Beginners March 2008

beginners@lists.squeakfoundation.org

66 participants
66 discussions

Traits Example
by Rob Rothwell 17 Mar '08

17 Mar '08

Hello, Can anyone give me a simple Traits example? I am trying to figure out if it would be useful for me in the context of developing Aida applications. In Aida, a WebApplication observes a domain model object. Let's call it WebAppModel. Of course, you could subclass ANY object to create your WebAppModel, but I still want it to know how to do certain things, like start and stop itself. In other words, I might have one WebAppModel that subclasses Object, and another that subclasses OrderedCollection, but I don't want to teach them both how to start or stop each time I create a new one, and it seems less elegant to subclass everything from a WebAppModel base class and then include the actual objects they model as instance variables. Does this make sense or am I missing some other fundamental concept, and is this what Traits are for? Thanks, Rob Rothwell

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Help with Curl
by Leon Smith 17 Mar '08

17 Mar '08

I've been trying to get Squeak to be a client for RESTful web services, and I need to use Curl. I've tried both the "standard" CURLPlugin and another one from a blog. Both give me the same primitive failed error when trying to get a new handle (Curl new). I'm on Ubuntu Gutsy (7.1), Squeak 3.9 and I have Curl 7.16.4. I'd rather use an external plugin then recompiling my image, but I will if I have to. Any ideas would be very much appreciated. -- View this message in context: http://www.nabble.com/Help-with-Curl-tp16033518p16033518.html Sent from the Squeak - Beginners mailing list archive at Nabble.com.

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Squeak in commercial projects
by RENE PLOURDE 16 Mar '08

16 Mar '08

Can one use Squeak to build and sell applications? My wife is a musician and has some ideas for a Music Theory Application and asked if I could build it. The choices seem to be between Squeak and VisualWorks. If one built an application with Squeak are there tools for packaging it so that you only ship executables and not the entire development environment? Thanks for any information you can provide. Rene'

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[Fun] Squeak the mouse vs. Tom the cat :)
by cdrick 15 Mar '08

15 Mar '08

I just found that, though don't know if cat's name is Tom ;-) ... funny but gore... http://www.amazon.fr/exec/obidos/ASIN/2226059237/bdgest-21 http://www.bedetheque.com/serie-1485-BD-Squeak-The-Mouse.html Cédrick

3 2

russian language
by Женя Зуб 15 Mar '08

15 Mar '08

hi, dear squeakers. I want to create a program in Russian, but nothing can customize the Russian language in the system. Malformed so 'http://wiki.squeak.org/squeak/5773' didn't help. Maybe someone decided my problem for his national language? P.S. Sorry for my English :)

1 0

[ANN] An Introduction to Seaside
by michaelperscheid＠gmx.de 15 Mar '08

15 Mar '08

Dear all, We would like to announce that we are about to publish an extended and improved version of our Seaside tutorial as a printed volume via Lulu. We plan the book "An Introduction to Seaside" to be finished by mid-April. Thanks to everyone who provided feedback and suggestions for improvement! Michael Perscheid on behalf of the HPI Software Architecture Group -- Psst! Geheimtipp: Online Games kostenlos spielen bei den GMX Free Games! http://games.entertainment.gmx.net/de/entertainment/games/free

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Studying Artificial Intelligence
by Thiago Silva 14 Mar '08

14 Mar '08

Hello, I was wondering if there is any squeak project/tool targeted at AI students, anything that could help illustrate/express basic concepts on knowledge representation, expert systems, etc. I have been looking for something like this for a few days and, being new to squeak, I'm afraid I might be looking at the wrong places. Thanks in advance, -- Thiago Silva, mailto: tsilva at sourcecraft info jabber: tsilva(a)jabber.org http://sourcecraft.info/blog

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Nested Intervals
by Peter Stewart 14 Mar '08

14 Mar '08

Thanks Bert. You did not misunderstand my question. I'm very new to squeak and find it a lot of fun. I'm having trouble with syntax and I haven't found examples that help me. In this method, 'numerators', 'determinant' is a Matrix. I want this method, 'numerators', to make three matrices from 'determinant', replacing successive columns (k) with the elements in an OrderedCollection ('constants') Then add these matrices to an OrderedCollection ('numerators') and return that OrderedCollection. When I inspect the 'numerators' returned, it contains a single Matrix, each column of which is filled with the replacement column. I tried the Matrix class instance method called "column at: put:". It put the new column in the wrong place, spread across two columns, and left all the other elements 'nil' I'd appreciate any help on this. Thanks The instance variables are all assigned values in the 'initialize' method. Object subclass: #Structure instanceVariableNames: 'determinant constants data denominator numerators size' classVariableNames: '' poolDictionaries: '' category: 'Sim-Model' numerators | tempMatrix | "determinant is a Matrix. constants is an OrderedCollection." numerators := OrderedCollection new. tempMatrix := determinant. (1 to: size) do: [ :k | (1 to: size) do: [ :row | (1 to: size) do: [ :column | (tempMatrix at: row at: k put: (constants at: row)) (numerators add: tempMatrix) ] ] ]. ^ numerators.

1 0

ScriptableButton and mouseCodeToRun
by polishookm 13 Mar '08

13 Mar '08

I know how to open a halo and navigate through menu choices to add a mouseUp action to a ScriptableButton. How can I add the mouseUp action with code? To be something like: button := ScriptableButton new. button position: 200 @ 200. button label: 'Paragraph'. " what goes here? " button extension: (mouseUpCodeToRun -> 'Transcript show'). button openInWorld. If the detective-process of how to figure it out could be explained as well, that would be great. Thanks very much in advance, MP

1 0

Nested Intervals
by Peter Stewart 13 Mar '08

13 Mar '08

How do I nest Intervals so that I may reference a Matrix an element at a time? Matrix at: i at j. Thanks.

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Beginners March 2008