Squeak-dev December 2001

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137 participants
354 discussions

[TECH] SerialPort info
by Bergel Alexandre 28 Dec '01

28 Dec '01

Hello, It seems there is some lacks about the implementation of serial port in Squeak (as no timeout control, or even threshold). Am I right ? I am playing with the RCX (from Lego Mindstorm) but there is some problems. It seems I could send some data toward the yellow brick (by the green light indicator on the tower), but I get absolutely no anwser from the brick. Anyone has any ideas ? I am actually working under windows. Thanks, Alexandre

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Re: Opening cross-platform images
by Jim Rosenberg 28 Dec '01

28 Dec '01

I wrote: > Can anyone tell me the incantation to get Carbon Squeak on OS X to see an > image on a file server created under Windows? There *has to be* a way to do > this ... I'm still clueless as to how to do this under MacOS 9, but under OS X (UNIX wins again!!) the following regime, while disgusting, will work: 1. Create an image that OS X Carbon Squeak will open. Inside Squeak do save as and save the image under the name you would like to copy from your "foreign" file server. 2. Copy the "foreign" image to some temp directory under Mac OS X. (This step can be omitted if you're using NFS or some other file system for which the following command will work directly.) 3. At the shell, overwrite .image and .changes files you made in step 1 by dd'ing them from the files you made in step 2. Woila, Carbon Squeak will now see and open the image. --- Jim Rosenberg http://www.well.com/user/jer/ CIS: 71515,124 WELL: jer Internet: jr(a)amanue.com

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Re: squeak
by Bruce ONeel 28 Dec '01

28 Dec '01

Hi, I'm sorry that you are having problems. I do not have access to a Win95 system so I am unable to help, but, I added the squeak development mailing list into the reply and I'm sure someone there can give you some aid. Good luck! cheers bruce "RLCC Willenberg" <oiler(a)teleport.com> wrote: > This is a multi-part message in MIME format. > > ------=_NextPart_000_0007_01C18ED9.8A01B660 > Content-Type: text/plain; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > Every time i install squeak it causes software conflicts and most of my = > programs won't work any more. I am running win95 osr2. i have norton = > system works and net protection. i have star office 5.2. and i have = > tried ms office 97. my photo editors and many others will not work for = > long. everything crashes. I have 256 ram. everything was working until i = > installed squeak. i tried version 2.7 from the book. I just down loaded = > version 3.=20 > Do I have to reinstall everything to make it work or is squeak still = > buggy? I need some help here. I am learning to program and I don't = > understand what's going on. any help would be great. > > ------=_NextPart_000_0007_01C18ED9.8A01B660 > Content-Type: text/html; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> > <HTML><HEAD> > <META http-equiv=3DContent-Type content=3D"text/html; = > charset=3Diso-8859-1"> > <META content=3D"MSHTML 5.50.4522.1800" name=3DGENERATOR> > <STYLE></STYLE> > </HEAD> > <BODY bgColor=3D#ffffff> > <DIV><FONT size=3D2>Every time i install squeak it causes software = > conflicts and=20 > most of my programs won't work any more. I am running win95 osr2. i have = > norton=20 > system works and net protection. i have star office 5.2. and i have = > tried ms=20 > office 97. my photo editors and many others will not work for long. = > everything=20 > crashes. I have 256 ram. everything was working until i installed = > squeak. i=20 > tried version 2.7 from the book. I just down loaded version 3. = > </FONT></DIV> > <DIV><FONT size=3D2>  Do I have to reinstall everything to make it = > work or is=20 > squeak still buggy? I need some help here. I am learning to program and = > I don't=20 > understand what's going on. any help would be = > great.</FONT></DIV></BODY></HTML> > > ------=_NextPart_000_0007_01C18ED9.8A01B660--

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[ENH] Collection-withdoseparatedBy
by sd 28 Dec '01

28 Dec '01

from preamble: "Change Set: Collection-withdoseparatedBy Date: 28 December 2001 Author: sd Define with:do:separatedBy: in sequenceableCollection. Example: | stream | stream := ReadWriteStream on: (String new). #(1 2 3) with: #(a b c) do: [:fromOne :fromTwo | stream nextPutAll: fromOne asString ; nextPutAll: fromTwo asString] separatedBy: [stream cr]. stream contents = '1a 2b 3c'"!

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[Bug?] Popup Menu behavior change
by Ross Boylan 28 Dec '01

28 Dec '01

After taking in the latest changes the menu behavior has changed in a way that seems like a bug. I have some morphs which popup a menu on middle mouse button click. Here's some of the code: mouseDown: evt | aMenu | evt ifNil: [^super mouseDown: evt]. (evt isMouseDown and: [ evt yellowButtonChanged.]) ifFalse: [^super mouseDown: evt]. aMenu _ self actionMenu. aMenu openInHand. actionMenu returns a MenuMorph. Old Behavior: the menu came up under the cursor. You move the cursor and click to make a selection. New Behavior: the menu comes up under the cursor. Moving the cursor moves the menu. To select, one must click and drag the mouse to the proper position, then release. I've looked a bit at the code in some of the menu changes, but don't see anything obvious. For example, the arrow keys seem not to be active when the menu pops up to make the selection. I'd like to restore the old behavior.

