UI Builder for Pharo

Interesting, someone is preparing an UI Builder for Pharo:

http://www.youtube.com/watch?v=CHbc1t83fEI

Next generation of Smalltalkers ... (Part II)

Sorry for not updating the blog ... my time is very limited these days. But I have a good reason. Do you remember my post from October 2007? Hey since 4.50am this morning Elisa now has a little sister. Welcome on eath little Romy!

ESUG Dead line

Noury Bouraqadi announced the ESUG early registration dead-line (13th of july).

Browse the list of talks or browse the nominations for the ESUG award.

Old Squeak News

Once upon a time ... there was a news magazine based around Squeak Smalltalk which was devlivered as a CD-ROM. Maybe you remember the September issue including the declared Squeak "birthday" or the October issue on "Powerful Ideas in the Classroom".



The old sites http://www.squeakonline.com and http://www.squeaknews.com are now obsolete (and the news have a nice replacement with http://news.squeak.org/).

However whats the new thing I want to share here: Tansel made the old issues available for download.

PhidgetLab - connecting Smalltalk with the real world

If you want to access Phidgets from Smalltalk have a look at the PhidgetLab project from HPI. A Phidget is a sensor and actuator that can be connected to a PC via USB and is now easily programmable from within your Smalltalk image.

Pharo MIT license clean

After months the pharo distribution of Squeak is now license clean. See the official announcement on the pharo mailing list. Great, thanks to all who helped.

Internet Ray Tracing Competition and Smalltalk/Seaside

If you are interested in computer generated graphics you may know POVRay (Persistence of Vision Raytracer). It's a a free tool to create high-quality computer generated images and animations using raytracing. This tool has its roots in DKBTrace - a program written by David Buck.

You may know David from the "Simberon Design Minute" on the "Industry Misinterpretation" Podcast series. His original DKBTrace (and even the modern POV-Ray) benefited from some object oriented ideas taken from Smalltalk.

David (who is very active in the Smalltalk community) now announced that he rewrote the Internet Ray Tracing Competition website using Seaside and VisualWorks Smalltalk.

See http://www.irtc.org

Pharo Preview Setup for Windows

Even if the pharo distribution of Squeak is still in the alpha stage I already created a simple setup with the lates dev-image from Damien so pharo is easily consumable by Windows users. It should now be easy to start without having to know where to get the image/changes file, the sources and the latest virtual machine.

I've used NSIS installer for the setup and the nice logos provided by Samuel.
The whole process is described here and here in case anyone wants to build an own custom virtual machine for a distribution or commercial application.

You can download the setup.exe here. Use at your own risk and note that the pharo community has some more bugs to fix ;)



Thanks to all for making this possible - with the pharo distribution Squeak now really has stopped looking toyish. Only 10MB download for a complete world full of Smalltalk :)

Smalltalk TV beta

How cool is that: Smalltalk has an own (commercial?) TV station:

http://www.smalltalktelevision.com

Thanks to Chris Cunnington, expect more to come.

Meteoroid, a MVC framework for the web using Comet

Lautaro Fernández announced the first beta version of Meteoroid, a Comet-based framework running on top of Seaside.

It allows you to create "live" web application in a few steps - you can trigger changes to connected web browsers by using an observer-like mechanism. Each time the model changes, an announcement is triggered and data being pushed from the server to a special div in the browser.

There is
- the project page
- a prepackaged download based on the VisualWorks VM and image
- a screencast how to install the project yourself

Just start the image with the virtual machine executable and start two or more browsers on http://localhost:8080/seaside. Anytime you change (for instance the shared counter application) the other browsers will update. Nice ...

More Charts for Seaside

As I mentioned earlier Udo Schneider has created a Seaside wrapper for OpenFlash Charts.

The code has now moved from

http://www.squeaksource.com/SWFObject.html to
http://www.squeaksource.com/OpenFlashChart.html

and there is an online demo available together with an online demo of SWFObject.

Looks like there will also be a wrapper for jQuery Flot available later today:

Update: here is the link for Flotr

http://www.squeaksource.com/flotr.html

Reserved keyword conflicts

JavaFX - the latest hype on the language market. But not without trouble.

"insert" and "delete" are new JavaFX keywords - so they conflict
when you will try to call a Java method with this name. But there is help - this time use double angle brackets. So yet another thing to remember ...

Thats why Smalltalk is so much better - it is simple and consistent without all these "language workarounds". Your brain is free to care about solving the problem - and not busy remember all language possibilities or busy satisfying the compiler.

