Squeak-dev June 2006

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149 participants
250 discussions

more than 15 arguments
by nicolas cellier 28 Jun '06

28 Jun '06

I added a note and published my workaround on http://bugs.impara.de/view.php?id=2918 This is usefull to pass more than 15 arguments especially to ExternalLibrary calls...

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[Last Reminder] Submit your software to the ESUG Awards
by Noury Bouraqadi 27 Jun '06

27 Jun '06

2006/5/11, Noury Bouraqadi <bouraqadi(a)ensm-douai.fr>: > 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 ARMINES - 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: a Free Smalltalk http://www.squeak.org ------------------------------------------------------------------

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Mock Objects
by Torsten Bergmann 27 Jun '06

27 Jun '06

Hi Chad,>I find I am using mocks as a type of scaffolding which helps me >explore the behaviors I'll need to implement in the classes I'm >mocking. Once I acually create the real class (or a mock class of the >real class), I'll likely replace my on-the-fly mocks with them.Would be a >nice experiment to teach an object and to see howmuch of the teached >behavior could be used to generate/create the mock class automatically. >Think of an "auto-implementation" framework where you tell the objects how >to react in different situtions and smalltalk implementsitself. This is at >least possible for simple stuff: anObject whenSend: #foo: >withArgument: 1 respondWith: true >inAnyOtherCaseRespondWith: false.may result in semi-autoimplemented code: >foo: anObject ^anObject = 1 ifTrue: [true] ifFalse: >[false]So you can write simple scenarios in plain Smalltalk and get helpfor >the implementation phase. One general problem you may run into if you use >mocks is thatthe tested code may check for the class of an object. >Sometimes codelooks like this: "anObject class == Number ifTrue: >[doSomething]"There is a Smallint rule finding "such code" smells. Better >code uses "anObject isNumber ifTrue: [doSomething]"But it is also not >wise to have thousands of "isClassName" methods,so typically "anObject >isKindOf: " or "anObject isMemberOf:" is used.If we really want to create >an identical mock object we need something like: |foo| foo := Teachable >new. foo whenSend: #class return: Object. foo class inspectSince #class >is already implemented in Object the DNU trick will not work.We could >implement the following method in Teachable on the instance side:class | >learning | Transcript show: 'called'. learning := self learnings at: >#class ifAbsent:[]. ^learning class == Association ifTrue: >[learning value] ifFalse: [super class]Unfortunately Squeak >optimizes the call to #class into a special bytecode(16rC7 which is >bytecodePrimClass) - so our own class method never gets called. Therefore >"foo class inspect" will still return the Teachable class! If you step >through the code in the Debugger using "foo halt class inspect" the call to >#class it is not optimized and works as expected.Unfortunately solving this >problem means changing the Compiler to prevent the #class optimization on >Teachable instances...ByeTorsten

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REMINDER: Squeak Chat Wednesday June 28th 20:00 GMT
by Ken Causey 27 Jun '06

27 Jun '06

Just a reminder that the next Squeak Chat will take place between 20:00 (8 PM) GMT Wednesday June 28th and 00:00 (Midnight) GMT Thursday June 29th, 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 00:00 (12:00 AM) GMT Monday July 03, 2006 04:00 (04:00 AM) GMT Friday July 07, 2006 08:00 (08:00 AM) GMT Tuesday July 11, 2006 12:00 (12:00 PM) GMT Saturday July 15, 2006 16:00 (04:00 PM) GMT Wednesday July 19, 2006 20:00 (08:00 PM) GMT Sunday July 23, 2006 00:00 (12:00 AM) GMT Friday July 28, 2006

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Squackers 5 July 2006: RSVP
by Gerardo Richarte 27 Jun '06

27 Jun '06

Juad said: > I wasn't aware Pacific time is -0700. I thought it was -0800. A bit > easier for me then. Hey, it's a little bit late, but wtf! lets get together and do the .ar branch of Squackers! lets talk on the side. Others interested send personal emails, lets see if it can be done. I'm personally not sure, but lets explore the possibilities. gera

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explicit return from a block
by Viktor Svub 27 Jun '06

27 Jun '06

Is there any way to explicitly return from a BlockContext/BlockClosure (like ^some-expression in methods) but without returning from the parent context (method)? I'm beginning to figure out how to avoid the need for "break&continue" in loops, and i know that i can even avoid the need for explicit return converting the block in question in a method, but there are places where a long block is much more convenient... thanks vsv

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Swiki guidance?
by astares＠gmx.de 27 Jun '06

