Re: Ada OO Mechanism

[Robert Dewar <robert_dewar@my-dejanews.com>]

In article <t7lneeqlzf.fsf@calumny.jyacc.com>,
  Hyman Rosen <hymie@prolifics.com> wrote:
> Could you give an example of this? I ask, because recently
Richard
> D. Riehle made a similar type of claim, and then declined to
post an
> example. I believe that many posters to this group are very
proficient
> in Ada but not as proficient in C++, so they may be mistaken
about
> what is difficult to do in C++. Posting an example allows
proficient
> C++ users to examine the apparently difficult code and offer
> alternatives.

Well obviously the case of extending an algebra that implements
symmetrical binary operators is a case more easily handled in
Ada than in C, I assume a specific example is not needed here?
But presumably you are looking for different kinds of things?

> (Note that I am not looking for arbitrary examples of where
Ada is
> better than C++. I know that Ada is better, for example, in
defining
> data storage layout that conforms to external specifications,
while
> C++ is better in providing automatic generic instantiation.)

Actually these two examples are not at all comparable. The
ability to declare data storage layout is a fundamental
functionality feature.

Automatic generic instantiation is a mechanism, which one may
or may not like. You can't really say that C++ is better in
this department if your viewpoint is that automatic generic
instantiation is a risky feature! So it is better to find
examples of fundamental functionality rather than mechanisms.

Of course the discussion about OO features is entirely
about mechanisms!


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