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From: "Martin Krischik" <krischik@users.sourceforge.net>
Newsgroups: comp.lang.ada
Subject: Re: Basic Explaination of OO in Ada
Date: 18 Sep 2006 23:00:12 -0700
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richard.charts@gmail.com schrieb:

> I'm new to Ada, having to learn it for work, and I am beginning to
> understand the language, I think.

> However, coming from C (and family) and Java and other "modern"

C was invented 1973 and Ada 1983 ;-).

> languages, I can't seem to wrap my head around Ada's OO methods.  Is it
> that there is simply nothing like a class in C++ or Java?

See:

http://en.wikibooks.org/wiki/Ada_Programming/Object_Orientation


> As a learning exercise, I'm trying to convert a simple Python program
> to Ada.

Well Pythons OO is not best. I won't go into much detatil but
encapsulation virtualy does not exist.

> The basics of the program were that it took in data about a Person
> object(or Student or Advisor) and stored it into array for
> manipulation.
> At first, I kept trying to convert almost line for line to Ada.  But I
> couldn't build the classes in the same way.
> Is the correct way to think in Ada, that in a package, there is some
> record "object" and also a number of subprograms that can interact
> with/on that record?

That's about it. I allready quoted the relelvant Wikibook link - you
find a pretty good explanation there.

Martin