And I tell you a secret: Smalltalk is not a language - its a dynamic object system with the language built in...

Browse the code vs. RTFM

There are many reasons to fall in love with the keyword message syntax and dynamic type system of Smalltalk.
One reason is that (depending on appropriate names) you easily understand the intention of a method. If not you can easily find out by browsing the code.

In the non-Smalltalk land you have to spend your time reading api descriptions. And you will find horrible examples like this. Just scroll up and see how many ways there are to set an attribute ;)

Smalltalk in Barcelona

There is a new website on Smalltalk managed by the
Software Dept. of the Technical University of Catalonia

http://smalltalk.cat

It was announced by associate professor Jordi Delgado who
gives courses in Smalltalk and Botsinc.

The site is powered by Pier CMS and language is catalan.

If you havent already you should check out the video on
Alan Kays OOPSLA talk on "The Computer Revolution hasn't happend yet"
which is included in the site.

SeaBreeze for Squeak

Looks like SeaBreeze gets ported to Squeak (which is the initial and main Seaside platform):

http://www.squeaksource.com/SeaBreezePort.html

Pier CMS 1.1

Release 1.1 of Pier is available. Easy to install:

- download
- start the executable VM
- go to http://localhost:8080/seaside/pier

So you have a Smalltalk based CMS within a minute.

Whats new: several fixes and it is now based on the Pharo distribution of Squeak.

If you are interested how Squeak development can look these days then open the browser within the image. It includes the new UI look and OmniBrowser with new icons, eCompletion and syntax highlighting.

BTW: if you are on Windows you have to select "System" -> "Preferences" - "PreferenceBrowser" -> "general" -> "swap mouse buttons" to get the right click menu again since the image was built on Mac.

VAStGoodies

Adriaan van Os announced the VAStGoodies.com website today. It's written in Seaside 2.9 alpha 1 running on VisualAge Smalltalk V8 Beta1.

The application enables browsing, downloading and uploading of Envy Configurations Maps.

Ambrai Smalltalk for Mac

David Buck spoke to Dorin from Ambrai and reports that they have picked up development of Ambrai Smalltalk after a hiatus and are planning a future release.

There will also be a presentation on Ambrai Smalltalk in the spring at the Ottawa Carleton Smalltalk Users Group.

Rounding in different environments

Again, take care when working in multiple environments:

In Excel you get:

ROUND(4,4245;2) -> 4.25 (depending on a preference setting)

in Oracle you get:

select round(4.245, 2) from dual -> 4.25

in VB6 one gets:

Round(4.245, 2) -> 4.24

But you can use:


Function RoundHalfUp(number As Double, scale As Integer) As Double
RoundHalfUp = Int(number * 10 ^ scale+ 0.5) / 10 ^ scale
End Function


In Java you can directly use BigDecimal or the following utility for doubles:


/**
* Rounds the given value half up.
*
* @param value the value to round
* @param scale the scale to use for rounding
* @return a new rounded BigInteger instance
*/
public double roundHalfUp(final double value, final int scale) {
return new BigDecimal(Double.toString(value)).setScale(scale, BigDecimal.ROUND_HALF_UP).doubleValue();
}


In JavaScript the Math.round() has no scale, so again we use simple math:


function roundHalfUp(x, n)
{
var a = Math.pow(10, n);
return (Math.round(x * a, 0) / a);
}


Cloud Computing ... in Smalltalk

Jan van de Sandt announced "Cloudfront AWS" - a new open source project he is developing together with Ernest Micklei. The code provides easy access from Smalltalk to the Amazon Web Services for cloud computing.

It's nice to have Ernest back in Smalltalk - on squeaksource he states: "Smalltalk is coming back, so am I".
I once worked with him as a consultant and enjoy his ideas like Teachable Objects.

For Smalltalk he typically used VisualAge - but I gave him an update on Pharo, Squeak dev tools and Seaside29 in December and it is nice to see that they now choose Squeak as the first platform for their new project and port to other ST dialects later.

Expect to see more interesting things on the new http://blog.doit.st blog, especially since both of them seem so fascinated by Smalltalk that they even commited code to squeaksource on the christmas evening ;)

Squeak, Etoys, Robots and Wiimote

Found a robot kit under the christmas tree? So its time to have a deeper look at Smalltalk - especially Squeak.

