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  2. RPG400-L
  3. May 2003

Re: back to: improving rpg. was: what is object oriented programming

Joe Pluta wrote:
To repeat: Information hiding is an OO concept. Period.

And to repeat, no it's not. Ada demonstrates that point. Ada included abstract data types, including data hiding, well before it became an OO language. The concept of information hiding was well known before OO became fashionable. Information hiding is a useful concept for sure (no argument there), but language-enforced information hiding is neither an essential part of OO nor exclusive to OO.

Regarding Python's method of data hiding, sure you can get around it. Just like you can get around the data hiding in C++ by coding "#define private public". Any good programmer can get around the data hiding features of any language, and so honoring the data hiding wishes of the class programmer is always a matter of programming protocol, and not a matter of OO programming language design. That is, enforcing data hiding is a project management problem, not a programming language design problem.

Cheers! Hans



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