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From: "Marin David Condic" <marin.condic.auntie.spam@pacemicro.com>
Newsgroups: comp.lang.ada
Subject: Re: When to use 'Class in a parameter list
Date: Tue, 24 Jul 2001 08:52:56 -0400
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O.K. I think I've got my brain straight about that - maybe the type
conversion that I thought I needed only needed to occur within the child
package in order to force a call back to its parent routine. (Resolving an
otherwise ambiguous call.)

But that still leaves me a bit confused about when I want to make a
parameter of 'Class.

MDC
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Marin David Condic
Senior Software Engineer
Pace Micro Technology Americas    www.pacemicro.com
Enabling the digital revolution
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"Vincent Marciante" <marciant_antispam@li.net> wrote in message
news:3B5CDBCA.5810@li.net...
>
> Assuming that Op is defined as a primative of Base_Type then
> a procedure
>
>    procedure Op (Base : in out Child_Type) ;
>
> automaticaly exists as a consequence of having derived
> Child_Type from Base_Type.
>
> This is the case for all derived types and has nothing
> to do with the taggedness of the types in question.