Beginners August 2007

beginners@lists.squeakfoundation.org

66 participants
62 discussions

Re: [Newbies] Retrieving a list of standard method categories?
by Michael Davies 09 Aug '07

09 Aug '07

On 09/08/07, Michael Davies <mykdavies(a)gmail.com> wrote: > Hi Conrad, > > Here's how to find your answer. In the previous menu, instead of > clicking on "new category...", ctl-click on twice it to bring up its > halos (first ctl-click shows halos for the whole menu, second for that > item only). Click the spanner halo and select "inspect morph". Three > key properties can be found in the left-hand list, which will allow to > you find out what will happen when you click that item: the target (ie > who will get called), the selector (ie method name that will be > called), and the arguments. Select "selector", and you'll see it's a > "perform..." which implies that the real method name will be one of > the arguments. Select "arguments" and you'll see it's an array, with > first argument being "#addCategory". Double-click that (to select the > text), and press ctl-M to find implementers. > > There's only one, and that shows the list being built up in quite a > few steps, but it basically finds all the categories *already* *used* > by the classes' superclasses. So there is no standard dictionary of > categories - it's created on the fly whenever you click that menu > item. > > I hope this answers your question, > Michael >

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Dead keys on Ubuntu
by Fahr Jahrel 09 Aug '07

09 Aug '07

Hello, all-- I've been trying unsuccessfully for some hours to make my Squeak image accept diacritical characters under Ubuntu 7.04. I've tried all possible combinations of the -textenc, -encoding, and LC_CTYPE options I could but none worked. The diacritical characters either don't display or display incorrectly. Ironically, if I run Squeak via Wine, the diacritical characters display correctly. Any help pointing me to the right direction would be appreciated. My system configuration today is: Distro: Ubuntu 7.04 Squeak: 3.9-8 #5 Tue Oct 10 11:56:09 PDT 2006 gcc 4.0.3 Squeak3.9alpha of 4 July 2005 [latest update: #7021] Linux ubuntu 2.6.15-27-386 #1 PREEMPT Sat Sep 16 01:51:59 UTC 2006 i686 GNU/Linux default plugin location: /usr/local/lib/squeak/3.9-8/*.so Image: Tried with the vanilla 7067 image, the lasted squeak-dev image, and even Ramon Leon's image. :-) Any help is appreaciated. Thanks, Fahr

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delegation vs inheritance
by gruntfuttuck 08 Aug '07

08 Aug '07

First of all I must apologise if I get some terminology wrong in this post. I was rummaging around the collection classes earlier today and came across class Stack. I was interested to see that it makes use of class LinkedList through delegation with a instance variable rather than inheritance. I'm tyring to remember my Analysis and Design course here. I have a foggy memory about a is-a and has-a relationship. So a ford is-a type of Car, so that is a inheritance relationship and a Car has an engine so that is a delegation relationship. I also know that delegation is better for loose Coupling. As you can see I'm a bit vague on all this. With class Stack what would the be the likely thinking to delegate as apposed to inherit? I think this is a very impotent subject and I would like to be clearer on it. -- View this message in context: http://www.nabble.com/delegation-vs-inheritance-tf4216781.html#a11996570 Sent from the Squeak - Beginners mailing list archive at Nabble.com.

5 12

How to use development tools with a "consumer application VM image"
by Michael Vorburger 06 Aug '07

06 Aug '07

Hello Squeakers! How do you "peek" into it a Squeak image like the one Scratch distributes, so to see and learn from the Scratch classes and methods etc. and "hack" (in the best sense of the word) it? My understanding is that such an image is made "consumer friendly" (what's the term you use for doing things like what's described on http://squeak.preeminent.org/tut2007/html/205.html ?), so when the VM starts, it immediately shows that "application" only, right-clicks are overloaded, and one can not access e.g. a Browser, Workspace etc. development tools anymore, if they even are still part of this kind of images. I am curious how Smalltalk/Squeak handles this issue that probably isn't new to many of you on the list. Can one either "load" (parts of) an image into a running "full/normal" image which has development tools, or can I add back those tools to such an image externally somehow? Surely that is not impossible, no image presumably can effectively completely "lock out" development, or can it? Thanks a lot, Michael

4 4

osVersion on MacOSX
by Norbert Hartl 05 Aug '07

05 Aug '07

Hi, does SmalltalkImage current osVersion always contain darwin as a keyword? thanks, Norbert

3 2

Squeak and concept maps.
by Andrés 05 Aug '07

05 Aug '07

Hi friends squeakers and smalltalkers!: I am not assiduous participant, but I would like to sound out your opinions and ideas on a subject that I investigate. I compile information, on the one hand about conceptual/mental maps and it use, and on the other hand on Squeak/Smalltalk. At the moment I have not gone beyond this compilation, when yesterday, I felt sparks in my mind, something that in "rare" occasion happens to me… |-) The question would be: have you had experience, or at least references, of development or use of conceptual/mental maps with environments or tools of Squeak/Smalltalk?. Those sparks said me that theoretical foundations of both subjects are interlace, being able to combine (it is my impression), reinforcing itself, to offer investigation solutions to us, study and knowledge, that it "craving" to me, quite powerful. Any indication that you have the kindness to contribute will be received with happines. Wishing all of you have had very nice Sunday thanks for your attention. -- Andrés. ______________________________________ El bienestar de la humanidad, su paz y seguridad son inalcanzables, a menos y hasta que su unidad sea firmemente establecida. Bahá'u'lláh. www.bahai.org www.info.bahai.org www.question.bahai.org www.media.bahai.org www.bahaivideo.org

1 0

environment variables
by Norbert Hartl 05 Aug '07

05 Aug '07

Hi, is there a way to access the environment variables of the underlying OS? thanks, Norbert

2 1

Speak based OS
by Gareth Morgan 04 Aug '07

04 Aug '07

Hi, I'm Gareth and I'm new to Squeak (though I've programmed in other languages for about 4/5 years, mainly Java. Currently a CS student in the UK). I'm wondering if there is an OS based around Squeak (either a VM directly on hardware or perhaps strapped onto the Linux kernel) capable of running something like the standard Squeak image (naturally with additions for the things an OS would need). Cheers, Gareth Morgan.

2 2

Loading package plus dependencies via monticello
by Norbert Hartl 04 Aug '07

04 Aug '07

Hi, I like to bootstrap an image with my own application. Until now I had a base installation of the application and did an upgrade with a script provided at the command line. I use repo := (MCDirectoryRepository new directory: (FileDirectory on: repositoryPath) ). (repo loadVersionFromFileNamed: releaseFile) load. Now I'm trying to do a bootstrap without having the application installed. But the way I use it Monticello is unable to resolve dependencies to file them in. How can I provide Monticello with information where it can find the files to resolve the dependencies? thanks, Norbert

5 8

Nonstandard tools you can't live without
by gruntfuttuck 04 Aug '07

04 Aug '07

Hello I recently installed the Whisker Browser and am beginning to rely on it for searching through the class hierarchy. What nonstandard tools do you love to use? -- View this message in context: http://www.nabble.com/Nonstandard-tools-you-can%27t-live-without-tf4216630.… Sent from the Squeak - Beginners mailing list archive at Nabble.com.

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Beginners August 2007