Squeak-dev December 2002

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173 participants
456 discussions

[Q] perform: selector
by David Faught 20 Dec '02

20 Dec '02

I am trying to make a multipurpose method for attaching labels to morphs and am missing some basic understanding or syntax of how to make it work in Squeak. There is already an 'addLabel: string' method that works fine, and I am defining the method: beLabeled: aSelector self addLabel: (self perform: aSelector asString). and trying to use it as in: aMorph beLabeled: #externalName where I am expecting aMorph to end up with a label containing the text returned by the aMorph externalName method. DOing this line results in a "message not understood" error. What is the right way to do this? Thanks for any help you can provide. I apologize right now for not extensively searching all available documents on SmallTalk to find out how to do this, but sometimes it's just easier to ask. It's not like I haven't looked at all, but obviously I haven't found the right place to look yet. __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

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Re: Subjective Squeak
by Daniel Vainsencher 20 Dec '02

20 Dec '02

I always have two squeak images running - (at least) one development image, and one mail image, with my favorite Celeste goodies and filters loaded. I don't normally load experimental code into the mail image, to avoid screwing it up. Layers/environments, as you say, could theoretically give me this partitioning of code in the image, but in practice, I screw up my development images often enough in ways that this doesn't solve (resources, tight loops without possibility for breaking) that I'd still prefer to trust the OSes address space protection. This could change if Squeak moves towards being more robust in the face of bugs. I think this is a good direction, and definitely possible. For example, it would be nice to be able to log into an image that's misbehaving from telnet, for example, with a high priority prompt, to kill off obnoxious processes. On a related topic, comparing two pieces of code doesn't require this kind of protection. I disagree with Anthony's argument that having everything be classes is better than having two concepts. From a code management perspective, I want to have generalized tools that allow me to compare many versions of code, from various sources (the current SM version, the current version in the image, all the revisions I have in my monticello repository/changeset directory), without all of them being (even potentially) active. I might want to browse another image code without even loading a whole logical "layer" - just peeking at pieces. "What I can look at" and "what I might be running" are better off separate. Daniel Joshua 'Schwa' Gargus <schwa(a)cc.gatech.edu> wrote: > On Wed, Dec 11, 2002 at 04:50:21PM -0500, Brent Vukmer wrote: > > You replied: > > >And downloading packages without worry about > > >conflict. > > > > If a new image becomes quick-n-easy to build, then conflict becomes no > > big deal. Do some quick diagnosis then build afresh! > > But what if you want to use two packages in your everyday Squeaking, but > they conflict with each other? Using two images is not a satisfactory > solution. > > > Also I would > > rather diagnose package conflicts here then in a multi-namespace image. > > But there is no conflict in a multi-namespace image, at least in the > (most important) sense that packages that would stomp on each other in > (A) would coexist and function properly in (B). > > > >Also, having multiple packages in the image available for > > >analysis, that would be conflicting in (A) and therefore not both > > >visible. > > > > I'm trying to imagine a sample scenario where running multiple package > > releases in the same image would be helpful in development... > > What about unifying the underlying code of two packages that conflict? > In (A), you'd have to run each package in a different image as you made > changes to each so that they would be consistent. In (B), you wouldn't > strictly NEED to unify the code, but if you decided to (in the interest > of elegance and orthogonality), it would certainly be easier within the > same image, especially since tools could be built to specifically support > this kind of work. > > <snip> > > Joshua > > > > > > > Cheers, > > Brent > > > > > > > > > > > >

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[Q] perform: selector
by David Faught 20 Dec '02

20 Dec '02

On Friday 20 December 2002 09:15 am, Ned Konz wrote: >On Friday 20 December 2002 08:47 am, David Faught wrote: >> There is already an 'addLabel: string' method that works fine, and >> I am defining the method: >> >> beLabeled: aSelector >> self addLabel: (self perform: aSelector asString). >> >> and trying to use it as in: >> >> aMorph beLabeled: #externalName >> >> where I am expecting aMorph to end up with a label containing the >> text returned by the aMorph externalName method. DOing this line >> results in a "message not understood" error. What is the right way >> to do this? > >David, are you using Connectors still? There isn't a general purpose >Morph #addLabel: method. > >#addLabel: on NCConnectorMorph takes an event, not a string. > >If you just want to add a label with an arbitrary string, you could >use #addLabel:at: or #addLabel:near: and pass the connector's >midpoint (or end, or whatever) as the point. > Yes, I know. I have overridden the NCConnectorMorph's #addLabel: method in my own subclass and added the #addLabel: method to my other morphic subclasses. As I said above, if I do: aMorph addLabel: 'a string' it works just fine. What I am trying to do is make one method that will allow me to add labels with various contents that aMorph already knows about, like externalName and instance variables that have methods returning their values. I am working toward being able to say things like: NetCircuit allBeLabeled: #externalName NetCircuit allBeLabeled: #bandwidth NetCircuit allBeLabeled: #pingTime and choose between these things dynamically without having to write a separate labeling method for each type of label contents. __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

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Specializing TestRunner
by WILLIAMS Dominic 20 Dec '02