Ricardo Moran tells you how to control Lego Nxt robots, control the I-Sobot (world's smallest humanoid robot) or play robot soccer.

There is also an FFI interface to the wiiuse library - this allows to interact with several Nintendo Wii remotes using Squeak and/or Etoys.

Seaside 2.9 Alpha 2

Seaside 2.9 Alpha 2 is out. Additionally to many fixed bugs portability has increased (this time with the focus on VisualAge Smalltalk).

Lukas also pointed out a new tool at http://builder.seaside.st to configure a load script or Monticello configuration.

SE Radio on Smalltalk

Spend some time this evening to listen to some episodes from "Software Engineering Radio". Currently listing to an interview with Dave Thomas with lots of discussion on Smalltalk, Squeak, Lively, Java and Ruby. Interesting ...

Flash Charts for Seaside

Udo Schneider created a wrapper for the OpenFlash Chart project to use it from the Seaside web framework. The project is hosted on SqueakSource.

Coq virtual machine project

Andreas gives an update on the current state of the Coq Virtual machine.

Until now there were only informations on Eliots blog available and its good to get a summary of the overall plan now.

Smoaktalk - Smalltalk interpreter for Flash

Must have missed this in July: Chris Smoak has created a Smalltalk interpreter for Flash using OMeta.

Alien - Smalltalk and the world out there

In the year of Smalltalk things really moving forward, especially within the open source family. A lot of VM work is going on and Pharo may become the most interesting descendant of the Squeak image by breaking with old traditions.

But there is also work going on to provide a better FFI (Foreign Function interface). John and Eliot provide first version on the "Alien" SqueakSource project. From the description:

"Alien is a new FFI interface. It supports faster call sequence, return code setting, and callbacks to execute smalltalk code from the FFI routine. Copyright 2008 Cadence Design Systems, Inc. Licensed under the Apache License, Version 2.0"

A Commodore 64 emulator in Smalltalk

A C64 emulator written in VisualWorks Smalltalk by Gabriel Honoré. Nice! Especially since I started my first programming steps on this machine. Read more here.

So we can write the next Smalltalk UI framework using POKE 8192 + offset, ..., control sound using POKE 54296, 15 and use SYS 64738 to reset our machines ;)

Scaffolding for GemStone

James Foster provides a short video on "Scaffolding for GemStone". It nicely shows how easy it can be to create CRUD web applications with Seaside, Squeak using Gemstone for persistence.

Even Robots understand Smalltalk

The Smalltalk programming language is not only simple but powerful - it is also very close to natural languages.

Thats why also Robots can understand Smalltalk these days. I think you should also start to dive in and learn Smalltalk before robots outperform the human race.

Read more.

seaBreeze 4.0

Karsten announced a new version 4.0 of seaBreeze for Seaside.

In addition they now provide a QuickStart image - just download it and run and you are able to play with the software. Since it is a normal VisualWorks image you can just select "Browse" and "System" in the Launcher to browse the classes and find out how it is done. If you need more help just follow the mailinglist.

Compared to typical VisualWorks UI windowSpec the seaBreeze UI Builder now uses XML as storage format for the layouts. I like the XML integration into the VW Smalltalk IDE - they extended the Refactoring Browser with a new tab to browse the XML nodes. Nice.

It's not yet ported to Squeak/Pharo (the original Seaside platform) ... but at least there is some interest.

Seaside 2.9 Alpha 1

A first release for Seaside 2.9 Alpha 1 is available.

Squeak on the iPhone 1.07

John has updated the iPhone VM to version 1.07.
This new virtual machine uses the latest pharo image.

Smalltalk on the wall

Cobalt (written in Smalltalk) on a 13-foot by 5-foot multi-touch visualization wall, read more here.

I definitely need a larger office ...

Smalltalk in Eclipse

There are some first screenshots from STDT (Smalltalk Development Tooling) in Eclipse - an internal project at IBM.

Can you play with it? I dont think so. From one of the comments by Dan Heidinga:

"Currently, the project is strictly internal. We hope to be presenting at EclipseCon this year and should have a better answer by then."

However, it's nice - but working with a full Smalltalk system is better ;)

Smalltalk Superpowers video from OOPSLA

OOPSLA is running and a first video from Smalltalk superpowers is up. Thanks to Göran.

Crack.NET

If you like tools like the windows utilities from Sysinternals (now at Microsoft) you will surely love tools like Snoop or the new Crack.NET.

