Re: Null record

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

Adrian Hoe wrote:
> Hi,
> 
> Just a silly question.
> 
> A null record can be implemented as follow:
> 
> Method 1:
> 
> type Blank is new Some_Record with null record;
> 
> Method 2:
> 
> type Blank is new Some_Record with
>     record
>        null;
>     end record;
> 
> 
> Which is the most popular form and why? I assume personal preference 
> influences the choice.

I think Method 1 was made particularily for this usage. I would say
Method 1 as Method 2 looks like incomplete code if you consider:

   procedure Do_Something_Callback (Object : T) is
   begin
      null;
   end Do_Something_Callback;

which could be automatically generated from a spec file.

-- 
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 So who am I to judge.�
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