Racket 5.2.1

Developer: Website: License / Price: Platforms: Databases: Language: Last Updated: Category: PLT Scheme Inc | More scripts racket-lang.org LGPL - GNU Lesser General Public License  Windows / Linux / Mac OS / BSD / Solaris N/A Unknown August 7th, 2012, 07:49 GMT [view history] C: \ Programming Methods and Algorithms

It supports the creation of new programming languages through a rich, expressive syntax system.

Racket, as its predecessor PLT Scheme is a variant of Scheme.

The language supports scripting.

What's New in This Release: [ read full changelog ]

· DrRacket uses a set of composable ray-traced icons available from the new `images' library collection.
· Typed Racket's `typecheck-fail' form allows macro creators to customize the error messages that Typed Racket produces. This is especially useful when creating pattern matching macros.
· The performance of Redex's matcher has been substantially improved; depending on the model you should see improvements between 2x and 50x in the time it takes to reduce terms.
· Plots look nicer and are more correct at very small and very large scales. New features include customizable dual axis ticks and transforms (e.g., log axes, date and currency ticks, axis interval collapse and stretch), stacked histograms, and 3D vector fields. The legacy `fit' function and libfit have been removed.
· The `2htdp/universe' library's `big-bang' form supports an experimental game pad key handler.
· The `db' library now supports nested transactions and PostgreSQL arrays. Bugs involving MySQL authentication and memory corruption in the SQLite bindings have been fixed.

Via: Racket 5.2.1