Squeak-dev April 2006

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177 participants
262 discussions

[MC] Overrides and condenseChanges?
by Andreas Raab 06 Apr '06

06 Apr '06

Hi Guys - I'm planning to do a condenseChanges/condenseSources for the Croquet release and was wondering what this will do to MC overrides (IIRC, the previous versions are used from the changes file). Can somebody give me a primer on what I need to keep in mind when I do this? Thanks, - Andreas

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Re: spreadsheet (was: BookMorph prompt)
by Alan Kay 06 Apr '06

06 Apr '06

Hi Folks -- There's some interesting long ago history wrt Smalltalk and spreadsheets. The first 100 personal computers sold by Xerox (ca. early 80s) were to the CIA and they contained what still may be the most comprehensive extension of the spreadsheet idea (written in Smalltalk of course): From the web: A proprietary Smalltalk system called "The Analyst" built for the intelligence community then leveraged Smalltalk to an incredible degree to form an integrated information handling suite far beyond Office. <http://wiki.cs.uiuc.edu/VisualWorks/The+Analyst>http://wiki.cs.uiuc.edu/VisualWorks/The+Analyst http://www.mojowire.com/TravelsWithSmalltalk/DaveThomas-TravelsWithSmalltal… "Why would Xerox develop an incredible spreadsheet that could display images, conjugate Russian verbs and why did that happen in a strange group called XSIS located in Los Angeles and Washington? Apparently they had an important customer with a lot of complex information to analyze. How did Angela Coppola know that 1000 people would show up for OOPSLA'86 when the PC committee predicted 100-200? What sort of technology could the National Security Administration use to print Chinese leaflets circa 1978? The Xerox Analyst served the CIA as a analytic tool for many years. Even 13 years later it still offers tools more powerful than MSOffice. The Analyst is still alive and well and forms a key component in TI ControlWorks Wafer Fab Automation System." Cheers, Alan At 11:06 AM 4/5/2006, Jecel Assumpcao Jr wrote: >John M McIntosh wrote on Mon, 3 Apr 2006 16:49:40 -0700 > > Well Sophie is an electronic book authoring/reader system, it's to > > replace Powerpoint, Word and most of MS office. > > (Sorry no spreadsheets, but if someone wants to add that?). > > > > Since it's built on top of Tweak & Squeak and completely open-source > > you can choose to add features as you wish. > >While Excel has been fabulously successful, that is not the way I would >go for a Tweak/Squeak/Sophie spreadsheet. Instead my first priority >would be to have the best table layout possible since more people seem >to use Excel for that than for actual calculations (not counting simple >sorting of tables). And having several smaller tables floating around in >a larger document seems nicer to me than a single huge 2D (almost 3D >with tabbed "pages") array, though I can understand how such a >structured space can make some people feel more secure (probably more >veteran users than newbies). > >For the second step it would be interesting to look at The Analyst for >inspiration and allow arbitrary Smalltalk objects and expressions >instead of just numbers and strings. > >Third: I would separate the expressions from the actual cells in the >style of Lotus Improv. This would encourage the users to think in terms >of collections of data like in APL or FScript instead of individual >numbers. It would also make doing things across more than one table less >awkward. The user interface could still present things in terms of per >cell equations when that is more convenient. > >Lastly, having such a component I would use it in Sophie for things like >timelines instead of hand coding stuff in Tweak. > >-- Jecel

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Squeak Chat Monday April 10th 16:00 GMT
by Ken Causey 06 Apr '06

06 Apr '06

Just a reminder that the next Squeak Chat will take place between 16:00 (4 PM) and 20:00 (8 PM) GMT Monday April 10th, 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 20:00 (08:00 PM) GMT Friday April 14, 2006 00:00 (12:00 AM) GMT Wednesday April 19, 2006 04:00 (04:00 AM) GMT Sunday April 23, 2006 08:00 (08:00 AM) GMT Thursday April 27, 2006 12:00 (12:00 PM) GMT Monday May 01, 2006 16:00 (04:00 PM) GMT Friday May 05, 2006 20:00 (08:00 PM) GMT Tuesday May 09, 2006

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RE: A Possibly Interesting Link
by Ramon Leon 06 Apr '06

06 Apr '06

> -----Original Message----- > From: squeak-dev-bounces(a)lists.squeakfoundation.org > [mailto:squeak-dev-bounces@lists.squeakfoundation.org] On > Behalf Of Dan Ingalls > Sent: Thursday, April 06, 2006 12:42 AM > To: The general-purpose Squeak developers list > Subject: A Possibly Interesting Link > > For a good time, try... > > http://Weather-Dimensions.com/Dan/ForwardToThePast.jnlp > On a 3ghz Xeon, Cool... Java.. 12195121 bytecodes/sec; 765220 sends/sec. C.. 131822863 bytecodes/sec; 6299512 sends/sec.

