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An approach to the DIN Kernel Lisp definition
Authors:María Victoria Cengarle  Luis Mandel  Martin Wirsing  Heiner Brand  Klaus Däßler  Thekla Schneider
Affiliation:1. Bayerisches Forschungszentrum für Wissensbasierte Systeme, Germany
2. Siemens-Nixdorf AG, Germany
Abstract:A DIN Kernel LISP Draft (DKLisp) has been developed by DIN as Reaction to Action D1 (N79), short term goal, of ISO WG16. It defines a subset language, as compatible as possible with the ANSICommon-Lisp draft, but also with theEuLisp draft. It combines the most important LISP main stream features in a single, compact, but nevertheless complete language definition, which thereby could be well suited as basis for a short term InternationalLisp Standard. Besides the functional and knowledge processing features, the expressive power of the language is well comparable with contemporary procedural languages, as e.g. C++ (of course without libraries). Important features ofDKLisp are:
  • to be a “Lisp-1,” but allowing an easy “Lisp-2” transformation;
  • to be a simple, powerful and standardized educationalLisp;
  • to omit all features, which are unclean or in heavy discussion;
  • DKLisp programs run nearly unchanged inCommon-Lisp;
  • DKLisp contains a simple object and package system;
  • DKLisp contains those data classes and control structures also common to most modernLisp and non-Lisp languages;
  • DKLisp offers a simple stream I/O;
  • DKLisp contains a clean unified hierarchical class/type system;
  • DKLisp contains the typical “Lisp-features” in an orthogonal way;
  • DKLisp allows and encourages really small but powerful implementations;
  • DKLisp comes in levels, so allowing ANSICommon-Lisp to be an extension ofDKLisp level-1.
  • The present is the second version of the proposal, namely version 1.2, with slight differences with respect to the one sent to ISO. Sources of such changes were the remarks generously sent by many readers of the previous attempt.
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