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From: CTips <ctips@bestweb.net>
Newsgroups: comp.lang.ada,comp.realtime,comp.software-eng
Subject: Re: Teaching new tricks to an old dog (C++ -->Ada)
Date: Wed, 09 Mar 2005 21:09:16 -0500
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Xref: g2news1.google.com comp.lang.ada:8991 comp.realtime:1168
 comp.software-eng:4728
Date: 2005-03-09T21:09:16-05:00
List-Id: <comp.lang.ada>

jimmaureenrogers@worldnet.att.net wrote:

> CTips wrote:
> 
>>Jim Rogers wrote:
>>
>>
>>>CTips <ctips@bestweb.net> wrote in
>>>news:112sonip5v4dca6@corp.supernews.com:
>>>If you want different scheduling policies you write them, just as
>>>in C or C++.
>>
>>Right - and then what's the advantage of the built-in features of Ada
> 
> 
>>over and
>>
> 
> 
> The advantage of the built-in features are that they are a very
> good implementation of a tasking model. You seem to have two
> standards. C is good because you can do what you want while
> Ada is bad because it does not do everything for you.

Nope, I'm not saying that. What I am saying is that:
  - the safety features of Ada can come with a significant run-time cost
  - you're going to end up escaping out of Ada for a lot of things 
(particularily in systems programming).

C doesn't have that cost. However, if you want to have similar levels of 
checking, you have to roll your own run-time checks. On the other hand, 
because you're rolling your own, the run-time checks are a lot less 
expensive.

Also, since a lot of interesting things require escaping from the core 
language and bending the rules of the language, you have two options:
   - you can write it all in assembly
   - or you can write in a language where you can reasonably expect that 
your bending of the rules won't make the compiler do something you 
didn't expect.
I'd rather use C for this purpose.