Re: Proposal: Constructors, Assignment [LONG]

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

Randy Brukardt wrote:

> No, this is illegal. There can only be one result object declared. And
> if there is one, returning anything else is illegal. So the declaration
> of Result2 and the return of Result3 are illegal.
> 
>>I am not sure, but to determine whether there is only one result, could
>>be equivalent to halting problem. So some sort of run-time support will
>>be well required to determine this. Or will it be classified as one more
>>bound error?
> 
> No, these are all compile-time checks. No run-time penalty at all.

And this?

function Make_Session (Count: Integer) return Internet_Session is
begin
   for Index in Integer'Range loop
      declare
         Result : return Internet_Session (Index);
      begin
         if HALT (x) then
            return Result;
         end if;
      end;
   end loop;
end Make_Session;

I really dislike this construction. The single possible advantage of this 
feature I see, is that maybe, it could allow results for entry points, 
maybe not.

-- 
Regards,
Dmitry A. Kazakov
www.dmitry-kazakov.de