Extension Language Kit

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Extension Language Kit (ELK) is a free Scheme implementation which is embeddable in C and C++ programs, but can also be used as a stand-alone Scheme interpreter. It is available under a custom permissive license [1] for any use, commercial or noncommercial.

Free software software licensed to preserve user freedoms

Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, not price: users—individually or in cooperation with computer programmers—are free to do what they want with their copies of a free software regardless of how much is paid to obtain the program. Computer programs are deemed free if they give users ultimate control over the software and, subsequently, over their devices.

Scheme is a programming language that supports multiple paradigms, including functional and imperative programming. It is one of the three main dialects of Lisp, alongside Common Lisp and Clojure. Unlike Common Lisp, Scheme follows a minimalist design philosophy, specifying a small standard core with powerful tools for language extension.

C (programming language) general-purpose programming language

C is a general-purpose, procedural computer programming language supporting structured programming, lexical variable scope, and recursion, while a static type system prevents unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, and has found lasting use in applications previously coded in assembly language. Such applications include operating systems, as well as various application software for computers ranging from supercomputers to embedded systems.

Elk was written by Oliver Laumann and Carsten Bormann to provide an Extension Language for the development of large C++-based systems such as the ODA document editor ISOTEXT [2] and the videoconferencing system TELES.VISION. [3] It was inspired by the Lisp interpreter in Emacs and has in turn helped inspire developers of other dynamic language interpreters such as Matz' Ruby Interpreter.

The Open Document Architecture (ODA) and interchange format is a free and open international standard document file format maintained by the ITU-T to replace all proprietary document file formats. ODA is detailed in the standards documents CCITT T.411-T.424, which is equivalent to ISO 8613.

Emacs Family of text editors

Emacsor EMACS is a family of text editors that are characterized by their extensibility. The manual for the most widely used variant, GNU Emacs, describes it as "the extensible, customizable, self-documenting, real-time display editor". Development of the first Emacs began in the mid-1970s, and work on its direct descendant, GNU Emacs, continues actively as of 2019.

Ruby is an interpreted, high-level, general-purpose programming language. It was designed and developed in the mid-1990s by Yukihiro "Matz" Matsumoto in Japan.

In 2005 Sam Hocevar became the current maintainer of the Elk scheme project, merging contributed patches and fixing known bugs.

Sam Hocevar French software and video game developer

Samuel "Sam" Hocevar is a French software and video game developer. He was the project leader of the Debian operating system from 17 April 2007 to 16 April 2008.

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References

  1. ↑ Hocevar, Sam. "COPYING". Sam Hocevar's homepage. Retrieved 28 May 2015.
  2. ↑ Jonathan Rees (1991). "Scheme implementations" . Retrieved 2009-06-11.
  3. ↑ Oliver Laumann and Carsten Bormann (1994). "Elk: The Extension Language Kit". USENIX Computing Systems. 7 (4).


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