SmallFaces, a widget toolkit for Seaside

Hernan, Norberto and Juan announced "SmallFaces (SF) for Seaside". You can now create web applications with Seaside just using widget objects.

Read more here and here.

Silverlight and Eclipse

There is a nice Eclipse UML plugin "eUML2" from a company called Soyatec. When doing Java stuff I use it for various reasons:

- UML is a good way to communicate designs
- it integrates nicely with the editors (changes in code are reflected in model diagrams and vice versa)
- the file format is XML
- refactorings can also be applied in the diagrams
- the graphic is nicely done and visually appealing

I was suprised to hear that Microsoft is now giving funding to them to develop a Silverlight (yes the one from .NET) integration into Eclipse. See:

http://www.eclipse4sl.org/

Until today support for .NET in Eclipse was very comfortless. There was once a simplified C# Editor and there were no real builders and natures to support compilation for .NET languages. Will see how far they integrate, so new things to try out this evening...

Gartner analyst and Smalltalks comeback

Mark Driver, an analyst at Gartner group blogs on Smalltalk. I like this quote:

"You think Rails is cool? Check out seaside."

Hat tip to Randal for the news.

Squeak "multi-vm"

Looks like Sam S. Adams (IBM Research) and David Ungar (known from Self programming language) have constructed a Squeak "multi-vm" a Squeak VM adapted to run on 56 of the 64 cores on the Tilera64 processor family.

Read more here and here.

As Sam noted on the Squeak list they plan to attend the SqueakBOF at OOPSLA and demo the current multicore VM work.

Sounds like Smalltalk

TaalPulse is a free software Lehra, Theka and Tampura machine for the student of Hindustani (northern Indian) music. It is designed to run on portable devices (such as Compaq iPaq) but it also runs on desktop computers (Windows, Linux and MacOS).

TaalPulse is developed by Guillaume Pothier using Squeak Smalltalk. See

http://taalpulse.net/

for more information.

FreeCAD/Croquet update

Phua Khai Fong gave an update on the state of his FreeCAD/Croquet project for GSOC 2008.
There is also a website available:

http://www.oopgames.com/freecad/

WAX - Writing API for XML

The writing API for XML (for Java and Ruby) is now also available for Smalltalk from the author R. Mark Volkmann.

see http://www.squeaksource.com/WAX.html

Sophie news

Looks like the open source Sophie project (developed in Squeak) gets no funding anymore and should be redeveloped in Java by a new company.

Meanwhile this is also discussed on slashdot.

Sad - but the original developers try to keep the project alive and moved to
http://opensophie.org.

How to get a SOA

See how easy it is to get a SOA architecture: "It's a SOA" (LOFL)

Exciting News for Dolphin Smalltalk Users

Through a cooperation between ObjectArts and Lesser Software the next generation Dolphin Smalltalk generation will increase speed, support multi-threading, Unicode, SLL's, ...

Read more here.

Backward- and forward- compatibility

Some things would never be a problem if people would use more dynamic systems where you just file-in the required code.

Pier 1.0.17

Tudor Girba announced the new version 1.0.17 of the Pier CMS system today. Pier is built on top of Squeak and Seaside, and thus it runs on all major operating systems. You can download the release from:

http://www.piercms.com

Faster JavaScript

So as I blogged earlier the race on JavaScript just started: after the release of Googles V8 we now also have SquirrelFish Extreme.

SqueakSVN - Squeak and Subversion

The Software Architecture Group from the HPI in Potsdam announced a Subversion integration project called SqueakSVN for Squeak Smalltalk.

The project site provides more information, a demo video and the source.

Squeakland website

The Squeakland Website (http://squeakland.org) got a new look. Nice design.

Squeak on the iPhone

John M. McIntosh and Michael Rueger announced the availability of iSqueak - a squeak virtual machine port for the iPhone/Touch.



They won the 3rd price (together with Grit Schuster) on his years ESUG Innovation award (read the ESUG paper here).

Visit the http://isqueak.org project site and the announcement for more information. According to SqueakNews John is also wants to offer support.

James Robertson made a video available through Youtube:

Glassfish server adapter part 2

The glassfish server adapter for Eclipse (see my last post on this) now has the (so far missing feature) to set the domain dir. It's available in version 1.0.8. Thanks Mr. Raccah

September Smalltalk in Munich

Today we have our next Smalltalk meeting here in munich. We start 7pm in the VSA building, Englschalkinger Straße 150 (subway station Arabellapark).

