MDL

A programming language, a descendant of the language Lisp whose initial purpose was to provide high level language support for the Dynamic Modeling Group at Massachusetts Institute of Technology's (MIT) Project MAC.

Model Development Language or More Datatypes than Lisp or MIT Design Language

Wikipedia | "MDL Programming Primer" "The MDL Programming Language" "The MDL Programming Environment"

Sample of PDP-10 MDL:

 <DEFINE EXIT-TO (EXITS RMS)
         #DECL ((EXITS) EXIT (RMS) <UVECTOR [REST ROOM]>)
         <MAPF <>
               <FUNCTION (E)
                  #DECL ((E) <OR DIRECTION ROOM CEXIT NEXIT DOOR>)
                  <COND (<TYPE? .E DIRECTION>)
                        (<AND <TYPE? .E ROOM> <MEMQ .E .RMS>>
                         <MAPLEAVE T>)
                        (<AND <TYPE? .E CEXIT> <MEMQ <2 .E> .RMS>>
                         <MAPLEAVE T>)
                        (<AND <TYPE? .E DOOR>
                              <OR <MEMQ <DROOM1 .E> .RMS>
                                  <MEMQ <DROOM2 .E> .RMS>>>
                         <MAPLEAVE T>)>>
               .EXITS>>

Tags: language   gamedev   dynamic   functional  

Last modified 07 October 2024