PLT Release Notes
Current Release: 52
Release Date: May 26, 1998.
DrScheme v52 is primarily a bug-fix release.
This note summarizes the major differences between this release
and DrScheme v51.
The Future
PLT intends to conduct a major release by the end of this year or early
next year. The changes will directly affect users of MrEd, the graphical
toolbox. Please expect deletions of features, additions, and a few
modifications. DrScheme will migrate to a graphical multi-module
environment. This change should not affect beginners or teachers.
Changes
-
DrScheme
Jr is available as a separate download. DrSchemeJr is a text-based
interface with source correlation for bugs; it uses significantly less
space than DrScheme, our graphical programming environment.
- mzc (the compiler) produces code that runs 25%-75% faster than
MzScheme-interpreted code for unit-based programs or when using the --prim
compilation flag. Significant improvements are expected in the future.
See the HISTORY files in notes/drscheme, notes/mzscheme, and
notes/mred for descriptions of other bug fixes and minor changes.
Web pages
Rice PLT is pleased to announce a new Web collection of resources for
Schemers at http://www.schemers.org/.
Submit bugs using the web interface
(encouraged) or send mail to
plt-bugs@cs.rice.edu
(discouraged).