Squeak-dev November 2007

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142 participants
155 discussions

RE: [ANN] ICal occurrence API
by J J 30 Dec '07

30 Dec '07

>From: "Alan Lovejoy" <squeak-dev.sourcery(a)forum-mail.net> >Reply-To: The general-purpose Squeak developers >list<squeak-dev(a)lists.squeakfoundation.org> >To: "'The general-purpose Squeak developers >list'"<squeak-dev(a)lists.squeakfoundation.org> >Subject: RE: [ANN] ICal occurrence API >Date: Mon, 28 May 2007 12:54:48 -0700 > >I fully intend to have a look at your code--after I've completed my >implementation. However, I don't plan on implementing a parser for >iCal--the only goal is to be able to specify/represent (and fully and >correctly implement) the iCal rule model. I didn't either. The iCalendar package made by Philippe does all that, it just didn't do anything with the recurrence rules once made. > Actually, the Chronos recurrence >rule model goes beyond what can be specified using the iCal rule >model/notation. Using an algebra enables support for logical negation and >disjunction, among other things (consider what Chalten does with its >TimeLineFilter, for example.) That sounds cool. I went for the Recurrence rule standard which is ugly, ambiguous and, though my test coverage didn't point anything out, I think even self-contradicting. I don't know anything about recurrence rule algebra but it sounds good. :) >I'm also working on full support for business date arithmetic. I intend to >meet or exceed the capabilities offered by jFin >(http://jfin.org/date_adjustment) or ObjectLab >(http://objectlabkit.sourceforge.net/), and to use the data provided by >FinancialCalendar.com (http://financialcalendar.com/). Very cool. >As for "thunder stealing," that goes with the territory when two or more >projects are in the same functional domain. My goal is to implement the >world's best date/time library in any language--and I've been working hard >at it since October 2004. I feel I've already achieved parity with >anything >else out there. Now it's time to go to the next level. I wasn't mad or anything. Just joking because of the timing of it. :) But yes, now that you point it out, it would make more sense that the recurrence calculation code be with a time library, whether you use anything of mine or not. I learned a lot in the doing. >But, since my main motivation for making Chronos the best date/time library >in the world is to help promote Smalltalk, I actually welcome any and all >contributions by others to that goal. And based on the description, your >iCal engine certainly seems to be a worthy contribution. Thanks. I don't know how much of my stuff will be usable for you. I got the approach from Haskell. Basically the strategy is that the frequency creates an infinite list of "periods" which are the same thing as a TimeSpan but with a different interface. All constraints (e.g. BYDAY) are applied to the period stream they get, and they generate the next period stream from it. Once you get through all the constraints you should have the dates. >Working together, we can leave Smalltalk's competition in the dust. And >inspire those working on Smalltalk projects in domains other than >dates/times to do the same. > >Go Smalltalk! > >--Alan That is what I want as well. :) _________________________________________________________________ PC Magazines 2007 editors choice for best Web mailaward-winning Windows Live Hotmail. http://imagine-windowslive.com/hotmail/?locale=en-us&ocid=TXT_TAGHM_migrati…

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OSProcess weirdness
by Jon Hylands 23 Dec '07

23 Dec '07

Hi everyone, (I tried to send this message to David last night, but bounced, so I'm reposting it to the list...) I'm using OSProcess on my gumstix (Linux) to run some external commands like ps, and it fails after the first command. I have tracked down the reason it is failing, and it appears to be a bad lingering dependent for the ThisOSProcessAccessor singleton. I log the following when I start: Starting server... OSProcessAccessor forThisOSProcess: a UnixOSProcessAccessor on pid 2040 ..dependents: #(a WindowsProcess with pid 2040 a UnixProcess with pid 2040) So it looks like the release for dependents isn't working in OSProcessAccessor >> #startUp: I'm using OSProcess version 4.3.3 on Squeak 3.7, doing development on Windows, and copying the image over to the gumstix to start it headless. Any thoughts? Have you seen this before? Later, Jon -------------------------------------------------------------- Jon Hylands Jon(a)huv.com http://www.huv.com/jon Project: Micro Raptor (Small Biped Velociraptor Robot) http://www.huv.com/blog

