Object Systems
Various object systems and models have been built on top of, alongside, or into Lisp, including:
- The Common Lisp Object System, CLOS, is an integral part of ANSI Common Lisp. CLOS descended from New Flavors and CommonLOOPS. ANSI Common Lisp was the first standardized object-oriented programming language (1994, ANSI X3J13).
- ObjectLisp or Object Lisp, used by Lisp Machines Incorporated and early versions of Macintosh Common Lisp
- LOOPS (Lisp Object-Oriented Programming System) and the later CommonLOOPS
- Flavors, built at MIT, and its descendant New Flavors (developed by Symbolics).
- KR (short for Knowledge Representation), a constraints-based object system developed to aid the writing of Garnet, a GUI library for Common Lisp.
- KEE used an object system called UNITS and integrated it with an inference engine and a truth maintenance system (ATMS).
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Famous quotes containing the words object and/or systems:
“Art expresses the one, or the same by the different. Thought seeks to know unity in unity; poetry to show it by variety; that is, always by an object or symbol.”
—Ralph Waldo Emerson (1803–1882)
“What avails it that you are a Christian, if you are not purer than the heathen, if you deny yourself no more, if you are not more religious? I know of many systems of religion esteemed heathenish whose precepts fill the reader with shame, and provoke him to new endeavors, though it be to the performance of rites merely.”
—Henry David Thoreau (1817–1862)