PLNews: Programming Language News

PLT Scheme v370 has been released. PLT Scheme is a family of Scheme implementations, including DrScheme and MzScheme.

This release includes: the replacement of the conservative garbage collector with a precise garbage collector, library changes, and more.

Nils M Holm has announced that the second edition of his Sketchy LISP: An Introduction to Functional Programming in Scheme textbook is now available.

This edition includes: two new sections covering macros and quasi quotation, a quick reference, corrections, and other changes.

It has been announced that R^5.93RS, the next draft of the Revised⁶ Report on the Algorithmic Language Scheme, will be delayed until May 22, 2007.

The 2007 Workshop on Scheme and Functional Programming has put out a call for papers. The aim of the workshop is to "discuss experience with and future developments of the Scheme programming language, as well as general aspects of computer science loosely centered on the general theme of Scheme."

The submission deadline is June 22, 2007. The workshop will be held on September 30, 2007 in Freiburg, Germany.

Gauche 0.8.10 has been released. Gauche is an R5RS Scheme implementation.

This release includes: stricter keyword argument checking, support for remote process execution, support for 16-bit floating point numbers, inexact arithmetic operations, and other changes.

It has been announced that the next meeting of the Montreal Scheme/Lisp User Group will be held on April 19, 2007. Dominique Boucher will be discussing Erlang.

It has been announced that Scheme Request for Implementation 92: "ALAMBDA and ALAMBDA*", by Joo ChurlSoo, has entered 'withdrawn' status.

Gambit-C 4.0 beta 22 has been released. Gambit-C includes a Scheme interpreter, and a Scheme compiler that emits portable C code.

This release includes: better code generation for the "case" construct, an update of the syntax-case implementation, improved checking for interrupts and stack overflows, plus other changes and bug fixes.

Scheme 9 from Empty Space has been announced. It aims to be an R5RS Scheme interpreter.

Scheme 48 1.6 has been released. Scheme 48 is an implementation of Scheme based on a bytecode interpreter.

This release includes: a test suite infrastructure, plus other changes and bug fixes.

Scheme Now!, also known as Snow, has been officially launched. It is "a repository of Scheme packages that are portable to several popular implementations of Scheme."

CHICKEN 2.6 has been released. CHICKEN is a portable Scheme compiler that emits C code.

This release includes: better support for Sun's C compiler, the bundling of PCRE, support for the static linking of extensions, improved support for various SRFIs, build system improvements, plus other changes and bug fixes.

SISC 1.16.6 has been released. SISC is a R5RS Scheme interpreter implemented in Java.

This release includes a number of bug fixes.

MIT/GNU Scheme 20070205 has been released. MIT/GNU Scheme is a multi-platform open source Scheme implementation.

This snapshot release includes support for Intel Mac OS X.

It has been announced that Scheme Request for Implementation 94: "Type-Restricted Numerical Functions", by Aubrey Jaffer, has gone into 'final' status.

It has been announced that Scheme Request for Implementation 86: "MU and NU simulating VALUES & CALL-WITH-VALUES, and their related LET-syntax", by Joo ChurlSoo, has entered 'final' status.

Kawa 1.9.1 has been released. Kawa includes a Scheme implementation written in Java.

This release includes a fix for a problem when building from source.

It has been announced that R^5.92RS (~775 KB .pdf), the second draft of the of the Revised⁶ Report on the Algorithmic Language Scheme, is now available.

Further details are available at Lambda the Ultimate.

The Revised⁶ Report on the Algorithmic Language Scheme editors have announced that the R5.92RS draft has been delayed until January 18 or 19.

Scheme 48 1.5 has been released. Scheme 48 is an implementation of Scheme based on a bytecode interpreter.

This release includes: Unicode support, support for SRFI 19, bug fixes, and other changes.