February 2010 - Pharo-dev - lists.pharo.org

[Pharo-project] So your working on a cool project and Pharo crashes
by Nathan Tuttle Feb. 19, 2010

Feb. 19, 2010

Is there any way to do a recovery besides the Recover Lost Changes option that doesn't seem to work? It seems the change log that was left behind has some promising things in it. This is just such a bummer. Lot of good work lost.

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[Pharo-project] [update 1.1] #11216
by StÃ©phane Ducasse Feb. 19, 2010

Feb. 19, 2010

Issue 1785: Window event notification Stef

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[Pharo-project] [update 1.1] #11217
by StÃ©phane Ducasse Feb. 19, 2010

Feb. 19, 2010

[update 1.1] #11217 11217 ----- - Issue 1990: Improving Tools (browser sender,implementor) - Issue 2000: remove #at:ifPresentAndInMemory: - Issue 1999: small cleanup related to Object>>#isWebBrowser - Issue 1997: clean up doit special casing - Issue 1998: small dead code cleanup floatarray - Issue 1983: ANSI Integer>>bitAt:put: is missing

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Re: [Pharo-project] databases
by Stephan Eggermont Feb. 19, 2010

Feb. 19, 2010

Levente wrote in response to my: >> 3. You have a legacy (relational) database, with extensive reporting >> written for it. Use an ORM. >Relational databases are not legacy, they have features >which "modern" key-value stores don't (and won't). >ORMs may ease the programmer's work, but they >tend to have bad runtime performance >and can't use (all) the features of todays RDBMSs. In creating the list of different scenarios, I tried to explain in a short text that different needs lead to different solution strategies. Legacy in this context refers to having an existing database you want to continue using. That is a situation where I would recommend starting with ORM unless it is shown that the run-time performance is going to be prohibitive. Please keep in mind that it is a text written for people new to Seaside (and possibly Smalltalk). If you have a suggestion for a better text, please mail me. Stephan Eggermont

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[Pharo-project] Window resize
by Torsten Bergmann Feb. 19, 2010

Feb. 19, 2010

Is there an event when the Squeak window is resized, so one can react and resize morphs accordingly? Thx T. -- NEU: Mit GMX DSL Ã¼ber 1000,- Â¿ sparen! http://portal.gmx.net/de/go/dsl02

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[Pharo-project] Object >> toFinalizeSend:to:with:
by Henrik Johansen Feb. 19, 2010

Feb. 19, 2010

The two uses I've seen of this method (RequiredSelectors>>registerLifelongInterestOf:inAll: in Core, and AXWeakSubscription in AXAnnouncements on SqueakSource) have used this as a poor mans replacement for ephemerons. The problem is it does not work the way these senders expect (ie: registering an action for each resource to be taken when the receiver is finalized), but only executes the last action registered for an object. Would it be an idea to change the implementation to conform to the expectations of the senders, rather than considering the uses as bugs, seeing as how that seems to be the common usage? (And a quite more useful one in the absence of real ephemerons, if you ask me) Cheers, Henry

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Re: [Pharo-project] Class Browser
by Lukas Renggli Feb. 19, 2010

Feb. 19, 2010

> Where is there documentation to be found describing the meaning of > list entry icons (on left side of lists) in the Class Browser? Classes have icons depending on their type. The exception are tests which have a bullet with the SUnit result color of the last run, or gray if there is no data is available. Methods have a green arrow pointing upwards if there is a super implementation, and a green arrow pointing downwards if there are sub implementations. You can click on these icons to see the hierarchy and navigate to the actual implementations of these methods. If the method is flagged a blue flag is displayed instead. If there is a breakpoint a red flag is displayed instead. Finally, if this is a test method, then a bullet with the SUnit result color is displayed. Depending on what you have loaded in your image you might see different icons. Packages can override #browserIcon and #browserIcon:selector: to add custom icons for classes and methods. Seaside for example does that. Lukas -- Lukas Renggli http://www.lukas-renggli.ch

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Feb. 19, 2010

Hi guys I do not know anything about BalloonBezierSimulation but it contains too many self halt. Do you have an idea if this is something that can be fixed? Stef

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[Pharo-project] Class Browser
by Torsten Bergmann Feb. 19, 2010

Feb. 19, 2010

Hi Anthony, I guess there is no documentation (refcard or the like) since the icon may change and are specific to the OB Browser. You can even have your own. Since Smalltalk is very, very dynamic it is often the case that it is much easier to look at the system itself than to ask for up to date documentation. For the icons you should search for the implementors of the method #browserIcon. You can do this using "Tools" -> "MethodFinder". In my image I have - Collection and subclasses (three objects) - Exception and subclasses (a flash) - Magnitude and subclasses (a sum sign) - Morph and subclasses (a morph) - OBAnnouncement and subclasses (a bubble) - String and subclasses (a paragraph sign) - TestCase and subclasses (dynamic icon, depend on the sucess of running the test green, yellow or red) The implementation in TraitDescription and ClassDescription who return a blank icon just assure that there is no icon displayed for traits and classes by default. If you want to know about the inner workings of this mechanism: The #browserIcon returns a symbol that is a method selector on class OBMorphicIcon returning the icon using a form instance. Just have a look at class OBMorphicIcon. To implement an own icon on your class: - create an icon (typical 12x12) in your paint program and save it as PNG or GIF - use the following snippet to generate code from the image: | image stream | image := ColorForm fromFileNamed: '/path/to/icon.gif'. stream := WriteStream with: String new. image storeOn: stream. stream contents inspect. - create an "icon" method by pasting this code in a custom extension method on OBMorphicIcon (put it in a method category with * and the name of your Monticello package). For instance the "OB-SUnitIntegration" package does just this by providing the test case icons in a method category "*ob-sunitintegration" on class OBMorphicIcon. If this is still magic for you, you should learn about Monticello source code packaging using "pharobyexample.org" - implement #browserIcon on you custom class to return the selector of your "icon method" If in doubt, just ask. Bye Torsten http://astares.blogspot.com -- Sicherer, schneller und einfacher. Die aktuellen Internet-Browser - jetzt kostenlos herunterladen! http://portal.gmx.net/de/go/chbrowser

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[Pharo-project] Pharo User Group?
by Alexandre Bergel Feb. 19, 2010

Feb. 19, 2010

Stef, Few weeks ago you said you will meet some layers at inria to know whether something like ESUG may be set for Pharo. Do you have any news? I am just curious. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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