27 Jun '06

Hi Dan, >then subvert it to the real purpose I have in mind. So the answer should depend on the purpose you have in mind... >Suggest which Squeak release would the best combination of being >relatively up to date, and yet having the least bit rot >(if there is any) in the server code. For SWIKI a good place to start may be the Comanche Swiki (current release is called "OneOfTheseDays"). The code + instructions how to set up an own swiki is available from: http://minnow.cc.gatech.edu/swiki/39 If you just want to use the swiki without digging in code you can use the predefined images from: http://minnow.cc.gatech.edu/swiki/15 Swiki runs on Squeak3.6#5429. Havent tried it in anything newer. Dont know about the quality of the code - at least it runs very stable. For any other kind of HTML based web application I would recommend SEASIDE. 3.8 is a safe place for it - but I also use 3.9 already with Seaside and Kom Http Server. You may want to use FastSocketStream with 3.8, it's already built in into 3.9. -------------------------------------------------------------- Here is a short guide on how to start with SEASIDE: 1. Get Squeak (here I use 3.9b#7035) 2. Load a webserver using SqueakMap package loader - load "Dynamic Bindings 1.2" - load "KomServices 1.1.2" - load "KomHttpServer 7.0.3" 3. Open Monticello Browse and add the following HTTP repository: MCHttpRepository location: 'http://www.squeaksource.com/Seaside' user: '' password: '' 4. Open the repository and load the latest MCZ from Seaside2.6a3 (which is currently Seaside2.6a3-pmm.71.mcz) You can also download the file using a browser and install via file list (http://www.squeaksource.com/Seaside/Seaside2.6a3-pmm.71.mcz) 5. create a class "Foo" as a subclass of WAComponent 6. Implement the rendering method on the instance side: renderContentOn: html html text: Time now asString 7. Registering the component as a webserver context root Foo registerAsApplication: 'bar' 8. Start the webserver on a local port WAKom startOn: 9092 9. Point your browser to http://localhost:9092/seaside/bar Note that most WAComponent subclasses now use the new canvas rendering API by returning WARenderCanvas in the #rendererClass method. Have a look at the store demo http://localhost:9092/seaside/store. It starts in class WAStore. You can administrate seaside using the webbrowser: http://localhost:9092/seaside/config Visit http://www.seaside.st to get some more informations. http://www.seasidehosting.st now offers free seaside hosting - you can upload and run images. Some seaside applications/examples: http://offerte.prolife.ch (Insurance app developed by www.netstyle.ch) http://www.dabbledb.com (Avi Bryants startup, implemented using Seaside http://scriptaculous.seasidehosting.st (Seaside+AJAX examples) http://seachart.seasidehosting.st http://http://shorecomponents.seaside.st ----------------------------------------------------------------------- There is also a Swiki implementation based on Seaside. Called SmallWiki2 and now renamed to "Pier". See http://smallwiki.unibe.ch/smallwiki/pier This one is used for http://www.squeak.org. If you want a more lightweight framework for HTML generation have a look at "HttpView" package from Göran. It's used for SqueakMap (http://map.squeakfoundation.org). >(If it isn't obvious from (1)) Hum a few bars about how you can >run the server on the same machine as you use it from That's no problem with two images. For instance I run a local SqueakSource server which hosts all my code. I prepared a predefined image which is accessible from: http://astares.blogspot.com/2005/12/squeaksource-server-image.html So I can start up a (client) development image and connect to this local SqueakSource using Monticello HTTP repositories and the webbrowser. Never tried to run server and clients in the same image. Bye Torsten -- Echte DSL-Flatrate dauerhaft für 0,- Euro*! "Feel free" mit GMX DSL! http://www.gmx.net/de/go/dsl

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Congrats to Dabble DB raising ~$2M
by Brad Fuller 27 Jun '06

27 Jun '06

Great to hear that Dabble DB has raised some $. This is great news for Squeak and Seaside (I assume you are running Squeak, correct me if I'm wrong.) I hope that this gives a significant push to Squeak/Seaside in the press. Blog from GigaOM (http://gigaom.com/feed/) Dabble DB, a Vancouver-based online database / hosted application creation company has raised around $2 million dollars in Series A venture funding from Ventures West, a Canadian VC fund. Paul Kedrosky, a venture partner with the fund, is leading the investment in the eighteen-month-old company. The company will also come out of “beta” tomorrow. “I think it is a great platform for building data centric apps,” says Kedrosky. His logic - Dabble DB is selling “picks and shovels” in this Web 2.0 boom. They have already garnered quite a few paying customers, and perhaps this new round of financing will help them scale their operations. Dabble DB falls under the same category as say a Ning: companies that help build on-the-fly web apps. The company was started by Avi Bryant and Andrew Catton, both first time entrepreneurs. DabbleDB has received some good reviews. I plan to spend some time looking at Dabble DB later. I might be wrong, but my guess is that these kind of offerings could have a similar impact on online-app creation as Visual Basic Studio did for the Microsoft and its ecosystem. (Guys, correct me if I am off base!) -- brad sonaural

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need the OSProcess package and related packages/plugins, minnow down
by Craig Latta 26 Jun '06

26 Jun '06

Hi-- I need the OSProcess package and related packages and plugins. I'd like to try them out on MacOSX. Minnow is down and I can't find any of the releases squirreled away at archive.org. Is there any other way to get them? thanks, -C -- Craig Latta http://netjam.org/resume

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SequenceableCollection>>, wrong comment
by Damien Cassou 26 Jun '06

26 Jun '06

http://bugs.impara.de/view.php?id=3887

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