Squeak-dev December 2005

squeak-dev@lists.squeakfoundation.org

129 participants
187 discussions

RE: (newbie) String / Array / ArrayedCollection
by Ramon Leon 03 Jan '06

03 Jan '06

> (String streamContents: [:stream | > 'A series of words to be shuffled' substrings shuffled > do: [:each | stream nextPutAll: each] > separatedBy: [stream space]]) > > - Bert - > That's still a lot of typing for what most other languages call join. On of the first extentions methods I added to Collection was this.. join: aString ^String streamContents: [:stream | self do: [:each | stream nextPutAll: each asString] separatedBy: [stream nextPutAll: aString]]

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[BUG] [FIX] Incremental programming in the debugger
by Diego Gomez Deck 02 Jan '06

02 Jan '06

from preamble: "Change Set: DebuggerFix-dgd Date: 18 December 2005 Author: Diego Gomez Deck <DiegoGomezDeck(a)consultar.com> Fix an error in the incremental programming facilities providen by the Debugger. Error: When a method is implemented using the [Create] button from the debugger, the method is called with only one parameter: The failed message Fix: Moves the arguments from the message to the context temps. " -- Diego -- ============================================================== Diego Gomez Deck ------------------------------------------------------------ http://www.small-land.org http://www.consultar.com/DiegoGomezDeck/ http://diegogomezdeck.blogspot.com/ http://es.groups.yahoo.com/group/LibroProgramacionSmalltalk/ ==============================================================

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PortAudio
by Bob.Cowdery＠CGI-Europe.com 01 Jan '06

01 Jan '06

I know someone was working on a port of PortAudio to Squeak. Just wondered how far its got and if there is anything usable yet. Thanks Bob *** Confidentiality Notice *** Proprietary/Confidential Information belonging to CGI Group Inc. and its affiliates may be contained in this message. If you are not a recipient indicated or intended in this message (or responsible for delivery of this message to such person), or you think for any reason that this message may have been addressed to you in error, you may not use or copy or deliver this message to anyone else. In such case, you should destroy this message and are asked to notify the sender by reply email.

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Help requested with morphic-related bug
by Kurt Thams 01 Jan '06

01 Jan '06

I wrote a program to solve Sudoku puzzles, and when I run it I get a problem... various submorphs stop drawing (and get rendered as a red box with a yellow cross through it), and a walkback comes up with "Error: Error: Instances of UndefinedObject are not indexable" (in WorldState>>displayWorldSafely) Not sure if I'm doing something wrong with my program or if it is an error in Morphic. Essentially, I fork a process and set a morph to step while the forked process updates the model that the morph is drawing from. The code can be downloaded from here: http://thams.com/Kurt-Sudoku-ktt.2.mcz and executed with 'Kudoku example1' Any help appreciated. -- kurt

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Re: Traits?
by Adrian Lienhard 01 Jan '06

01 Jan '06

Hi all, We have been working on the integration of the traits implementation with current 3.9a. Now it's ready to be tested, played with, reviewed etc. There's a ready image at http://www.adrian-lienhard.ch/files/ Squeak3.9a-traits.zip. For those who like to create this image themselves, here the instructions (of course, this will later automatically work via the update stream): - get http://ftp.squeak.org/3.9alpha/Squeak3.9a-6705.zip (that's the latest published 3.9a image) - open Monticello, select the source.squeakfoundation.org/39a repository - load from there ScriptLoader-al.55 - evaluate "ScriptLoader new updateFrom6705" (which will initiate the traits bootstrap) - Click "proceed" when asked "You are about to load new versions...", same for "Behavior should not be redefined..." - After this, the re-compilation of the image is done, which takes quite some time... and that's it. Note, there's no fancy traits browser as you might expect. What this release is all about is the new class kernel enhanced to support traits, and Monticello and tools have being adapted to properly work with traits. The code browser has a new menu items to display the definition template in order to create a new trait. In addition the kernel includes an algorithm to efficiently calculate the required methods of a class; this was implemented by Nathanael and integrated by Daniel. Daniel has also been working on new tools based on OmniBrowser. This can be installed by loading the latest version of the package from http://kilana.unibe.ch:8888/TraitsOmniBrowser (a prerequisite is latest OmniBrowser from SM). Open the browsers by "OBTraitStructureBrowser new open" and "OBTraitStructureBrowser new open". However, I think, those tools need more work to be ready, and is not subject to inclusion for now. Here an overview for the people interested in looking at the code: - There is a new Kernel package; almost all changes there are in the category Kernel-Classes (Behavior, ClassDescription, ...) - There is a new package named Traits. It includes all additional classes and traits for the kernel (see Traits-Kernel) and also for the requires algorithm mentioned above - This package has a couple of extensions (tip: to look at them, use MC's snapshot browser): most of those class extensions or overrides should eventually be moved to the appropriate packages. - There is a new version of the Tools package which contains the adapted code browser - Quite some changes have been made to Monticello to support saving and loading of traits - Tests can be found in category Traits-Tests I encourage interested people to have a look soon and to bring up any questions or concerns, so that we can avoid stalling the 3.9a process. At this place, I'd like to thank all the people that have been involved in this project in one or the other way. Special thanks to Andrew, Daniel, Marcus, Nathanael and Stef. Cheers, Adrian ___________________ Adrian Lienhard www.adrian-lienhard.ch On Dec 3, 2005, at 21:28 , Cees De Groot wrote: > Hi, > > Any news on traits? Anything else that we should be attending > w.r.t. v3.9? > > Regards, > > Cees

