From: Stephen Leake <Stephen.Leake@gsfc.nasa.gov>
Subject: Re: Help on arrays of tagged types
Date: 1998/01/09
Date: 1998-01-09T00:00:00+00:00 [thread overview]
Message-ID: <34B66513.11D@gsfc.nasa.gov> (raw)
In-Reply-To: 34B37A65.607798A2@catalina-inter.net
mrada wrote:
>
> Hi all,
>
> I am racking my brains trying to figure out how to have a hetergenous
> array of tagged type data. I have numerous packages all of which have
> a Data type inherited from one another. I would like to declare an
> array who components can point to different "Data" type objects.
^^^
key word; "point". Use an array of class-wide access type;
type Root_Type is abstract tagged with null record;
type Root_Access_Type is access Root_Type'class;
type Heterogenous_Array_Type is array (foo) of Root_Access_Type;
Yes, this requires allocate/deallocate; that's the price you pay for
flexibility.
If the array elements are constant, they can be staticly declared,
avoiding allocate/deallocate.
> Chris Sparks
--
- Stephe
prev parent reply other threads:[~1998-01-09 0:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-01-07 0:00 Help on arrays of tagged types mrada
1998-01-09 0:00 ` Matthew Heaney
1998-01-09 0:00 ` Matthew Heaney
1998-01-13 0:00 ` James and Jessica Bear
1998-01-13 0:00 ` Matthew Heaney
1998-01-09 0:00 ` Stephen Leake [this message]
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