Squeak-dev March 2001

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139 participants
508 discussions

Re: Squeak swiki down--any alternates?
by Russell Allen 05 Mar '01

05 Mar '01

Dan: Yep, it's a rendered version from a little while ago. I am in the middle of writing a script to automatically update the mirror, but haven't finished it yet (bit short of time at the moment). :) Russell Dan Shafer <dshafer(a)yahoo.com> wrote: > Glad there's a mirror but it doesn't _seem_ to be very current. Seems like > latest alpha mirrored there is a 2.9 version. > > --- Russell Allen <russell.allen(a)firebirdmedia.com> wrote: > > Ross: > > > > Try http://swikimirror.squeakspace.com > > > > :) > > Russell > > > > Ross Boylan <RossBoylan(a)stanfordalumni.org> wrote: > > > FYI here's some info on the squeak swiki. It's down for awhile. > > > > > > Does anybody know anywhere to look for a mirror? > > > > > > >Delivered-To: stanfordalumni.org%RossBoylan(a)stanfordalumni.org > > > >X-Received: 5 Mar 2001 00:36:00 GMT > > > >Date: Sun, 4 Mar 2001 19:35:56 -0500 > > > >From: "Jochen F. Rick" <nadja(a)cc.gatech.edu> > > > >To: Ross Boylan <RossBoylan(a)stanfordalumni.org> > > > >Subject: Re: [swiki-bugs] No access to squeak swiki > > > >User-Agent: Mutt/1.2.5i > > > > > > > >Thanks. The server is down. Since it's a Mac and we have spring break, it > > > >probably will not be up for a while. I believe someone has a rendered > > > >version if you want to check some stuff. Check on squeak.org. > > > > > > > >Peace and Luck! > > > > > > > >Je77 > > > > > > > >Thanks though ---------------------------------------------------------------- Russell Allen - russell.allen(a)firebirdmedia.com http://www.squeakspace.com Squeak Multimedia Free webspace for Squeakers ----------------------------------------------------------------

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Re: everybuddy
by Dino 05 Mar '01

05 Mar '01

Brian Zhou wrote: > > Hi Squeakers, > > Happen to bump into http://www.everybuddy.com which is quite interesting. > Only wish it was in Squeak. Having GNU/Linux as their base, they kinda limit > the application to linux/unix only, and they have to re-invent wheels as to > HTML parsing, multimedia support etc. > > Just wondering if there will be any problem license-wise if someone want to > port GNU licensed software into squeak? Since you're looking at everybuddy, I'm guessing you're looking for a AIM/ICQ clone eh? I've written one called IWIN that handles both ICQ and AIM though I havent updated it in ages. (it works though) I think you can still access it at http://instantmessaging.swiki.net. Dean

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Re: [Win32] just another VM update (3.1 alpha build 1)
by Lex Spoon 05 Mar '01

05 Mar '01

"Raab, Andreas" <Andreas.Raab(a)disney.com> wrote: > * dynamic growth of ObjectMemory: > Yeah! Finally. No more -memory:, no more space low warnings unless you *are* > out of memory. Note that this is why I consider it a 3.1alpha1 VM; the > changes do work with older images but it's really a 3.1 feature. If you're > updated through the last series of changes that Dan posted for 3.1 then you > should get this VM and do a "space left" - could be interesting ;-) > [BTW, if you're interested in what is going on under the hood, then go into > the VM preferences and turn on "show allocation activity" - this will print > out when the OM is actually growing and shrinking] > IMPORTANT: If you're planning to use this VM with 3.0 images you should get > the change set 3723SizeHint-ar from the 3.1 update stream. Otherwise it > might be that the project publishing mechanism tries to allocate huge (and I > mean: HUUUUGGGGGEEEEE) amounts of memory. It'll work without the CS but it's > a gigantic waste of resources. > Awesome!! Attached is a quick implementation for anyone who wants to play with it in Unix. It mmap's 500 Megs from /dev/zero, which on most Unices will both work and will not actually waste the memory until it's used (at which point it's not really wasting, now is it?). Be aware that you need a recent interp.c and sq.h to take advantage of them. I've also got patches, by the way, that make the VM pick an initial allocation based on the size of the image file, meaning you don't need -memory at all any longer. However, that's a more intrusive patch than what's below. -Lex

