Oberon is an actively used programming language created in 1986. Oberon is a general-purpose programming language created in 1986 by Niklaus Wirth and the latest member of the Wirthian family of ALGOL-like languages (Euler, Algol-W, Pascal, Modula, and Modula-2). Oberon was the result of a concentrated effort to increase the power of Modula-2, the direct successor of Pascal, and simultaneously to reduce its complexity. Its principal new feature is the concept of type extension of record types: It permits the construction of new data types on the basis of existing ones and to relate them, deviating from the dogma of strictly static data typing. Read more on Wikipedia...

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Example code from Wikipedia:

MODULE Rectangles;

IMPORT Figures;

   Rectangle* = POINTER TO RectangleDesc;

   RectangleDesc* = RECORD
      x, y, w, h : INTEGER;

PROCEDURE Draw* (r : Rectangle);
  (* ... *)
END Draw;

(* Other procedures here *)

PROCEDURE Handle* (f: Figure; VAR msg: Figures.Message);
      r : Rectangle;
   r := f(Rectangle);
   IF    msg IS Figures.DrawMsg THEN Draw(r)
   ELSIF msg IS Figures.MarkMsg THEN Mark(r)
   ELSIF msg IS Figures.MoveMsg THEN Move(r, msg(Figures.MoveMsg).dx, msg(Figures.MoveMsg).dy)
   ELSE  (* ignore *)
END Handle;

PROCEDURE New* (VAR r : Rectangle);
   Figures.Init(r, Handle);
END New;

END Rectangles.

Last updated June 22nd, 2020

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