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Named pipes
by Bob.Cowdery＠CGI-Europe.com 01 Jan '06

01 Jan '06

I have posted a few messages concerning named pipes without any response so I guess people just don't use them. I have managed to figure out the issues so far and all turned out to be my mistake. Unfortunately I now have some issues reading (rather than writing which works fine now). On the experiments I have done the following seems to be the case. 1. As Squeak is single threaded reading an empty pipe locks up Squeak. This was not unexpected and I need to be able to do a fcntl(stream, fcntl.F_SETFL, os.O_NDELAY). But I don't know how to do this in Squeak. I would also want to run this in a separate thread and AsyncFile looks useful for this. 2. FileStream atEnd always returns true regardless of how much data is in the pipe. This means everything that uses atEnd such as next: and things that use next: don't work either. In fact the only way to read data is to use next with no way to know when you are at the end of file. 3. FileStream size always returns a huge number that is always the same. Any help with this would be much appreciated. Thanks Bob *** Confidentiality Notice *** Proprietary/Confidential Information belonging to CGI Group Inc. and its affiliates may be contained in this message. If you are not a recipient indicated or intended in this message (or responsible for delivery of this message to such person), or you think for any reason that this message may have been addressed to you in error, you may not use or copy or deliver this message to anyone else. In such case, you should destroy this message and are asked to notify the sender by reply email.

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Mission for Squeak Foundation
by Stéphane Ducasse 31 Dec '05

31 Dec '05

Hi Context: a small company state founded would like to evaluate squeak for developing open-source software for education: environments for kids to learn maths, history, reading..... They are willing to invest quite some money in the process and if this is successful put more. Problem: Now they are really big believers about open-source. Their mission is to help schools in the computer development: web hosting, management software....Now they are not specialist in squeak nor in licenses/lawyer. I told them that lot of projects are developed in Squeak (sophie, Tweak, openCroquet, Squeakland, SmallLand....) They asked around and they got several and different voices. Request: Now they have the following request which makes a lot of sense: They would like to get the official analysis of the license so that they can understand the risk. (they are not talking about changes but they would like to understand in normal terms what are the problems and risks for them). They suggested me to contact some french free software organization to ask them. Now I would like to know if this is possible that we ask andrew and the lawyer that ron contact for the cryptographic packages to write down their analysis and that we publish it on the squeak web site. What do you think? I think that this would be a perfect use of the SqueakFoundation to make the situation clearer. Stef

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Squeak Chat Wednesday January 4th 20:00 GMT
by Ken Causey 31 Dec '05

31 Dec '05

Just a reminder that the next Squeak Chat will take place between 20:00 (8 PM) GMT Wednesday January 4th and 00:00 (Midnight) GMT Thursday January 5th, 2006. As usual we will meet in #squeak on irc.freenode.net. More information about the #squeak IRC channel can be found at http://people.squeakfoundation.org/article/7.html This is a good time to contribute to the development of Squeak by participating in the Harvesting Process. One of the main ways to contribute is by Reviewing submitted fixes and enhancements. For information about the Harvesting Process see http://minnow.cc.gatech.edu/squeak/3152 If you have the time please attend and work toward the future of Squeak. The next seven chats are scheduled for 00:00 (12:00 AM) GMT Monday January 09, 2006 04:00 (04:00 AM) GMT Friday January 13, 2006 08:00 (08:00 AM) GMT Tuesday January 17, 2006 12:00 (12:00 PM) GMT Saturday January 21, 2006 16:00 (04:00 PM) GMT Wednesday January 25, 2006 20:00 (08:00 PM) GMT Sunday January 29, 2006 00:00 (12:00 AM) GMT Friday February 03, 2006

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(Q) Quick question re Morph layout
by Rick McGeer 31 Dec '05

31 Dec '05

I have a simple layout problem, but pawing through the code and the tutorials isn't yielding an answer. I want to lay out an array of rectangular Morphs in a two dimensional array inside a fixed size scrolling morph which fits as a panel in a larger morph. I tried subclassing a ScrollPane as the outer morph, and found it wasn't initializing properly (even though I called super initialize. Then I tried throwing a ScrollPane into a RectangleMorph and using TableLayout with the settings from the row prototype, and found the outer morph had a mismatched size with the children. Any pointers to relevant tutorials, code, etc. helpful. I don't suppose there is a good Morphic book anywhere that describes the API?

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Re: Re: squeak & support for video?
by polishook＠optonline.net 31 Dec '05

31 Dec '05

> Am Thursday, 29. December 2005 22:58 schrieb stéphane ducasse: > >Hi martin > >Do you think that the state is good enough to have it in the Full 3.9? > Well, from my point of view it's still very experimental. Altough > usable for certain tasks. The next release will come with some code > examples. So you can see more easyly what it's good for. > And I think about making a Squeak Map version. So it will be more > accessable for people and hopefully I will get more feedback. > Martin With a Squeak Map version, I will surely give you feedback. Thanks in advance -

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