I have to admit that I have not much experience with OOP,
I only wrote some C++ programs to do an introductory class
for C programmers on C++ and OOP concepts.
For me, a good OOP example would be, for example, templates.
I coded something in C which I consider OO design, that's a
AVL tree routine, which stores arbitrary data structures addressed
by arbitrary key structures in an automatically balanced AVL tree
https://en.wikipedia.org/wiki/AVL_tree
Because C has no OO support, I had to write it as an include file,
where the types of key and nodes and the compare functions etc.
are inserted by macro variables. This is what C++ tried to solve
historically:
avoid the use of the preprocessor for such things and make for example
types as parameters of templates a feature of the language.
Regarding ASSEMBLER: with ASSEMBLER, you could do this by passing
entry points (of compare routines etc.) as part of the call of (for
example)
AVL tree insert functions, and sizes of nodes (which differ) etc. etc.
That is: I'm sure you could find a solution similar to my C solution using
HLASM and its macro language. Will it be readable? May be ...
But IMO that's not really OOP, because true OOP has parametrized types
(types within types) and templates as part of the language ...
My 2 cents ...
BTW: I don't really like C++ because of the hidden overhead and the
lack of control ... I like my C solution very much :-) ...
it works on the mainframe (and on every other platform) without
any problem and yields amazing results.
Kind regards
Bernd
Am 07.02.2018 um 06:57 schrieb Paul Raulerson:
Hi Glen - like I said, I am willing to be convinced otherwise, but I have never
seen an OOP program written in Fortran 66. Object Fortran - maybe. ;)
Care to share an example of what you are talking about? It is possible we are
not talking about the same things. In my experience, OOP requires specific
facilities in a language and run time that just are not there in straight
procedural languages.
-Paul
