Re: Variant Record Component

[Stephen Leake <Stephen.A.Leake@nasa.gov>]

John Harbaugh <john.s.harbaugh2@boeing.com> writes:

> Hi, all -
> 
> Is there a way to determine if an object of some variant record type
> contains a specific variant component, other than a trying it and
> handling a possible constraint error?  I looked for something like and
> "in" operator or suitable attribute, but found nothing.

The discriminant of a variant record tells you what components are
present, but that information is essentially hard-coded everywhere.

It sounds like you want to do introspection or something. ASIS is
good for that, but not at run time.

Perhaps if you give a higher level view of what you are trying to do,
I could be more helpful.

-- 
-- Stephe