VSA is building health care systems using VisualAge Smalltalk. There will also be a presentation from Joachim Tuchel on VisualAge. I met him coincidentally this morning at the central railway station.

The event is open so feel free to come by if you are interested in Smalltalk. Thanks to Steffen Müller for all the coordination work.

Boot Smalltalk

There is some more info on the web on Squeak Smalltalk booting on the OLPC with the SqueakNOS (No operating system) project:

• Gerardo provided a VMWare image to boot squeak and has some tips how to prepare any Squeak smalltalk image to work without an operating system (you can download the VMWare applicance from here)
  
• James made a video from ESUG 2008 available:
  

CodeCity

I reported earlier on a port of Mondrian to Squeak Smalltalk allowing you to visualize and analyze your object oriented system.
Maybe you also know the CodeCrawler tool from VisualWorks.

Meanwhile there is a new tool available called "CodeCity" presented at ESUG 2008. It visualizes the code in 3D which is very cool. It's written in Cincom Smalltalk. A paper is available here and the projects page here.

James' blog also has some infos and a nice video. Thanks for making this available!

Google Chrome, JavaScript and Smalltalk

The secret is out since yesterday: Google has released Google Chrome - a new webbrowser. It's easy to install - and from a first impression also very fast. But that's not the exciting news - at least not for us Smalltalkers.

The most interesting part is a new implementation for the JavaScript Engine called "V8" done by members of the orginal Animorphic team. Animorphic Smalltalk was a Smalltalk system built around the mid-90s as part of a startup that was informally known as Animorphic Systems. In early 1997, Animorphic was acquired by Sun, and much of the underlying VM technology was put to real use in the Java Hotspot VM.

Animorphic Smalltalk included a high performance VM, a blue-book compatible library, novel browsers and flyweight glyph-based GUI framework, optional type system, mirror based reflection and mixins. It was later released into Open Source.

Lars Bak is now responsible for V8 at Google (he was technical lead for Strongtalk Smalltalk VM and the Java HotSpot VM. I already posted about his early work on OOVM and expected something like this - especially after I havent heard anything from him since 2004 after Esmertec acquired OOVM.

Another interesting aspect of the V8 virtual machine is that it's open source. Just use

svn checkout http://v8.googlecode.com/svn/trunk/ v8-read-only"

to checkout the project (13,6 MB). It is mainly written in C++, based on the Strongtalk Smalltalk code and released with a BSD/MIT license. It uses some neat design tricks like dynamically created hidden classes (as you can read on the Design doc page)

Dave Griswold has posted some more information on the Strongtalk list and on the Squeak list.

While Daren is trying to run first benchmarks I gave Dan's lively kernel a try. Lively Kernel is desktop kernel written in JavaScript by Dan Ingalls (of Smalltalk fame) while working at Sun. Right jump into the kernel page with the chrome browser. It's really fast compared to JavaScript engines I tried before.

So JavaScript is hotting up and more interesting work is in the pipe. Maybe you remember Ian's work on open extensible object systems at Viewpoint research institute. With just 400 lines of code and no serious attempt on optimization he was able to implement a JavaScript version that was faster than WebKit/Safari and Firefox...

Regarding performance and running Smalltalk David Griswold explains:
"I'm sure that these sorts of things can be worked around, but they do mean
that V8 will never in its pure form quite reach the pinnacle of theoretical
performance possible for a VM targeted specifically to Smalltalk etc. So it
won't be as fast as Strongtalk, although it may get fairly close to
VisualWorks performance."

"Remember it will still be a lot easier to run other dynamic languages on JavaScript than it is to run them on Java, since at least JavaScript is fully dynamic, unlike
Java."

"The release of the V8 VM is the beginning of a whole new era for
dynamic languages (Smalltalk, Ruby, Python, etc).

Let the flood of fast new dynamic language implementations begin!"

I'm eager what the answer of Microsoft will be (especially since my friend David Simmons (Smallscript/S#) is working on scripting languages there) and if .NET and Suns JVM will be more friendly to dynamic languages in the future. Interesting times ...

SeaBreeze for Seaside

SeaBreeze is a helper tool to setup and maintain applications for Seaside.

Congratulations to the team at Georg Heeg eK for the second price in ESUG innovation award.

At seabreeze.heeg.de Roland Wagner explains it all. I once worked with him in Frankfurt - nice to see what he is working on these days. Click the images to enlarge:



Magnus Schwarz also announced the tool on the seaside list. The source code will soon be available with MIT license.

