MDL (programming language): Difference between revisions

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Although MDL is obsolete, some of its features have been incorporated in later versions of Lisp. Gerald Sussman went on to develop the [[Scheme (programming language)|Scheme]] language, in collaboration with [[Guy Steele]], who later wrote the specifications for [[Common Lisp]] and [[Java (programming language)|Java]]. Carl Hewitt had already published the idea for the [[PLANNER]] language before the MDL project began, but his subsequent thinking on PLANNER reflected lessons learned from building MDL. Planner concepts influenced languages such as [[Prolog]] and [[Smalltalk]]. Smalltalk and [[Simula]], in turn, influenced his future work on the [[Actor model]].

But the largest influence that MDL had was on the genre known as [[interactive fiction]]. An interactive fiction game known as [[Zork]], sometimes called Dungeon, was first written in MDL. <ref name="dyer19840506">{{Cite news|url=http://www.csd.uwo.ca/Infocom/Articles/globe84.html |title=Masters of the Game |last=Dyer |first=Richard |date=1984-05-06 |newspaper=The Boston Globe |archive-url=https://web.archive.org/web/19970607204921/http://www.csd.uwo.ca/Infocom/Articles/globe84.html |archive-date=1997-06-07 |deadurl=yes |df= }}</ref> Later, Reeve, Daniels, Galley and other members of Dynamic Modeling went on to start [[Infocom]], a company that produced many early commercial works of interactive fiction.

==Code sample<ref>Original source code for the mainframe environment , http://simh.trailing-edge.com/games/zork-mdl.zip , http://simh.trailing-edge.com/software.html , snippet shown here in wikipedia was originally downloaded from Russian mirror http://pdp-11.ru/simh_trailing-edge_com/software.html</ref>==