Simula Where would we be without it? Historic Fun-facts Ole-Johan - PowerPoint PPT Presentation

Oct 18, 2023 •463 likes •538 views

Simula Where would we be without it? Historic Fun-facts Ole-Johan Dahl and Kristen Nygaard SIMULA I (released 1965) Simula 67 (released 1967) Origins of Object-Oriented Programming Simu-what-now? No tool to simulate and

Simula Where would we be without it?
Historic Fun-facts  Ole-Johan Dahl and Kristen Nygaard  SIMULA I (released 1965)  Simula 67 (released 1967)  Origins of Object-Oriented Programming
Simu-what-now?  No tool to simulate and describe complex systems  Stack mechanism  in Algol etc.  Queue system more suited for simulation  SIMULA I was written as an independent Algol based language
Still not good enough  Feature extension, resulting in a general- purpose language  Redesigned traditional subprograms  Coroutines allow the subprogram to restart where it had previously stopped.  Class construct to do coroutines
Classes, good idea  Conceptualized and implemented for Simula 67  Inheritance  Encapsulation  Data abstraction  Virtual procedures
Told you so!  Impact on the industry  Smalltalk (1970s)  C++ (1980s)  Java, Ada, Prolog, C#, any OOL  Text vs. String

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