Glassfish Server adapter

Back in January I reported a bug/missing feature the Glassfish server adapter for Eclipse. The asadmin tool allows you to easily create domains for the server. In a typical setup I separate the domain dir (configuration) from the glassfish installation directory.

While the plugin allows you to set the used domain it is not possible to select the directory where the domain is installed. It expects the domain in the usual subdirectory of the Glassfish/SJSAS installation.

Looks like work Rochelle Raccah from Sun now started working on it today.

SqueakNOS boots on OLPC

More news from ESUG 2008: The Squeak NOS project now boots on the OLPC computer. Read more here (french). A video of the boot process is available here and some comments/code here.

Coq - virtual machine project at ESUG 2008

Coq a television advertisement for the Honda Accord inspired Eliot Miranda for the name and logo for his "faster open source VM's" project.

See Video1 and Video2.

First ESUG 08 impressions (on the web)

ESUG has started - unfortunately I had no time for the short trip to the Netherlands.
But there is also enough information on the web to stay informed like the Weekly Squeak report on the CampSmalltalk and the first unsorted slides from the presentations.

Seaside 2.8.3

Hey, there is a new maintenance release (2.8.3) for Seaside!

SqueakNOS new changes

The Squeak NOS project has some new changes from Gerardo Richarte. Before that the project was last updated in 2006 (after 5 years of official inactivity) - the SqueakNOS mailing list had it's last postings in November 2006.

But it looks like the project is now maintained again. The new version also includes the beginning of USB UHCI specification implementation for USB devices. Let's see how the story continues ...



"An operating system is a collection of things that don't fit into a language. There shouldn't be one." - Daniel H. H. Ingalls; Design Principles Behind Smalltalk; Byte Magazine, August 1981.

Squeak on hand held web computer

Sven Schott installed Squeak on the Pepper Pad 3 (a handheld web computer). As he said:

"It's quite nice having a touchpad with Squeak."

Read more ...

Monticello 2.0 for Squeak

Colin has announced a first release of Monticello 2.0, the versioning tool for Squeak Smalltalk:

Read his first posting for version 2.0.17. Meanwhile it's upgraded to
version 2.0.20

Club Smalltalk

A new website around Smalltalk:

http://www.clubsmalltalk.org

GNU Smalltalk 3.0c

GNU Smalltalk 3.0c is available. Read more at:

http://smalltalk.gnu.org/news/gnu-smalltalk-3-0c

Modulo differences

Should take more care when using modulo and negative numbers.
Did'nt expect a difference at first:

Excel	=MOD(-1; 12) -> 11
Smalltalk (Squeak)	-1 \\ 12 -> 11

---

Java	-1 % 12 -> -1
VisualBasic	-1 Mod 12 -> -1
(PL)SQL	select mod(-1, 12) from dual -> -1
JavaScript	alert(-1%12); -> -1

Get Insight

Try http://google.com/insights/search/# with various search terms like

Smalltalk, Java, Squeak, Oracle, Eclipse, Ruby on Rails, C#, EBay, ...

Interesting ...

Style with Smalltalk

We already had "Smalltalk with Style" (maybe you know the book).

But we now also have "Style with Smalltalk" - a project called "Phantasia" as an add on for Seaside. If you want you can also use Smalltalk (instead of CSS) to style your web pages. Read more here.

Potato VM blog

There is a new blog accompanying the Potato project (i.e., the JSqueak offspring):

http://potatovm.blogspot.com

Exupery 0.14

Bryce Kampjes has released Exupery 0.14. . Read more on the newest stuff in the native code compiler for Squeak.

It's available on SqueakMap and on SqueakSource.

Closures

Some news from Elliot about his work on a new Closure scheme for Squeak/Croquet.

He also made the first bootstrap code available at: http://www.mirandabanda.org/files/Cog/Closures0808/Bootstrap/

Squeak in education

Found a new project called iStoa.net developed for education in Squeak Smalltalk.
It is a learning environment with emphasis on interactive activities through
artifacts, recording of student activities for further analysis, curriculum
modeling with oriented graphs and learner modeling.

Looks like the client application is also running on the OLPC XO notebook.



Code is available at:

1. http://www.squeaksource.com/iStoaCore.html


2. http://www.squeaksource.com/iStoaExo.html


3. http://www.squeaksource.com/iStoaWeb.html


4. http://www.squeaksource.com/iStoaArtifact.html


5. http://www.squeaksource.com/iStoaEtayage.html

Squeak in education

Found a new project called iStoa.net developed for education in Squeak Smalltalk.
It is a learning environment with emphasis on interactive activities through
artifacts, recording of student activities for further analysis, curriculum
modeling with oriented graphs and learner modeling.

