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Subject: Re: Rep spec for tagged type
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 <cfii07$98j$1@a1-hrz.uni-duisburg.de>
From: Daniel Wild <dan@example.com>
Date: 14 Aug 2004 19:10:09 +0930
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Date: 2004-08-14T19:10:09+09:30
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Georg Bauhaus <sb463ba@l1-hrz.uni-duisburg.de> writes:

> There may be another possibility, if the representation
> is important for some data items in the objects, but not
> for all of the object. You could create a plain record type
> "around" the data that you want in your tagged type.
> Then provide a representation clause for the plain record,
> and declare a component of the plain record type in the
> tagged type.

I thought about this, and it sort of works but not quite. If I take
this approach then I have to code all the operations on the derived
types twice. 

What I ended up doing was to leave the tagged types alone with no rep
spec, then create separate types with rep specs. Then I just convert
to/from these types when reading/writing them.

Cheers,
Daniel.