Re: OO in Ada

[Preben Randhol <randhol+news@pvv.org>]

On Fri, 04 Oct 2002 02:14:44 +0000, Rick Duley wrote:
> Hi all

[...]

> Do I labour under some serious misunderstanding, do I have something 
> terribly wrong?

Afraid so, but read this:

   http://www.it.bton.ac.uk/staff/je/adacraft/part3.htm
   http://www.it.bton.ac.uk/staff/je/adacraft/ch04.htm#4.8
   http://goanna.cs.rmit.edu.au/~dale/ada/aln/14_OO.html

   more can be found here:
   http://burks.bton.ac.uk/burks/language/ada/ada95.pdf (from p 169)

> 
> 5.   One final thing (for this time anyway ;), why is it that that Ada does 
> not use the intuitive 'object.method' syntax for making calls to and object. 
>    This would mean that (in the case described in section 3) the call would 
> read
> 
> 	Pen.Draw(To_X => n, To_Y => n);
> 
> and with inheritance this would be accessible through the child package 
> declaring Thick_Pen.  While I'm okay with using the existing syntax, I feel 
> the 'object.method' syntax is more intuitive and in line with OO thinking.  
> If there are people working on Ada0x then maybe we should be putting this 
> forward for consideration.

No. Read: http://www.adapower.com/articles/class.html

Preben
-- 
Ada95 is good for you.
http://libre.act-europe.fr/Software_Matters/02-C_pitfalls.pdf