A screenshot we should remind today
by Pavel Krivanek June 3, 2013

June 3, 2013

happy nostalgia :-) Cheers, -- Pavel

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