Re: basic basic ada question

[Maciej Sobczak <no.spam@no.spam.com>]

Dmitry A. Kazakov wrote:

> That's why it should be a class-wide constructor. You construct first a
> specific object, then its class it constructed. At this point you can
> dispatch, because the specific object is already sane. This applies only to
> the tagged types which have class views and class-wide objects. So when you
> construct either, first T is constructed and after that T'Class. If S were
> derived from T, then construction of S could look like:
> 
> 1. T's components
> 2. S's components
> 3. T (Initialize)
> 4. S (Initialize)
> 5. T'Class
>     -- here a class-wide constructor defined for T can safely dispatch to a
>     -- some primitive operation overridden by S
> 6. S'Class
> 
> [I am not sure about ordering 5 and 6]

And I am not sure why do you need 5 and 6 at all - you've already done 
the whole job in 3 and 4.
Note also that having all these points (3-6) opens wide opportunities 
for duplicated actions and other maintenance nightmares. For me 4 should 
be the last step and 5,6 should not exist at all.

And you could safely change the order for 2 and 3.

-- 
Maciej Sobczak : http://www.msobczak.com/
Programming    : http://www.msobczak.com/prog/