Squeak-dev April 2003

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171 participants
517 discussions

[DOCS] 3 german Tutorials
by Chris Burkert 01 Apr '03

01 Apr '03

Hi I've written three Tutorials. They are at the Swiki of the Squeak e.V. http://swiki.squeakfoundation.org/squeak-ev/52 and in german language. Events ... this is about the triggering technics in Object. SUnit ... a very short introduction in Testing Buttons ... building a Morphic Button (based on Events) I will translate them to english next. enjoy Chris Burkert -- ------------------------------------------------------------------------ Student of applied Computer Science at Chemnitz University of Technology http://www.chrisburkert.de/ chris(a)chrisburkert.de ------------------------------------------------------------------------ "I invented the term Object-Oriented, and I can tell you I did not have C++ in mind." - Alan Kay --> http://www.whysmalltalk.com/

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Ideas, Experiences required for changes managements
by Stephane Ducasse 01 Apr '03

01 Apr '03

Hi In the context of the Kernel Cleaning Project we are facing problems related to change management. While the idea and the tool provided by diego are cool they do not scale up well. Publishing one change one by one is not fast enough. Then when you have multiple versions of the change changeset, SWiki only shows the last one so this is nearly impossible to roll-back to a previous version (I mean I do not want to be forced to browse the upload directory and guess, I want a real way of managing a version). So before hacking yet another solution we wanted to know how others are doing. ideally we would like to have a place where all the changes can be versioned at once so we thought of using cvs, but we want that other can contribute so is source forge easy to use, adequate for this project? For supporting external reviewing process we could generate a web page from the files in the cvs. I think that we should have real tools if we want to move fast. Avi I understood that you used sourceforge for storing SeaSide code. Could you tell us more? Stef Prof. Dr. Stéphane DUCASSE http://www.iam.unibe.ch/~ducasse/ "if you knew today was your last day on earth, what would you do different? ... especially if, by doing something different, today might not be your last day on earth" Calvin&Hobbes "The best way to predict the future is to invent it..." Alan Kay. Open Source Smalltalks: http://www.squeak.org, http://www.gnu.org/software/smalltalk/smalltalk.html Free books for Universities at http://www.esug.org/sponsoring/promotionProgram.html Free Online Book at http://www.iam.unibe.ch/~ducasse/WebPages/FreeBooks.html

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Re: Ideas, Experiences required for changes managements
by Daniel Vainsencher 01 Apr '03

01 Apr '03

I don't know, I don't think forcing people is the issue here. Most people loading code are loading it either as part of their own code management system, whatever that may be, or from SM, or from the FileList. Whatever tools we make available there, will determine what people can use. In SM, packages of th DVS type, could preferentially be loaded using an appropriate loader, that detects and raises exception for redefinitions. This will be quite easy as soon as we start using services instead of hardwired options in SMLoader. We could start doodling with this now, nothings stopping us. Installing DVS could also add this service to the FileList, and that's most of the coverage needed. We don't need to maintain an absolute invariant here, we need to give people a way to often detect when they're loading something that will cause problems in the future. Daniel Avi Bryant <avi(a)beta4.com> wrote: > > On Mon, 31 Mar 2003, John W. Sarkela wrote: > > > Exactly the point. Perhaps DVS could in the future signal a > > Notification upon redefinition. That way redefinitions could > > be easily loaded (with notifications of redefinitions that are > > typically ignored) but that allows a more careful loader policy > > to intercept the notification, preferably prior to changing the > > state of the image. > > An interesting point. The problem is that most people loading DVS > packages are doing that outside the control of DVS, ie, they're just > filing them in as changesets. This means that any such notification has > to be embedded in the fileout, which gets a little bit ugly - the most > robust thing would be to have a doIt at the top of the fileout that > checked, for each extension method in the package, whether that method > already existed in another package and was about to be overwritten, and > raised a notification if so. > > Perhaps it's time to look at something halfway between Monticello (which I > realistically don't have energy to maintain right now) and DVS - ie, > something that still relies on CVS for versioning, but drops backwards > compatibility with chunk file format. That would allow these kinds of > checks to be made a lot less hackishly, since you'd force people to be > loading the package in the "safe" way. Thoughts? Is there any real > reason to keep using chunk format? > > Avi

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RE: [Q] a couple of questions related to look enhancements
by Brent Vukmer 01 Apr '03