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A Possibly Interesting Link
by David Faught 06 Apr '06

06 Apr '06

Andreas Raab wrote: >Avi Bryant wrote: >> Me too on Safari. But I can just download the .jar file mentioned and >> run it, and it works fine. Cool! > >Ah, you're right. Just going to > > http://weather-dimensions.com/Dan/sSqueakOnJava.jar > >works fine for me. I downloaded the .jar file and can use that directly. I also downloaded the .jnlp/.xml file and saved it locally to play a bit. I was able to get Java Webstart to work locally by changing the .jnlp file so that the codebase and href point to the .jnlp file, not the .jar file, i.e.: <jnlp spec="1.0+" codebase="file:///D:/Apps/JavaSqueak/" href="ForwardToThePast.jnlp"> I also noticed that if I just close the window with the upper-right X icon that the java task doesn't go away and continues to loop after Squeak is gone.

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Re: A Possibly Interesting Link
by Michael Haupt 06 Apr '06

06 Apr '06

Hi, On 4/6/06, Dan Ingalls <Dan(a)squeakland.org> wrote: > Andreas replied... > >On Windows with Firefox all I get is a page saying: > > > ><?xml version="1.0" encoding="utf-8"?> > ><jnlp spec="1.0+" > >... > ></jnlp> > > and Avi added... > > >Me too on Safari. But I can just download the .jar file mentioned and run it, and it works fine. Cool! > > I don't know what the problem is. On my Mac, in Safari it downloads the jnlp file, then launches, and in Firefox, it launches straight off. possibly, Java WebStart is not properly configured on the client machines. My browser (Safari) also just displays the JNLP file's XML syntax. Still, downloading the JAR directly works fine, and the benchmarks yield the following (on a G4 Powerbook, 768 MB RAM, 1 GHz): Squeak 3.8.9beta8: 59,925,093 bytecodes/sec; 3,361,587 sends/sec Java 1.4.2_09: 5,759,539 bytecodes/sec; 332,188 sends/sec Java 1.5.0_05: 5,657,708 bytecodes/sec; 331,012 sends/sec Overheads (Java 1.4 over Squeak 3.8): 10.4 for bytecodes; 10.1 for sends. It's interesting that the Java 5 VM appears to be slightly slower when it comes to running Squeak than the 1.4 one, but that's something for the VM hackers at Apple to consider. :-) This is very nifty! Thanks for the work! Best regards, Michael Haupt

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Re: spreadsheet (was: BookMorph prompt)
by Darius Clarke 06 Apr '06

06 Apr '06

On 4/5/06, Jecel Assumpcao Jr <jecel(a)merlintec.com> wrote: > While Excel has been fabulously successful, that is not the way I would > go for a Tweak/Squeak/Sophie spreadsheet. +1 > Instead my first priority > would be to have the best table layout possible since more people seem > to use Excel for that than for actual calculations (not counting simple > sorting of tables). And having several smaller tables floating around in > a larger document seems nicer to me than a single huge 2D (almost 3D > with tabbed "pages") array,... +1 > For the second step it would be interesting to look at The Analyst for > inspiration and allow arbitrary Smalltalk objects and expressions > instead of just numbers and strings. +1 > > Third: I would separate the expressions from the actual cells in the > style of Lotus Improv. This would encourage the users to think in terms > of collections of data like in APL or FScript instead of individual > numbers. It would also make doing things across more than one table less > awkward. +1 >The user interface could still present things in terms of per > cell equations when that is more convenient. -1 Can't imagine when such would be more convenient, if one allows for a view where the formula-cell is temporally, visually juxtaposed or interleaved with the value-cells. I'd also allow for nesting table layouts so it can represent web pages and other formats. I'd also allow for any cell to function as a stack, like a cell-by-cell undo rather than a whole sheet undo. The stack might also have a date/time attribute for popping the stacked cell or a range of stacked cells back to a certain time or a certain value. Allow the data in a cell to have an expiry date, review for deletion date (by self and/or others), and/or archive off to persistent storage and then delete date. Rather than separate sheets with tabs like a document with separate pages, one might consider it just one very, very long spreadsheet (that can be folded for various views). This matches the linear thinking (and narrative thinking) that most humans stick with. If you search for something, it's always either above where you're at or below. Skip document searches vs. sheet searches vs. page searches vs. row searches vs. column searches, vs. formula searches, vs. ... etc. Any range and any scope can be give a label for assist in simple search syntax. Allow a range of rows & columns to be collapsed like an outline in certain views. Allow the toggling of the appearance of a selection of conjoined cells between a horizontal view, vertical view, and nested view. Rather than "e-mail" the sheet or document ... mark a cell or range of cells to be directly shared real time, copy duplicated, or subscribed and the destination user, computer, and/or universally addressed "Squeaksheet" peer. This way it doubles as a communication method in context with the associated data, preserving format, programming code, and imbedded multi-media across domains, yet more finely grained than e-mail. Other attributes could include permission allowing other users' changes to be replicate back, or if shared with a range of peer and how communities can interact with that cell or range of cells, and to preserve a copy of the cell's content if the original linked source disappears. Allow cells to be categorized and another way to identify them. Try to reduce the number of top-level columns to stay within the 7+/-2 suggested short-term memory range. Allow cells to be directly used for the visual grids in line graphs and bar graphs. Parse Smalltalk code (formulas) into nested grid tiles as eToys does (and class definitions too). Allow nested cell ranges to be used as inspectors of class instances. [and so on... :) ] Cheers, Darius