Looks like the client application is also running on the OLPC XO notebook.



Code is available at:

1. http://www.squeaksource.com/iStoaCore.html


2. http://www.squeaksource.com/iStoaExo.html


3. http://www.squeaksource.com/iStoaWeb.html


4. http://www.squeaksource.com/iStoaArtifact.html


5. http://www.squeaksource.com/iStoaEtayage.html

Squeak in education

Found a new project called iStoa.net developed for education in Squeak Smalltalk.
It is a learning environment with emphasis on interactive activities through
artifacts, recording of student activities for further analysis, curriculum
modeling with oriented graphs and learner modeling.

Looks like the client application is also running on the OLPC XO notebook.



Code is available at:

1. http://www.squeaksource.com/iStoaCore.html


2. http://www.squeaksource.com/iStoaExo.html


3. http://www.squeaksource.com/iStoaWeb.html


4. http://www.squeaksource.com/iStoaArtifact.html


5. http://www.squeaksource.com/iStoaEtayage.html

Squeak and Namespaces

The Squeak community had many discussions in the past on Namespaces within the standard image. Especially after other Smalltalks like VisualWorks provide Namespace by default.
The easy way is to have conventions so the names just don't overlap.

There have been proposals like the one from Göran (and working implementations) for namespace support.

One idea is to reify the prefixes so you could write My::Class instead of MyClass.
Smalltalk/MT uses the same notation. However, no proposal for Squeak has been adopted yet.

Michael van der Gulik has now released a premade Namespaced image. This is part of his SecureSqueak project.

There is also a video available.

WxSqueak 0.5.1 demo

A new 0.5.1 demo version of WxSqueak is available. Read the announcement or check out the updated project page:

http://wxsqueak.org/

Domino simulation

Willi Griephan of Bremen shows the operation of two Croquet simulation spaces that he created using the Croquet SDK.



Read more here (german) or the summary from Julian Lombardi.

Reminds me on the Smallscript3D library from Ernest Micklei (Philemonworks.com) who did a World Record of 4.7 million 'Virtual' Dominos using (VisualAge) Smalltalk. Ernest's page has changed, but the wayback machine shows some details.

Potato aka JSqueak

Looks like the HPI has created an extended version of JSqueak (Squeak VM implemented in Java to run on JVM) called "Potato".



Read more here.

JavaScript and Smalltalk Diff

Tony Garnock-Jones implemented a Hunt-McIlroy diff and a diff3 implementation in JavaScript and Squeak.

He blogged about it here and here.

The source is available at http://www.squeaksource.com/DiffMerge.html

Squeak demo on iTouch

Looks like Squeak is running on iTouch systems. Found on #DNU.

Show Smalltalk

Looks like we should continue to show the ease of development in Smalltalk IDE's so more people like Piers Cawley will find their way to Smalltalk.

Pharo - a new implementation of Smalltalk based on Squeak

The Pharo project wants to take a fresh look at the Smalltalk philosophy and current implementations. It wants to produce a clean and lean open-source Smalltalk.
It will start from Squeak but pharo is a fork. An important test for pharo is that Seaside should run on it.



Project site: http://pharo.gforge.inria.fr/
Mailing list: http://lists.gforge.inria.fr/pipermail/pharo-project/
Source: http://www.squeaksource.com/Pharo/
Inbox:  http://www.squeaksource.com/PharoInbox/

As far as I know the project is named after the famous lighthouse of Alexandria, but this was called "Pharos" not "Pharo". Time for a bug report?

LifePipe for Seaside2.9

Looks like Lukas is working on wrapping the LifePipe UI library for Seaside 2.9.

The LifePipe UI is a set of MIT licensed widgets and controls. The library is based on the Prototype JavaScript library. Interesting...

JSqueak

Dan released the first official version of JSqueak - a simple Squeak interpreter implemented in Java.

This may also open the door to other platforms like Android (based on the Dalvik VM, but programmable in Java)...

Better VMs - Part 2

As I reported earlier Eliot is now working on better Squeak/Croquet virtual machines. Some more news are now available from his blog and it looks like code will follow soon.

Go Eliot!

