Re: A bunch of questions that come after "Hello world"

[wojtek@power.com.pl (Wojtek Narczynski)]

Robert A Duff <bobduff@shell01.TheWorld.com> wrote in message news:<wcc7kfe8ma7.fsf@shell01.TheWorld.com>...

> Part of the reason for these things is history.  Ada tasks were
> originally just tasks -- there were no task types.  Similar to the way
> packages are not "objects" -- there are no "package types".  This was
> around 1980 or so.  Task types were added before the 1983 standard.
> Protected types (added in Ada 95) were somewhat modeled after tasks,
> and so inherited some of the oddities.

Thanks for the explanation. I will have to keep the evolutionary
nature of Ada syntax in mind.

> Ada does not support multi-dispatch.  If you have two controlling
> operands, they both have to have the same tag.

What do you mean?

procedure( X: Type1'Class; Y: Type2'Class);

Compiles for me.

Thanks,
Wojtek