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Racket (formerly PLT Scheme) is a programming language suitable for implementation tasks ranging from scripting to application development, including GUIs, Web services, etc. It includes the DrRacket programming environment, a virtual machine with a just-in-time compiler, tools for creating stand-alone executables, the Racket Web server, extensive libraries, documentation for both beginners and experts, and more. It supports the creation of new programming languages through a rich, expressive syntax system. Example languages include Typed Racket, ACL2, FrTime, and Lazy Racket.

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2012-02-03 10:06 Back to release list
5.2.1

Esta versión añade rendimiento mejorado de comparación de Redex, una biblioteca mejorado "conjura", más agradable buscando solares, personalizable doble eje garrapatas y transforma, histogramas apilados y 3D vector campos. Mejoras de rendimiento incluyen el uso de epoll()/kqueue(), Cruz-módulo SSE inclusión y uso de operaciones de punto flotante compilado JIT. Las cadenas literales, regexps, etc. son internados. DrRacket utiliza iconos de trazabilidad ray extensible y raqueta escrito permite personalizar el tipo de errores en las macros. "2htdp/universo" admite un controlador clave experimental game pad. La biblioteca "db" ahora soporta transacciones anidadas y arreglos de discos de PostgreSQL.
This release adds improved performance of Redex's matcher, an improved "plot" library, nicer-looking plots, customizable dual axis ticks/transforms, stacked histograms, and 3D vector fields. Performance improvements include using epoll()/kqueue(), cross-module inlining, and using SSE for JIT-compiled floating-point operations. Literal strings, regexps, etc. are interned. DrRacket uses composable ray-traced icons, and Typed Racket allows customizing type errors in macros. "2htdp/universe" supports an experimental game pad key handler. The "db" library now supports nested transactions and PostgreSQL arrays.

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