Unless someone objects soon, this is the final version.
----------------------------------------------------------------------
* The `scheme/flonum' and `scheme/fixnum' libraries provide flonum-
and fixnum-specific operations. In the case of flonum-specific
operations, the JIT compiler can recognize combinations of
operations (including local bindings) and improve performance by
"unboxing" intermediate results.
* The `scheme/unsafe/ops' library provides arithmetic and other
operations that are implemented without dynamic checks. Avoiding
checks can sometimes improve performance, but at the expense of
safety.
* `2htdp/universe': We have severed the connection between universe
and an image library and made a few other, minor changes. Most
programs will now have to change to require the `htdp/image'
library explicitly. For the full details, see the new Porting
World Programs section of the documentation:
http://docs.plt-scheme.org/teachpack/2htdphtdp-port.html
* The `2htdp/image' library continues to grow. In this release, it
is supported by `2htdp/universe', equality changed to be based on
how the images are drawn, cropping and curves were added, and
support for more kinds of pens were added.
* `htdp/world': The old world teachpack remains deprecated. HtDP/2e
exclusively uses the new 2htdp/universe library. For backwards
compatibility, the world teachpack will remain in the distribution
until the coming summer.
* The scheme/class library now provides `this%', which refers to the
class of the current object (i.e. `this').
* `scheme/generator' has convenient functions for infinite
generators, and for converting a generator to a sequence for
iteration.
* PLT Scheme's add-on directory can be customized by the
$PLTADDONDIR environment variable or `--addon'/`-A' command-line
flags. This controls where downloaded Planet packages and their
compiled Scribble documentation are installed.
* Additional extensions include: saving `errno' in foreign calls,
much improved `sort' speed, normalized results from
`procedure-arity', and more.
----------------------------------------------------------------------
--
((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay:
http://barzilay.org/ Maze is Life!
_________________________________________________
For list-related administrative tasks:
http://list.cs.brown.edu/mailman/listinfo/plt-dev
