PLT Scheme An innovative programming language that builds on a rich academic and practical tradition
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programming environment language programming language programming environment virtual machine

PLT Scheme Description

An innovative programming language that builds on a rich academic and practical tradition PLT Scheme is suitable for implementation tasks ranging from scripting to application development, including GUIs, web services, etc.PLT Scheme includes the DrScheme programming environment, a virtual machine with a just-in-time compiler, tools for creating stand-alone executables, the PLT Scheme web server, extensive libraries, documentation for both beginners and experts, and more.PLT Scheme supports the development of new programming languages through a rich, expressive syntax system. Example languages include Typed Scheme, FrTime, ACL2, Lazy Scheme, and ProfessorJ - the pedagogical dialect of Java. What's New in This Release: · The unit test framework for the teaching languages provides check-member-of and check-range for checking "random functions", i.e., "functions" that may produce several different results for one and the same argument. Added a new image library, 2htdp/image. Significant changes from htdp/image: · Copying and pasting does not introduce jaggies · Equal? comparisons are more efficient · Added rotation & scaling · Got rid of pinholes (new overlay, beside, above functions based on bounding boxes) · The scheme/vector library provides common vector operations (also reprovided by scheme). · The scheme/promise library provides several new kinds of promises with alternatives execution strategies. · New port-reading utilities: in-port, port->list, file->list. · A new require-macro, path-up, for requiring a file that is higher in the directory tree.

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