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What is the proper way to get the Refactoring Browser in 3.9
by Hilaire Fernandes 07 Dec '07

07 Dec '07

I have installed RB and AST from SqueakMap for 3.9, but I have many random problem swith features not working as hierarchy browsing, simple editing in the browser, refactoring tools as renaming methods. These problems happen more or less randomly. Hilaire

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ANN: new Genie release
by Simon Michael 07 Dec '07

07 Dec '07

As penance, and encouraged by Brian, I ended up doing a bunch of work on the Genie package yesterday. Genie is a very cool gesture recognition system by Nathanael Schärli that for years required a bit of setup work and has been largely ignored. I'm pleased to announce that there is now a ready-to-run version of Genie on squeak source. This version includes better Squeak integration, a small dictionary of useful gestures for project navigation and UI control, and most of all, should "just work" after installation. It has been tested with Squeak 3.10 and 3.9 so far. Please give it a try and ask questions if you have any trouble. http://squeaksource.com/genie.html Also note the squeaksource Genie project is now globally-writable, so feel free to make it better. Thanks - Simon

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[ANN] 3.8.2 alpha
by Michael Rueger 05 Dec '07

05 Dec '07

Hi all, the updates for 3.8.2 alpha are now on the server. I would like to move the release to 3.8.2 final next week. Michael

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Squeak on Nintendo ES OS
by karl 04 Dec '07

04 Dec '07

I saw this article on osnews.com http://www.osnews.com/story.php/18986/Nintendos-ES-Operating-System There is even a screenshot of it running Squeak: http://nes.sourceforge.jp/screenshot.html

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Refactorings drop comments
by C. David Shaffer 03 Dec '07

03 Dec '07

This is in RefactoringEngine-dc.39 but has been the case for as long as I can remember. Many of the method refactorings (rename, for example) drop all of the method comments in all affected methods. This is making it a challenge to document my code :-( Does anyone have ideas for a fix? David

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Image recovery?
by Esteban Lorenzano 29 Nov '07

29 Nov '07

Hi all,I have an image that is not working anymore, and I can not take control from that (the image starts, but i can't press any key, not even cmd+.) Is there a way to load the image (as an ImageSegment or something like that) so I can recover the objects I need? Thanks in advance, Esteban -- "Querer es suscitar las paradojas" Camus. El míto de Sísifo.

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Monticello and Squeaksource+Seaside = Load silently the last version of a package ?
by Frederic Pluquet 29 Nov '07

29 Nov '07

Hello, Somebody knows how to load the last version of a package from Squeaksource without using the UI of Monticello, but executing only some lines of Smalltalk code ? The code must do something like (giving a package name) : - Check if a newer version exists on Squeaksource - In this case, load the last version of package in the current image The idea is to load the last version of a seaside application (from Squeaksource) without stopping the server (clicking a button in my seaside application). Fréd -- Frédéric Pluquet Université Libre de Bruxelles (ULB) Assistant

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Re: Problem with different screen resolutions
by Alan Kay 29 Nov '07

29 Nov '07

The OLPC version of Etoys has a zoomable screen (courtesy of Andreas Raab) -- this will probably work straightforwardly in squeak.org Squeak. Cheers, Alan At 09:15 AM 11/29/2007, Alejandro Gonzalez wrote: >I created a project in which I dropped some morphs that now I cannot >see because I'm opening the image in a machine with a screen >resolution that is smaller than the one in which I created the project. >Is there something like a "bird's eye view", "zoom out" or something >that I can use to see parts of the world that are out of my window? >or the only chance I have is to change the screen resolution of the machine? >Thanks >Alejandro >

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