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[ANN] ESUG 2006 Awards
by Noury Bouraqadi 06 Apr '06

06 Apr '06

Dear Smalltalkers, The European Smalltalk Users Group (ESUG) is proud to announce its 3rd Innovation Technology Awards. The top 3 teams with the most innovative software will receive, respectively, 500 Euros, 300 Euros and 200 Euros during an awards ceremony at the 14th International Conference 2006. Please note that any Smalltalk-based software is welcome to compete (stand-alone or web applications, tools for developers, educational tools, games, ...). So, submit your software now ! More on the web : http://www.esug.org/conferences/ 14thinternationalsmalltalkconference2006/innovationawards/ Noury -------------------------------------------------------------- Dr. Noury Bouraqadi - Enseignant/Chercheur Ecole des Mines de Douai - Dept. G.I.P http://csl.ensm-douai.fr/noury European Smalltalk Users Group Board http://www.esug.org Squeak: an Open Source Smalltalk http://www.squeak.org --------------------------------------------------------------

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Re: Semantics of Set>>new in Squeak 3.9 -- To initialize or not to
by Wolfgang Helbig 06 Apr '06

06 Apr '06

Hi List, Nicolas observed: >So there are two possible implementations of new: >The one in Behavior for classes really declared as variableSubclass > (self basicNew: n) initialize >The one in other classes, faking an indexable behaviour, but implementing this >behaviour indirectly by the mean of an indexable instance variable > (self basicNew) initialize: n Why do we need two implementations if one suffice? If I am not mistaken, classes that are defined as variableSubclass in ST-80 are defined as subclass in Squeak. Is this a tendency of modern Smalltalk systems. And if so, why? Regards, Wolfgang -- Weniger, aber besser.

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[ANN] methods with more than 15 arguments do now compile and execute
by nicolas cellier 06 Apr '06

06 Apr '06

I finally decided to implement the work around for getting over the 15 arguments byte code limit. I now have this test working correctly in my image: test17args self class compile: 'a1: a1 a2: a2 a3: a3 a4: a4 a5: a5 a6: a6 a7: a7 a8: a8 a9: a9 a10: a10 a11: a11 a12: a12 a13: a13 a14: a14 a15: a15 a16: a16 a17: a17 ^a1+a2+a3+a4+a5+a6+a7+a8+a9+a10+a11+a12+a13+a14+a15+a16+a17'. self assert: (self a1:1 a2:2 a3:3 a4:4 a5:5 a6:6 a7:7 a8:8 a9:9 a10:10 a11:11 a12:12 a13:13 a14:14 a15:15 a16:16 a17:17) = (17*18/2). I simply implement the caller as sending a single argument array (thanks to BraceNode) and the callee to also have a single array argument and access individual arguments sending at: to the array argument (thanks to MessageAsTempNode subclass created on purpose). The change is only for 3.9 old compiler (Parser/Encoder/MessageNode), and remains quite cosmetic (few lines added). But how tricky this old compiler is programmed, this should be much easier with the newCompiler (i hope so). Of course, decompiler debugger tiles etc... are broken when they encounter this kind of method... They need hacking too. FFI with more than 15 arguments will also have to be hacked, but this one is easier. I did not much like the sap returned when inquiring pattern and created a SmalltalkPattern class to handle selector/arguments/precedence and also all tricks related to 16 args. That should ease things. when code is stabilized i will put on mantis because it is general purpose. Nicolas

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