Smalltalk Evening in Munich

Unfortunately my time is very limited these days so I was not able to write much about the last Smalltalker meeting here in Munich. It was an interesting evening.
Georgios German presented the Traffic management Software developed at GEVAS which is implemented in VisualWorks. Very interesting application with lots of knowledge built in.

After that I presented an online application which I developed to demo Seaside and show some of the Seaside features. Maybe more on this later on this blog.


Short info on the next Smalltalk "Stammtisch" meeting in Munich on 26.6.2008:

Same place: GEVAS Software (Systementwicklung und Verkehrsinformatik GmbH) Nymphenburger Straße 14/Sandstr. 26.

The meeting starts 7.30pm, please use the side entrance of the building
Sandstr. 26 (5th floor)

Steffen Müller and Marco Leberfing would like to present and talk about "QueryVision" - a Seaside Application developed in Dolphin Smalltalk.

Unfortuntately I'm not able to attend the meeting - but I got a preview of the software so I'm sure it will become an interesting evening again...

Food for thought

More and more Java add on vendors stop their business. Looks like it is not a viable business model anymore to sell tools or software in general. Read the story of Enerjy plugin for Java (a static code analysis tool) for yet another example. Some shops close down, others switch to becoming service providers.

Also the Java community get more and more fragmented. People start looking for alternatives like dynamic systems.

Especially after more and more people lamenting on new language extensions and the growing complexity of Java (even people from Sun). Others already announce that Java as dead.

I think computer science should start to learn from past experiences (instead of reinventing the wheel) and try to decrease complexity using minimalistic concepts.
Have a look at Smalltalk to see how powerfull systems can be just by having dynamic systems based on two simple things: objects and messages.

A very interesting talk in this regard is Ian's presentation from the workshop on self-sustaining Systems (S3). Food for thought ...

Better Squeak VMs

After checking my LinkedIn contacts I noticed that Eliot Miranda
is now Analyst/Programmer at Qwaq Inc. Some of you may know Eliot
from his work on the VisualWorks Smalltalk virtual machine.

It's interesting to see that he is working there since Qwaq Inc.
builds online virtual worlds based on Squeak and Croquet.

Maybe the Squeak Smalltalk system gets future improvements on
the virtual machine side if some of the development is contributed back
from the company to the Squeak community (as it was the case for the Hydra multi-core Squeak VM).

Interesting changes in the year of Smalltalk...

HPDF - Haru Binding for Squeak

I played with HARU last weekend. It's a free, cross platform, open-sourced software library for generating PDF. So why not use it from Smalltalk to generate PDF's:

I created a Squeak binding to it using FFI. Read more here.

The Squeaksource project can be found at http://www.squeaksource.com/HPDF.html

S3 workshop in Potsdam

On SqueakNews you will find a short report on workshop on Self-Sustaining Systems (S3) in Potsdam.

Ian presented COLA, Dan presented Lively and there were also some demos on Huemul Smalltalk, Pico and SPy.

The first videos are available on http://www.tele-task.de

OmniBrowser in SeasideXUL

Pavel continues his work on XUL for Seaside. He now has the OmniBrowser framework running...

Google Chart API for Seaside

Seaside has more and more additional projects like SeaChart. The project now also includes examples for using the GoogleChart API. Click on the image for a few examples:

JavaConnect := Java asSmalltalkValue

Nice project: JavaConnect is a Visualworks Smalltalk library that allows a seamless interaction between Smalltalk and Java. A Smalltalk application can access any Java object and send messages to it, just as if it were a Smalltalk object.

Read more at the JavaConnect project page:



Would be interesting to know how this relates to Joachim Geidels JNIPort project.

Smalltalk Evening in Munich

Today we have our next Smalltalk Evening here in Munich. Its hosted at:

Systementwicklung und Verkehrsinformatik GmbH
Nymphenburger Straße 14/Sandstr. 26

Please use the side entry Sandstr. 26 (5th floor), we start at 7.30pm

Two main topics:
- VW-Software at Gevas
- Squeak

Maybe we find the time to talk about Seaside too.

Seaside and SVG

The SVG project for Seaside is moving forward. It now also includes an example for rendering charts and a Mondrian graph. Meanwhile also the Mootools for Seaside got ported from VW to Squeak.

Here is a screenshot (click to enlarge):

Krestianstvo

"Krestianstvo" - a framework to design Tweak UI's for Croquet applications in plain XML and CSS files. It includes one example of using XUL in Croquet. The project is hosted on Squeaksource.