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Re: [Bug] error on file in 4483makeThumbNailTweak2-di
by Ross Boylan 28 Dec '01

28 Dec '01

This note is just to confirm the diagnosis and cure of the previous messages. I just put out a change set that fixes the error. With it, I can take in all the changes. For those not following the details: there was nothing wrong with the update changeset; the error was in some code I introduced. The fix I just put out fixes that bug. On Player56, which Doug mentioned, I've noticed that some classes seem to get created dynamically during fileins. I'm not sure of the exact mechanism, but there is not Player56 class in my image when I look (even while in the debugger, as I recall). Thanks to Scott for catching this, and to everyone for their help.

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[Bug] error on file in 4483makeThumbNailTweak2-di
by Ross Boylan 28 Dec '01

28 Dec '01

[I tried to post this a couple of days ago, but it looks as if it didn't go.] I am unable to take in the changes from the servers because at 4483makeThumbnailTweak2-di I get an error in the poststscript, specifically, doing Flaps replaceWidgetsFlap. This leads to Player56(Model)>>veryDeepFixupWith:, which finds that originalDependents is nil and throws an exception. My original message had a lovely list of suspects; here is my attempted recreation. There must be something peculiar to my environment that is doing this, since it's an old update and there were no other complaints I noticed. 1. My daughter dragged something weird onto the widgets flap, or did something weird to it (she loves the bouncing atoms). However, nothing looks unusual there. 2. Something about taking this in with a bunch of earlier updates (I started at 4441) causes trouble. 3. My VM, really 3.0 on Debian GNU/Linux (though I'm at 3.2 alpha with the image) is the culprit. 4. The flap I created (which is not a part bin or anything special) is really the source of the problem. 5. Some local change I've made (tweaks to the publishing process come to mind, though they were fixes) interacts badly with the update. This assumes the debugger info is accurate, and on some attempts (this failure is repeatable) all my instance variables have been nil. So maybe the info is not accurate.

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[FIX] DeepCopy
by Ross Boylan 28 Dec '01

28 Dec '01

from preamble: "Change Set: DeepCopy Date: 27 December 2001 Author: Ross Boylan Get right semantics for dependents."!

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[ENH] BlockContext>>doOnlyOnce (was Re: #doOnlyOnce)
by Doug Way 28 Dec '01

