Re: Ada 200X

[Bill Findlay <yaldnifw@blueyonder.co.uk>]

On 2/6/03 16:04, in article bbfp40$90vu6$1@ID-175126.news.dfncis.de,
"Vinzent Hoefler" <ada.rocks@jlfencey.com> wrote:

> Hyman Rosen wrote:
> 
>> Vinzent Hoefler wrote:
>>> Yes, but who is the ancestor? You always have to look for that.
>> 
>> That's fine.
> 
> Yes, it works. :)
> 
>> I'm given to understand that Ada is meant to be
>> for the convenience of the reader, not the writer. It may be
>> more work for you to look up the ancestor, but then the reader
>> of the code will know exactly where to look for the code.
> 
> Yes, it's ok for the first time you have to write it.
> The problem sometimes is that all these view conversions should be
> changed when you make a change to the object hierarchy and insert
> another object, 

Might you not want to invoke the original parent in some cases, and in other
cases the newly-interposed parent? It seems that is an issue calling for at
least a careful review of all the types in that lineage, during which such
hand-offs should be reconsidered, rather than just taking it for granted
that the default given by 'super' is the right one.

> so that the former father is now suddenly the
> grandfather. Because in the way the view conversion works, this is
> legal, but it might be wrong. YMMV.

-- 
Bill-Findlay chez blue-yonder.co.uk ("-" => "")