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From: Martin Krischik <martin@krischik.com>
Newsgroups: comp.lang.ada
Subject: Re: Base'Class is instance of Der1?
Date: Sat, 08 Jan 2005 13:38:59 +0100
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Date: 2005-01-08T13:38:59+01:00
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Hi R

R wrote:

> Hello.
> 
> I've got function which has a parameter of type Base'Class.
> 
> well I have 3 derived tagged records and depending of what exactly is
> the parameter I have to cast it to a proper function.

Maybe you want a view rename instead of a cast:

http://en.wikibooks.org/wiki/Programming:Ada:Subtypes#Rename_View

> How can I figure out whether or not given object is der1 or der2 or
> der3 type?

You should rename to Base'Class.

Martin
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