[plt-dev] Release Announcement for v4.2.5 -- almost last version

The Scheme-implemented bytecode reader fails less often. This is used
by "mzc --decompile". The Scheme-implemented bytecode writer uses the
compact bytecode format and fails less often. This may be used in the
future for Scheme-implement bytecode processors.

On Fri, Apr 2, 2010 at 12:40 PM, Robby Findler
<robby at eecs.northwestern.edu> wrote:
> I see. Instead of "more compatible" can you instead rewrite the
> sentence to say what one might gain out that extra compatibility? If
> not, I think the equation below gives you license to just remove the
> word "more". FWIW.
>
> Robby
>
> On Fri, Apr 2, 2010 at 12:37 PM, Jay McCarthy <jay.mccarthy at gmail.com> wrote:
>> Before it was not compatible.
>>
>> Now we can't find any C-generated zos that fail the test:
>>
>> (equal? (parse c) (parse (emit (parse c))))
>>
>> But almost everything fails
>>
>> (equal? c (emit (parse c)))
>>
>> So it is more compatible than before... but we don't believe it is a
>> re-implementation.
>>
>> This matters though, because the decompiler would error on some zos or
>> give the wrong answer, but now it doesn't.
>>
>> Jay
>>
>> On Fri, Apr 2, 2010 at 12:21 PM, Robby Findler
>> <robby at eecs.northwestern.edu> wrote:
>>> What does "more compatible" mean (in bullet 5)?
>>>
>>> Robby
>>>
>>> On Fri, Apr 2, 2010 at 12:19 PM, Eli Barzilay <eli at barzilay.org> wrote:
>>>> Mail me if you have any last-minute changes.  Also, Sam: I need that
>>>> improved entry.
>>>>
>>>> ----------------------------------------------------------------------
>>>> * PLT now supports multi-core parallelism via futures.  Futures
>>>>  create tasks that run in parallel, as long as the tasks stay in
>>>>  the "fast path" of the runtime system.  For more information, see:
>>>>  http://tinyurl.com/futuresguide .
>>>>
>>>> * Our unit testing framework, schemeunit, is now included in the
>>>>  distribution.  A graphical test runner is available via
>>>>  schemeunit/gui.
>>>>
>>>> * New Russian and Ukranian translations, thanks to Sergey Semerikov.
>>>>
>>>> * The support languages for the "Programming Languages: Application
>>>>  and Interpretation" textbook by Shriram Krishnamurthi are now part
>>>>  of PLT Scheme.  In addition the PLAI GC language comes with a
>>>>  random mutator generator (to help test collectors) and an improved
>>>>  heap visualizer.
>>>>
>>>> * The Scheme-implemented bytecode reader, writer, and decompiler is
>>>>  now more compatible with the C-implemented bytecode reader and
>>>>  writer.
>>>>
>>>> * The `scheme/class' library now provides contract combinators for
>>>>  classes (`class/c') and objects (`object/c').  See the Reference
>>>>  and Guide for details.  Also, a backwards-compatible
>>>>  `object-contract' version of `object/c' has replaced the old
>>>>  `object-contract' combinator.
>>>>
>>>> *  Writing new kinds of contracts is now easier with keyword-based
>>>>   constructors (`make-contract' and `make-flat-contract'), a
>>>>   simpler set of structure properties (`prop:contract' and
>>>>   `prop:flat-contract'), and the introduction of blame objects for
>>>>   tracking contract metadata.
>>>>
>>>> * A number of improvements to Redex's typesetting facilities.
>>>>
>>>> * The language dialog now suggests using "#lang" more strongly as
>>>>  the default language.  DrScheme no longer uses the term `Module
>>>>  language'.
>>>> ----------------------------------------------------------------------
>>>> --
>>>>          ((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
>>>>
>>> _________________________________________________
>>>  For list-related administrative tasks:
>>>  http://list.cs.brown.edu/mailman/listinfo/plt-dev
>>>
>>
>>
>>
>> --
>> Jay McCarthy <jay at cs.byu.edu>
>> Assistant Professor / Brigham Young University
>> http://teammccarthy.org/jay
>>
>> "The glory of God is Intelligence" - D&C 93
>>
>



-- 
Jay McCarthy <jay at cs.byu.edu>
Assistant Professor / Brigham Young University
http://teammccarthy.org/jay

"The glory of God is Intelligence" - D&C 93