This announces the availability for discussion of
Scheme Request for Implementation 98
“An interface to access environment variables.”
by Taro Minowa(Higepon).
Its draft and an archive of the ongoing discussion is available at
(via Usenet)
Tag: Language
S24 FORTHdrive
This article led me to IntellaSys, which offers this tiny little 24-core CPU that runs Forth code!
colorForth
colorForth is a redesign of [Forth] for the 21st century. It also draws upon a 20-year evolution of minimal instruction-set microprocessors. Now implemented on modern PCs, it runs stand-alone without an operating system. Applications are recompiled from source with a simple optimizing compiler.
It is the child of Chuck Moore, the creator of Forth.
Soft real-time Scheme implementations
Check out this list of soft real-time Scheme implementations!
ypsilon
ypsilon is the implementation of Scheme Programming Language, which conforms to the latest standard R6RS. It achieves a remarkably short GC pause time and the best performance in parallel execution as it implements “mostly concurrent garbage collection”, which is optimized for the multi-core CPU system.
If you are wondering “Why yet another Scheme implementation” you can find the answer here. To sum it up: they require real-time processing speed and can not use Boehm Garbage Collector because they run on arcade consoles or pinball machines, so, they had to start from scratch.
Addendum: 8/2/8
Ypsilon 0.9.6 is the bug fix release. It fixes all bugs reported and found in version 0.9.5. Ypsilon 0.9.6 has passed all 8886 tests in PLT R6RS test suite revision 11016.
(via C.L.S.)
A presentation about Fluxus
Programming the Sony AIBO in Scheme
This post on the PLT discussion list shares some research into programming the Sony AIBO with Scheme, with this followup post providing additional details on a Scheme interpreter (STk) that provides a foreign function interface for the Sony AIBO C++ API.
Perhaps one day those STk libraries will be ported to PLT!
STk
STk is a free R4RS Scheme interpreter which can access the Tk graphical package. Concretely, it can be seen as the standard Tk package where Tcl has been replaced by a Scheme interpreter. STk embeds also an efficient CLOS like object oriented system, called STklos, which provides:
- multiple inheritance
- generic functions
- multi-methods
- a MOP (Meta Object Protocol)
A history of macro systems
This is a great post explaining the history of macro systems.
Scheme Boston
Scheme Boston is a group of Scheme users who are located in and around Boston, Massachusetts. The group meets monthly, more or less, and usually on the third Wednesday of the month.