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Language peer sets for PLASMA:
United States
United States/1975
Designed 1975
1970s languages
Fourth generation
High Cold War


alternate simple view
Country: United States
Designed 1975
Published: 1975

PLAnner-like System Modeled on Actors. Carl Hewitt, 1975. The first actor language. Originally called Planner-73, and implemented in MacLisp. Lisp-like syntax, but with several kinds of parentheses and brackets.

Related languages
Actors PLASMA   Evolution of
PLANNER PLASMA   Extension of
PLANNER-73 PLASMA   Renaming
PLASMA Act1   Evolution of
PLASMA PLASMA-II   Evolution of

  • Hewitt, Carl and Brian Smith (1975) Hewitt, Carl and Brian Smith "Towards a Programming Apprentice" Cambridge, MA Extract: The ACTOR Model of Computation
  • Smith Brian et al (1975) Smith Brian et al"A PLASMA Primer", AI Lab Working Paper 92, MIT Oct 1975.
  • Hewitt, Carl (1976) Hewitt, Carl "Viewing Control Structures as Patterns of Passing Messages", AI Lab Memo 410, MIT 1976. Abstract Online copy at MIT Extract: PLASMA Extract: Event diagrams Extract: Characterization of Recursion as a Pattern of Passing Messages Extract: Envelope Level Scripts
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