[plt-dev] Release Announcement for v4.2

   world.ss is now deprecated; its replacement (universe.ss) has a  
new interface, using strings instead of symbols and chars.


On May 25, 2009, at 10:51 PM, Eli Barzilay wrote:

> The release announcement sketch that I have so far is below.  Please
> mail me new items and/or edits.
> ----------------------------------------------------------------------
> PLT Scheme version 4.2 is now available from
>
>   http://plt-scheme.org/
>
> * New in `scheme/base': `hash-has-key?', `hash-ref!',
>                         `in-sequences', `in-cycle'
>   and in `scheme': `count', `make-list' (from `scheme/list')
>                    `const' (from `scheme/function')
>
> * New statistical profiler, core and text interface for now
>
> * Scheme-implemented editor classes
>
> * on-demand instantiation of module phases
>
> * web-server: Native continuations in serial language, soft
>   state, and typos.
>
> I'm not sure that these should have an item:
>
> * make-rename-transformer => free-identifier=? (v5.1.5.2)
>
> * free-id=? propagation through module exports; add
>   'not-free-identifier=? syntax property to disable free-id=?
>   propagation; add prop:rename-transformer and
>   prop:set-transformer; fix scheme/local so that local syntax
>   bindings are visible to later definitions (v4.1.5.3)
>
> * per-thread cpu timing
>
> [Note that mirror sites can take a while to catch up with the new
> downloads.]
>
> Feedback Welcome,
> ----------------------------------------------------------------------
> -- 
>           ((lambda (x) (x x)) (lambda (x) (x x)))          Eli  
> Barzilay:
>                   http://www.barzilay.org/                 Maze is  
> Life!
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