28 Dec '01

Here's a repost of Torge's BlockContext>>doOnlyOnce enhancement with the proper subject, so it'll get tracked and then we can remember to harvest it. :) - Doug Way dway(a)riskmetrics.com -------- Original Message -------- Subject: Re: #doOnlyOnce (was Re: [BUG] '3 + 4' crashes Squeak ...) Date: Fri, 5 Oct 2001 12:29:27 -0500 From: "Torge Husfeldt" <jean-jacques.gelee(a)gmx.de> Reply-To: <squeak-dev(a)lists.squeakfoundation.org> To: <squeak-dev(a)lists.squeakfoundation.org> Changesets ready for testing. the first is more lightweight. the second is the full monty PhiHo Hoang wrote: > > Hi Doug, > > > [self halt] doOnlyOnce. > > This is neat, I like it. But is it sementically the same as: > > self doOnlyOnce: [self halt]. > > If you have a change set, I volunteer to test it ;-) > > Cheers, > > PhiHo > > ----- Original Message ----- > From: "Doug Way" <dway(a)riskmetrics.com> > To: <squeak-dev(a)lists.squeakfoundation.org> > Sent: Thursday, October 04, 2001 8:06 PM > Subject: #doOnlyOnce (was Re: [BUG] '3 + 4' crashes Squeak ...) > > > > > "Randal L. Schwartz" wrote: > > > > > > In that case, what you really want is a DoOnlyOnce class subclassed > > > from Object, as a singleton, with the protocol: > > > > > > DoOnlyOnce arm "in a do-it" > > > > > > ... > > > > > > DoOnlyOnce once: [self halt] "in a method" > > > > Looking at this (and our earlier exchanges), and noticing that we're > trying to find a place to hang a method which is always passed a block... > now I'm thinking that the best way to handle it would be to add an instance > method to BlockContext, so that the usage becomes simply: > > > > [self halt] doOnlyOnce. > > > > (Or, in keeping with other BlockContext methods, maybe #valueOnlyOnce. > But somehow #doOnlyOnce seems better.) > > > > The #rearmOneShot method would become a class method for BlockContext. > > > > > ... > > > I know. "Changesets welcome" :) > > > > Yes. Not that it would be hard to make this changeset, but I'd rather > wait until the violent disagreement subsides first... :) > > > > - Doug Way > > dway(a)riskmetrics.com > > > > 'From Squeak3.0 of 4 February 2001 [latest update: #3552] on 5 October 2001 at 6:37:38 pm'! !BlockContext methodsFor: 'evaluating' stamp: 'th 10/5/2001 18:18'! doOnlyOnce Smalltalk at: #OneShotArmed ifAbsent:[ Smalltalk at:#OneShotArmed put: false. self value]. ! ! 'From Squeak3.0 of 4 February 2001 [latest update: #3552] on 5 October 2001 at 7:27:18 pm'! "Change Set: DoOnlyOnceRefD-th Date: 5 October 2001 Author: Torge Husfeldt " ProtoObject confirmRemovalOf: #doOnlyOnce. ProtoObject confirmRemovalOf: #rearmOneShot. "Moves the doOnlyOnce functionality >from ProtoObject to BlockContext The Syntax for a one-shot changed by this from: self doOnlyOnce:[self halt] to: [anObject halt] doOnlyOnce This has the following positive consequences: ProtoObject gets a little lighter in methods. The one-shot mechanism now works with more granularity. Every one-shot Block is executed once no matter if the one-shot has already been used. Every one-shot Block can be rearmed individually."! ContextPart variableSubclass: #BlockContext instanceVariableNames: 'nargs startpc home ' classVariableNames: 'OneShotsFired ' poolDictionaries: '' category: 'Kernel-Methods'! !BlockContext methodsFor: 'evaluating' stamp: 'th 10/5/2001 19:27'! doOnlyOnce "If the 'one-shot' mechanism is armed, evaluate self once and disarm the one-shot mechanism. To rearm the mechanism, evaluate 'BlockContext rearmOneShotsFor: Class->#selector' manually. If you have the Block handy you can also do 'aBlock rearmOneShot'" self class oneShotsFired at: self ifAbsent: [| rclass selector | rclass _ self receiver class. selector _ rclass selectorAtMethod: self method setClass:[:c]. self class oneShotsFired at: self put:(rclass -> selector). self value] ! ! !BlockContext methodsFor: 'evaluating' stamp: 'th 10/5/2001 19:18'! rearmOneShot "Call this manually to arm the one-shot mechanism; use the mechanism in code by calling <a block> doOnlyOnce" self class rearmOneShot: self! ! !BlockContext class methodsFor: 'as yet unclassified' stamp: 'th 10/5/2001 19:14'! oneShotsFired "utility method for the one-shot mechanism; lazily initialized (see #doOnlyOnce on instance side)" ^OneShotsFired ifNil:[OneShotsFired _ Dictionary new]! ! !BlockContext class methodsFor: 'as yet unclassified' stamp: 'th 10/5/2001 19:13'! rearmAllOneShots "utility function for the one-shot mechanism (see #doOnlyOnce on instance side)" OneShotsFired _ nil.! ! !BlockContext class methodsFor: 'as yet unclassified' stamp: 'th 10/5/2001 19:14'! rearmOneShot: aBlock "utility function for the one-shot mechanism. Reams the mechanis for aBlock" OneShotsFired ifNil:[^ self] ifNotNil: [OneShotsFired removeKey: aBlock ifAbsent:[]]! ! !BlockContext class methodsFor: 'as yet unclassified' stamp: 'th 10/5/2001 19:17'! rearmOneShotsInMethod: aClassSelectorPair "utility function for the one-shot mechanism. Reams the mechanism for all blocks in a method. aClassSelctorPair is really an association. The key must be the implementor class. The value must be a symbol(selector)" OneShotsFired ifNil:[^ self] ifNotNil: [OneShotsFired keysAndValuesRemove: [:key :value | value = aClassSelectorPair]]! ! ProtoObject removeSelector: #doOnlyOnce:! ProtoObject removeSelector: #rearmOneShot!

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[CVS]Anyobdy know how to mirror a cvs repository?
by Tim Rowledge 27 Dec '01

27 Dec '01

For various reasons not too important here, I'd like to be able to keep a repository on my linux macinhe that is a mirror of the cvs.squeak.sourceforge.net repository. I had thought that simply using cvs to get the latest files from SF followed by using cvs to commit changes to my local repository (which is the one that SF was originally built from!) would do the job. However it seems a bit more complicated than that. Could anybody tell me how to do it, or point me to doc on how to do it? tim -- Tim Rowledge, tim(a)sumeru.stanford.edu, http://sumeru.stanford.edu/tim Strange OpCodes: MBR: Move Bits Randomly

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