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Re: Squeak swiki down--any alternates?
by Russell Allen 05 Mar '01

05 Mar '01

Ross: Try http://swikimirror.squeakspace.com :) Russell Ross Boylan <RossBoylan(a)stanfordalumni.org> wrote: > FYI here's some info on the squeak swiki. It's down for awhile. > > Does anybody know anywhere to look for a mirror? > > >Delivered-To: stanfordalumni.org%RossBoylan(a)stanfordalumni.org > >X-Received: 5 Mar 2001 00:36:00 GMT > >Date: Sun, 4 Mar 2001 19:35:56 -0500 > >From: "Jochen F. Rick" <nadja(a)cc.gatech.edu> > >To: Ross Boylan <RossBoylan(a)stanfordalumni.org> > >Subject: Re: [swiki-bugs] No access to squeak swiki > >User-Agent: Mutt/1.2.5i > > > >Thanks. The server is down. Since it's a Mac and we have spring break, it > >probably will not be up for a while. I believe someone has a rendered > >version if you want to check some stuff. Check on squeak.org. > > > >Peace and Luck! > > > >Je77 > > > >Thanks though ---------------------------------------------------------------- Russell Allen - russell.allen(a)firebirdmedia.com http://www.squeakspace.com Squeak Multimedia Free webspace for Squeakers ----------------------------------------------------------------

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Connectors Features
by Sebastian Wain 05 Mar '01

05 Mar '01

Ned, How can I access the text attached in the connector morph? I am "migrating" my own classes about Automatas to the connectors, because I can draw the automatas with the connectors and run it (The Automata class is a subclass of ComponentLayout, I draw the DFA and execute it within), so I am reading all the submorphs from the Automata to construct the internal representation of the automata and I am searching for the relation between the connector and the label to build the transitions. Thank You Sebastian Wain

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Squeak swiki down--any alternates?
by Ross Boylan 05 Mar '01

05 Mar '01

FYI here's some info on the squeak swiki. It's down for awhile. Does anybody know anywhere to look for a mirror? >Delivered-To: stanfordalumni.org%RossBoylan(a)stanfordalumni.org >X-Received: 5 Mar 2001 00:36:00 GMT >Date: Sun, 4 Mar 2001 19:35:56 -0500 >From: "Jochen F. Rick" <nadja(a)cc.gatech.edu> >To: Ross Boylan <RossBoylan(a)stanfordalumni.org> >Subject: Re: [swiki-bugs] No access to squeak swiki >User-Agent: Mutt/1.2.5i > >Thanks. The server is down. Since it's a Mac and we have spring break, it >probably will not be up for a while. I believe someone has a rendered >version if you want to check some stuff. Check on squeak.org. > >Peace and Luck! > >Je77 > >Thanks though

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Re: How to execute external programs across platforms?
by bparsia＠unc.edu 05 Mar '01

05 Mar '01

--On Friday, March 02, 2001 6:04 PM -0800 Ned Konz <ned(a)bike-nomad.com> wrote: > OK, I know how to spawn an external program under Unix (use the > UnixOSProcess plugin, though I've not yet built one for 3.0). > > But how do I do this for, say, the Mac? Use the applescript support, would be my first move. the "open" (whatever) appleevent is pretty universally supported now. Of course, for MacOSX, there will be other options, I'd imagine. > Or for Win32? > > Is there anyone working on OSProcess versions for these platforms? No. But there should be! (Or, at least, not that I know of, but there should be and I should know about it. :)) Cheers, Bijan Parsia.

