Beginners March 2007

beginners@lists.squeakfoundation.org

45 participants
47 discussions

Is there a tandard way to attach context menus
by Herbert König 04 Nov '11

04 Nov '11

Hello all, is there a standard way to attach a context menu to a morph? It's fairly easy to do by checking for yellowButtonPressed and manually firing up a MenuMorph. But it is sufficient to implement #addCustomMenuItems:hand: to get an enhanced Halo menu while #addYellowButtonMenuItemsTo:event: and #hasYellowButtonMenu don't help. So is there a predefined way without everybody doing his own? Thanks, Herbert mailto:herbertkoenig@gmx.net

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One click setup for 3.9 [win]
by Xinyu Liu 25 Jan '08

25 Jan '08

Hi people, I create a one click setup for newbies. It will do the following things after run: 1. download SqueakVM from ftp.squeak.org 2. download 3.9 images, soruces ftp.squeak.org 3. extract all things 4. create shortcut in desktop and program menu. I found the download process may cost some time, because there is only one download session. The installer can work only in Windows. It can be get from: http://liuxinyu95.googlepages.com/squeak3.9_win_installer.exe I created it with NullSoft installation system scripts. I shared the script code here: http://liuxinyu95.googlepages.com/squeak3.9_win_install.nsi You can change it when 3.9 package updates. Have fun with 3.9! Best regards. Yours, Liu

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Added Instance Variables and Methods are not shown in System Browser
by Warakorn Paphrawat 18 Nov '07

18 Nov '07

I developed a little Meta-Programming application, which adds methods to the MethodDictionary of a class and adds instance variables + getters/setters. However, after running this application the changes are not reflected in the System Browser. All new instance variables and new methods are not shown there. On the other side I can run a little test application, which creates a new instance of class (to which I added some methods and variables), which in turn uses some of the added methods and instance variables through getters/setters without any errors. Is there any trick to make these added methods and instance variables visible ? Again, the new methods are correctly integrated into the MethodDictionary with selectors and CompiledMethods according to "aClass inspect". Is there another way to check whether the new methods and new instance are really integrated into a new class? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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A Question of Style
by Tim Johnson 01 Apr '07

01 Apr '07

Hi, I know the rules for naming accessor and setter methods. But what do I do when the accessor method needs a parameter? I'll try to provide an example. A vendor sells an item called #apple. If I want to get the vendor's price for that #apple, I use a method such as the following: Vendor>>priceOf: aSymbol Now, to make the setter method, I have followed this pattern: Vendor>>priceOf: aSymbol is: newPrice Does this follow traditional patterns? I'll admit I have read the first half of "Smalltalk with Style" but not the second. Should I instead make the setter method look like this: Vendor>>setPriceOf: aSymbol to: newPrice ? Thanks, Tim [PS - Thanks to everyone who has been helping me on here lately, I have been lax in responding. You all bring up some good ideas and tips.]

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Trouble using class Socket
by Marcelo Barbosa 01 Apr '07

01 Apr '07

Hi I'm starting with network classes of Squeak and having some trouble. I've tried to execute the following code in Workspace Window: Socket ping: 'www.cnn.com' and after a few seconds a dialog box poped up with the following message: 'Continue to wait for connection to desktop?' I cannot imagine what is wrong. My connection to the Internet is working perfectly. I can ping the host www.cnn.com using the Windows Command Prompt. I would appreciate so much any help. ------------------------------------------ Marcelo Pereira Barbosa São Paulo, Brasil

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Custom Search Engine for Squeak and related projects, please help
by Matthias Berth 27 Mar '07

27 Mar '07

Hello, I have created a custom search engine for Squeak and related projects: http://google.com/coop/cse?cx=008315932112852043911%3Ayuibfrpnbc0 at the moment it has only a few sites on it. Please volunteer to add more sites (click on the "volunteer to contribute" link) or send interesting URLs to me directly. Please evaluate the quality of the search engine by trying your favorite searches and let me know how it worked. Once it shows good search quality we could consider includding it on squeak.org. If squeak foundation adpts it, we would even get it without googles ads. Cheers Matthias

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Summer of Code: still a little time left for the student applications
by Giovanni Corriga 27 Mar '07

27 Mar '07

Hi all, this is a friendly reminder to all the students interested in applying for the Google Summer of Code program. The deadline has been extended (yes, yet again), and is now Tuesday 27th, 16:00 UTC. So if you still have an application to submit you have a little time left. Giovanni

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where to "put" a unification algorithm...
by Chris Wright 26 Mar '07

26 Mar '07

I would like to play around with some classes which require unification (I know about Prolog/V etc...). I am not sure where to "put" the unification algorithm. It might look like: anObject unifiesWith: anotherObject in: anEnvironment ? does that seem like the right sort of selector? So, to I put that in Number, Strings, Array, (and a class I've made - LogicVar)? Is it "OK" to extend the functionality of the built-in classes this way, or should I derive my own Number, String, Array --- I want to use the parser/compiler that Squeak already has, so I want to be able to enter: 5 unifiesWith: 5 in: emptyEnv On the subject of return values, what's the best way to return more than one value? Should I create my own class (UnificationReturnValue) (then I could tell it how to respond to ifTrue/ifFalse etc), or should I return a collection with indexes for the success-value and the environment-value? Thanks! Cheers Chris -- A/Prof Chris Wright FJFICJ FRACP MBBS Medical Director, ICU Monash Medical Centre Clayton, VIC

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Summer of Code: only 1 day left for the student applications
by Giovanni Corriga 26 Mar '07

26 Mar '07

Hi all, this is a friendly reminder to all the students interested in applying for the Google Summer of Code program. Remember that the deadline is Monday 26th (actually, Tuesday 27th at 00:00 UTC). This gives you a little more than 1 day for submitting your application. So what are you waiting for? Submit NOW! Giovanni

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Do I need to close a FileStream?
by Tim Johnson 25 Mar '07

25 Mar '07

Hi, Do I need to worry about closing a read-only FileStream when I am done reading from it? What happens if I don't? How can I tell if I have lots of open files in my system? "FileStream allInstances inspect"? Thanks, Tim

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Beginners March 2007