20 September, 2011
Years ago Google started the developing of V8, a super Just in time compiler for its Chrome Browser.
return “Nevermind, I am a function, now”;
The code above builds a very generic object, and add to it properties (which could be a function).
Worst, you get very strange things, evaluting:
I like dynamic languages like Self, but this is somewhat too…flexible
21 June, 2008
JSqueak (formerly known as Potato) is less than 5000 lines of code, available under the MIT licence. It runs the Mini2.1 image, which is included for convenience. This image contains a complete Smalltalk development environment, including:
- Rich text and Text editor
- File browser (no file access in VM yet)
- Code browser
- Decompiler (plus temp-name hints)
- Source Code Debugger
Dan wrote JSqueak to teach himself NetBeans and Java in the fall of 2006. Although he developed it as a throw-away project, he notes that
it has features that recommend it for further useful service:
- It is simple
- Uses Java objects and storage management
- Uses Java Integers for SmallIntegers
- It is general
- A weak(*) object table enables enumeration and mutation
- It is efficient
- Includes a method cache and an at-cache (**)
- Also a cache of common SmallIntegers
(*) – This does not mean wimpy — it’s a good sturdy object table — it just doesn’t hold onto garbage.
(**) – This is not an automated teller machine, but a device that speeds up array and stream access.
These properties make it a reasonable base for teaching about VM design.
Dan adds that a number of things should be finished or improved if this VM is to see further use – it currently runs between 10 and 30 times slower than the C-based VM! If you wish to track or contribute to such projects, he invites you to add yourself to the (brand new!) JSqueak Interest mailing list.
You can find out more, and run the application as a WebStart Java Application at the JSqueak home page.
29 May, 2008
Randal L. Schwartz writes that:
“Dan Ingalls graciously granted me a 90-minute interview for my FLOSS “Weekly”
show. We talked about the early days at Xerox PARC, the birth of Squeak,
and the Lively Kernel.”
Dan Ingalls has been the principal architect of five generations of Smalltalk environments. He designed the byte-coded virtual machine that made Smalltalk practical in 1976. He also invented BitBlt, the general-purpose graphical operation that underlies most bitmap graphics systems today, as well as pop-up menus. He has received the ACM Grace Hopper Award for Outstanding Young Scientist, and the ACM Software Systems Award.
Dan’s major contributions to the Squeak system include the original concept of a Smalltalk written in itself and made portable and efficient by a Smalltalk-to-C translator. He also designed the generalizations of BitBlt to arbitrary color depth, with built-in scaling, rotation, and anti-aliasing. He worked with John Maloney to produce much of Squeak’s Morphic and MVC frameworks, as well as its audio support. Dan is currently a member of the Squeak Board.
You can listen to the interview online or download it at http://twit.tv/floss29.
[Pop-Quiz: In which language is Dan more comfortable: C++ or Visual Basic?]
14 March, 2008
Dan Ingalls gave an interesting Tech Talk on the Lively kernel (best viewed in Safari 3 apparently) at Google a few weeks ago – what better way to (re)introduce our new board member?
9 March, 2008
Hi all Squeakers!
Ok, the Squeak Foundation Board Election 2008 ended 19 minutes ago –
promptly at 18.00 UTC, 8 March.
For this year we had 437 authorized voters of which 178 voted, that is
slightly more than 40% voting – a bit disappointing IMHO since we had
157 voting of 347 last year which gives above 45%.
On the other hand 178 is more than 157, so we had more voters and thus a
growing community, which of course is the most important aspect!
And without further ado I bring you the board for the following year
starting from NOW. The order reflects the ranking from the election:
1. Dan Ingalls
2. Craig Latta
3. Bert Freudenberg
4. Yoshiki Ohshima
5. Tim Rowledge
6. Randal L. Schwartz
7. Igor Stasenko
12 January, 2008
18 December, 2007
From Hernan Wilkinson:
I just wanted to let you know that the Smalltalks 2007 presentations are available at https://www.dc.uba.ar/events/smalltalks/2007/presentaciones
Most of them are in English although not all.
You can look some pictures at http://picasaweb.google.com/smalltalks2007 and http://picasaweb.google.com/WeybridgeWay/1erCongresoArgentinoDeSmalltalk
I wanted to give a public “Thanks” to ESUG for their support (DVD, book, ideas, etc), Viewpoints, Dan Ingalls, James Robertson, John Sarkela and Bruce Badger for the videos. Stef and Noury sent me something to read but finally I did not have the time to do it (sorry). Also, to all the sponsors that helped us with the conference.
Below are some comments we got in the Argentine Smalltalk lists (first in Spanish and then in English, translated by Andres Valloud).
It is very hard for me to find the right words to express how happy we are with the outcome of the conference, not only for the amount of people that came but also for their kindness and technical level of the presentations. Thanks to all.