[plt-scheme] PLT Scheme v370

From: Grant Rettke (grettke at acm.org)
Date: Tue May 22 15:55:33 EDT 2007

I second that.

On 5/22/07, YC <yinso.chen at gmail.com> wrote:
> Just downloaded it and it feels A LOT faster on Windows!  Thanks to you
> all!!! ;)
>
> yinso
>
>
> On 5/21/07, Eli Barzilay < eli at barzilay.org> wrote:
> > PLT Scheme version 370 is now available from
> >
> >    http://download.plt-scheme.org/
> >
> > Some highlights:
> >
> > * The conservative garbage collector (CGC) has been replaced with a
> >   precise garbage collector (3m) in the standard build.  For most
> >   users, this change simply amounts to "better performance in space
> >   and time".  For example, a long-running DrScheme instance typically
> >   uses much less memory than before.
> >
> >   The new memory manager also supports a new "Limit Memory..." option
> >   (in DrScheme's "Scheme" menu) to limit the memory use of a
> >   programming running inside DrScheme.
> >
> >   For those who work with C-implemented libraries and extensions, the
> >   switch to precise collection may complicate interoperability.  To a
> >   large extent, however, `(lib "foreign.ss")' works the same with both
> >   collectors.  (But note that the 3m is a moving collector, so be
> >   careful with passing Scheme objects to C.)
> >
> >   Although our pre-built binaries use the new collector, builds from
> >   source using the conservative collector are still supported.
> >
> > * For a program written with one of the the "How to Design Programs"
> >   (HtDP) languages, DrScheme saves the program with meta-information
> >   that identifies the language and records the teachpacks used by the
> >   program.  DrScheme's teachpack GUI now works only with the HtDP
> >   languages.  In other languages, use `require' to access teachpacks.
> >
> >   The meta-information is in the form of a reader extension that turns
> >   the file content into a `module'-based program, which means that
> >   teaching-language files can be loaded directly into MzScheme or used
> >   with other PLT Scheme tools.
> >
> > * The HtDP "world.ss" and "image.ss" teachpacks have been revised,
> >   including support for the creation of animated GIFs.
> >
> > * Unit-based servlets are no longer supported in the web server.  Use
> >   module-based servlets, instead.  (Servlets can be implemented using
> >   a `unit' within a `module', but the web server's API is provided
> >   through a module.)
> >
> > * A new `(lib "unit.ss")' library replaces the old one and provides a
> >   simpler and more flexible syntax.  The `(lib "unitsig.ss")' library
> >   is deprecated but still available as `(lib "unitsig200.ss")', and
> >   the old `(lib "unit.ss")' is available as `(lib " unit200.ss")'.
> >
> > Feedback Welcome,
> > --
> >           ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
> >                   http://www.barzilay.org/                 Maze is Life!
> > _________________________________________________
> >   For list-related administrative tasks:
> >   http://list.cs.brown.edu/mailman/listinfo/plt-scheme
> >
>
>
> _________________________________________________
>   For list-related administrative tasks:
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>
>


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