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Re: [updates] 29 new ones for 3.1alpha
by Helge Horch 05 Mar '01

05 Mar '01

At 15:33 04.03.2001 -0800, Dan Ingalls wrote: >3756ClassReshapes -- Andreas Raab -- 2 March 2001 >The change set reformulates most of the mutation mechanism in >ClassBuilder. The class builder now mutates both, any old instances and >the class itself into the new one in a single step. The CS also introduces >a primitive for changing the class of an object provided that the format >of the new class is acceptable. [...] Oh, um -- wow! Snipped from Andreas' changeset: > ClassBuilder removeSelector: #fixObsoleteMethodsFrom:map:! I had a patch in the queue here, maybe it (attached) still applies to 3.0? Cheers, Helge

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[BUG] Exception handling #ensure: and #return:
by Raab, Andreas 05 Mar '01

05 Mar '01

Folks, We just found out (the hard way of course) that there is a serious problem in exception handling. It appears that using #return: deeply in a stack that's protected somewhere on top by #ensure: will lead to some rather weird effects. Here's a short example: Object>>testMethod ^[self primitiveFailed. true] on: Error do:[:ex| ex return: false]. Object>>runTestMethod | vv | [ vv _ self testMethod. vv ifTrue:[Transcript cr; show:'vv is true'] ifFalse:[Transcript cr; show: 'vv is false']. ] ensure: [ Transcript cr; show: 'Done with it']. Obviously the transcript should say "vv is false" and then "done with it". But if you try it, you'll see that it prints *nothing* at all. Looking closer, it seems that the handling of ExceptionAboutToReturn in BlockContext>>valueUninterruptibly is broken. It never checks if the context we're returning to is actually above that handler context so that whenever we #return we will do some weird stuff on the stack which is not affected at all by the return. Attached is a CS that attempts to fix the problem. Since I don't have a very deep understanding about the EH stuff I'd appreciate it if somebody with a deeper understanding could have a look at it and say it's okay or fix whatever needs to be fixed. Thanks, - Andreas

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Voice Synthesis Question
by Harry E. Fassl 04 Mar '01

04 Mar '01

I've been experimenting with synthesizing speech from text contained in a file external to the image. I've had to make two modifications to Speaker>>say. (See below) The first change is the modification of the literal1000 to 110. If I leave the code at 1000, the delay between reading the line and the beginning of 'speaking' is unacceptably long. My guess is that this is/was processor speed dependent and maybe needs an instance variable, with a default at init time and a setter. (I'm running a B&W G3 @450MHz) The second change is to have Speaker>>say return events duration. This is used to pause the Speaker between lines. Otherwise the next line read starts playing before the previous line finishes. (See the workspace code below below) Running Squeak 3.0 image Latest update #3545, VM30Alph7MT Questions are Am I going to step on something else by making these changes? (Methodolgy suggestions for researching this graciously accepted.) Is there a better way to get the result I'm after? Harry -- H.E.Fassl http://www.mcs.net/~hefassl say: aString | events stream string | events _ CompositeEvent new. stream _ ReadStream on: (aString findTokens: '?' keep: '?'). [stream atEnd] whileFalse: [string _ stream next. stream atEnd ifFalse: [string _ string , stream next]. events addAll: (self eventsFromString: string)]. events playOn: self voice delayed: events duration * 110. "**Modified from 1000**" self voice flush. ^ events duration "**Returned for use with Delay to pause between lines.**" WORKSPACE SNIPPET |voiceFile voiceText thisSpeaker thisVoice crcr timeDelay| Transcript clear. SoundPlayer stopReverb. crcr _ String with: Character cr with: Character cr. voiceFile _ StandardFileStream oldFileNamed: 'Nativity.text'. thisVoice _KlattVoice new tract: 11.7;breathiness: 0.32;shimmer: 0.1;ro: 0.7;rk:0.45;ra: 0.008. thisSpeaker _ Speaker new voice: thisVoice. thisSpeaker pitch: 210.0; speed: 0.613. [voiceFile atEnd] whileFalse: [voiceText _ ((voiceFile upTo: Character cr) copyReplaceAll: crcr with: '') withBlanksTrimmed. Transcript show: voiceText;cr. timeDelay _ Delay forSeconds: (thisSpeaker say: voiceText) + 1. "Pause between lines to avoid next line starting before this one is finished." timeDelay wait. ]. voiceFile finalize.

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