20 Dec '02

Hello, I am new to this list and relatively new to Squeak. I am trying to specialize the TestRunner so that it only lists the TestCases of my development project. I have subclassed TestRunner thus: TestRunner subclass: #XProjectUnitRunner ... and redefined the gatherTestNames method thus: gatherTestNames | theNames | theNames _ (TestCase allSubclasses select: [:each | each category = 'XProject-Unit']) asOrderedCollection. ^theNames Unfortunately, when I attempt to open this runner: runner _ XProjectUnitRunner new openAsMorph I get a MessageNotUnderstood: asStringOrText by one of the meta classes of one of my subclasses of TestCase... 1) Any ideas why this happens? (The testcases work fine with the orginal TestRunner class...) 2) Is there another easy way to get what I want (a test runner that only lists TestCase subclasses that are in a particular category). Thanks for your help, Dominic Williams. --------------------------------------------------- Vous êtes à la recherche d'une méthodologie de développement logiciel souple, humaine et efficace? Découvrez "L'eXtreme Programming", Editions Eyrolles, ISBN: 2-212-11051-0 ---------------------------------------------------

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TrueType on MacOS X?
by Marcus Denker 20 Dec '02

20 Dec '02

Hi! I played with Yoshiki's Truetype TextStyle: Very nice. I'd only need some more truetype fonts... I'm running MacOS X, and I'm pretty sure apple is using truetype (after all, they invented it). But I can't find any sensible .ttf font-files on the disc... Does anyone know where to find them? Marcus -- Marcus Denker marcus(a)ira.uka.de -- Squeak! http://squeak.de

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Re: Documentation
by Vincent Coetzee 20 Dec '02

20 Dec '02

Hi there I am attempting to build a clean copy of the squeak sources for Mac OS X Carbon. I downloaded the sources from sourceforge, but I seem to be missing a file that maps between the functions defined in the various files and the available primitives,specifically I get told that the items below are undefined symbols and can not be found by the linker. I have scoured the source code trying to find these definitions and I can find all the imports(ie the extern statements) but I can not find the actual definitions. I am relatively new to working with the squeak VM, and would appreciate someone pointing me in the right direction to find this file or define it. Thanks Vincent _ADPCMCodecPlugin_exports _AsynchFilePlugin_exports _B2DPlugin_exports _B3DAcceleratorPlugin_exports _BitBltPlugin_exports _DSAPrims_exports _DropPlugin_exports _FFTPlugin_exports _FilePlugin_exports _FloatArrayPlugin_exports _InternetConfigPlugin_exports _JPEGReadWriter2Plugin_exports _JPEGReaderPlugin_exports _JoystickTabletPlugin_exports _Klatt_exports _LargeIntegers_exports _MIDIPlugin_exports _Matrix2x3Plugin_exports _MiscPrimitivePlugin_exports _SecurityPlugin_exports _SerialPlugin_exports _SocketPlugin_exports _SoundCodecPrims_exports _SoundGenerationPlugin_exports _SoundPlugin_exports _Squeak3D_exports _StarSqueakPlugin_exports _UUIDPlugin_exports _ZipPlugin_exports _getFullScreenFlag _getInterruptKeycode _getNextWakeupTick _getSavedWindowSize _oldprimSampledSoundmixSampleCountintostartingAtleftVolrightVol _positive64BitIntegerFor _positive64BitValueOf _primFMSoundmixSampleCountintostartingAtpan _primPluckedSoundmixSampleCountintostartingAtpan _primSampledSoundmixSampleCountintostartingAtpan _primWaveTableSoundmixSampleCountintostartingAtpan _setFullScreenFlag _setInterruptCheckCounter _setInterruptPending _setSavedWindowSize _signed64BitIntegerFor _signed64BitValueOf _vm_exports

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os-x 10.2.3, OpenGL 1.4, & croquet
by John M McIntosh 20 Dec '02

20 Dec '02

I'll note that apple shipped os-x 10.2.3 tonight, with OpenGL 1.4. So far Croquet seems fine, but awaiting any bug reports -- ======================================================================== === John M. McIntosh <johnmci(a)smalltalkconsulting.com> 1-800-477-2659 Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ======================================================================== ===

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Edmonton Squeakers?
by Joshua 'Schwa' Gargus 20 Dec '02

20 Dec '02

I'm in Edmonton visiting friends and family, and am wondering if more people have started Squeaking here. When I left, the only other person I knew was Ken Brown. Do any other Squeakers want to get together for a face-to-face? Joshua

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RE: Environment?
by Anthony Hannan 20 Dec '02

20 Dec '02

"Andreas Raab" <andreas.raab(a)gmx.de> wrote: > If you can say something about what you are hoping to achieve by using > environments I might be able to give you a pointer or two (if it's too > delicate just send it off-list). I've been all over it with Bill in order > to get (secured) name spaces for Croquet running so I know some of it. I've been thinking about secure environments too. They were talked about in the "Subjective Squeak" thread last week (aka layers). I describe a simple design at http://minnow.cc.gatech.edu/squeak/1643. Cheers, Anthony

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Fwd: Edmonton Squeakers? (fwd)
by jatzeck＠freenet.edmonton.ab.ca 20 Dec '02

20 Dec '02

***************************************** "We set sail on this new sea * Dr. Bernhard Michael Jatzeck, P. Eng. * because there is new knowledge * * to be gained and new rights to * jatzeck(a)freenet.edmonton.ab.ca * be won, and they must be won ***************************************** and used for the progress of all people." John F. Kennedy at Rice University, Houston, Texas, September 12, 1962 ---------- Forwarded message ---------- Begin forwarded message: > Resent-From: top.gun(a)mail.ualberta.net > I'm in Edmonton visiting friends and family, and am wondering if > more people have started Squeaking here. When I left, the only > other person I knew was Ken Brown. > > Do any other Squeakers want to get together for a face-to-face? > > Joshua Certainly! I'll be in town over the holidays. You can contact me at my Freenet e-mail address if you wish.

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