01 Apr '03

Maybe I'm in the minority -- but I like the "over-sized" icons. -----Original Message----- From: Ragnar Hojland Espinosa [mailto:ragnar@linalco.com] Sent: Mon 3/31/2003 3:19 AM To: The general-purpose Squeak developers list Cc: Subject: Re: [Q] a couple of questions related to look enhancements On Sun, Mar 30, 2003 at 01:10:09PM -0800, Avi Bryant wrote: > On Sun, 30 Mar 2003 diegogomezdeck(a)consultar.com wrote: > > > - Which is the feeling of the community about the new set of changes? > > My two cents: some of them I very much like, some of them are not to my My 4 cents (post-euro inflation;): Real nice. > scrollbar "thumb". More or less the same goes for the window icons - the > general direction is good, but they take up too much space for the amount > of detail the icons provide, and to my eye they stand out too much from I'd like to see smaller icons icons too. -- Ragnar Hojland - Project Manager Linalco "Especialistas Linux y en Software Libre" http://www.linalco.com Tel: +34-91-5970074 Fax: +34-91-5970083

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What is supposed to be the effect of DisplayScreen class>depth:width:height:fullscreen: ?
by Tim Rowledge 01 Apr '03

01 Apr '03

This is a very curious primitive. First, there are no senders so I have to wonder if it is actually of any value. Secondly, just what is it supposed to do? Setting the fullscreen flag to true and the width or height to some number not equal to the full screen size does what exactly? Should the prim ignore w & if fullscreen = true? Setting the depth should do what? It can't set the depth of the Display object - that has to be done via methods like DisplayScreen>setExtent:depth:. I suppose it could possibly set the bitdepth of the OS window buffer (where one is used) but that seems like it is private to the VM. I can see a value in having a prim that programmatically sets the window size (which is why I ended up looking at this) but I don't think this prim is entirely suitable nor even properly defined nor even widely implemented. Any thoughts anyone? tim -- Tim Rowledge, tim(a)sumeru.stanford.edu, http://sumeru.stanford.edu/tim Useful random insult:- Lightbulb over his head is burned out

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Concatenating binary files?
by Jimmie Houchin 01 Apr '03

01 Apr '03

Hello, I am ripping a bunch of MP3s from some CDs. Some of the segments were split into separate tracks on subsequent CDs. I am creating wave files of the split tracks and would like to concatenate the 2 wave files so that I could do an MP3 from the single wave file. I tried using StandardFileStream and #nextPutAll: to write the 2 wave files into a single then I got an error because #nextPutAll: accepts only strings. (I forgot) :) From looking at the File and Stream classes I didn't find how to write binary data to a file. I am sure this is simple and I'm just not seeing/understanding how to proceed. Any help or pointers on how to accomplish this is greatly appreciated. Thanks. Jimmie Houchin

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[UNIX][VM][Mac] Can't run Squeak-3.5-1devel VM under Mac OS/X
by Ned Konz 01 Apr '03

01 Apr '03

A couple of problems with Ian's latest Squeak-3.5-1devel sources and the Mac (using MacOS/X 10.2.4, Apple's December 2002 Developer tools): * I get a "bus error" when compiling the ObjectiveC plugin. So I commented it out. (hope I don't need it). * I can't run the resultant Squeak. I get a complaint (after installing it; the library path is compiled in): $ ./squeak ../../Squeak.image arg: ./squeak arg: ../../Squeak.image looking for module vm-display-null ioFindExternalFunctionIn(display_null, -1): symbol not found: _display_null squeak: loaded plugin `/usr/local/lib/squeak/3.5-1devel/vm-display-null.so' displayModule 0x4e50b0 vm-display-null vmName: ./squeak -> /Users/wordy/Desktop/Squeak-3.5-1devel/build/squeak viName: ../../Squeak.image documentName: (null) fstat(4) => 0 image size 0 + heap size 20971520 (useMmap = 1073741824) This interpreter (vers. 6502 cannot read image file (vers. 0 Hit CR to quit Here's the "architecture" part of config.h: #define OS_TYPE "unix" #define VM_HOST "powerpc-apple-darwin6.4" #define VM_HOST_CPU "powerpc" /* #undef VM_HOST_VENDOR */ #define VM_HOST_OS "darwin6.4" #define WORDS_BIGENDIAN 1 /* #undef DOUBLE_WORD_ALIGNMENT */ /* #undef DOUBLE_WORD_ORDER */ /* damage containment */ #define DARWIN 1 Anyone have any ideas about this? Thanks, -- Ned Konz http://bike-nomad.com GPG key ID: BEEA7EFE

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